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You searched for: Journal name Analytica chimica acta Remove constraint Journal name: Analytica chimica acta Subject term desorption Remove constraint Subject term: desorption
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1. Novel chip-based isoelectric focusing device for fractionation of bacteria prior to their mass spectrometry identification

Author:
Filip Duša; Jiří Šalplachta; Marie Horká; Kamila Lunerová; Kateřina Rosenbergová; Oldřich Kubíček
Source:
Analytica chimica acta 2022 v.1192 pp. 339333
ISSN:
0003-2670
Subject:
desorption; fractionation; geometry; glass; pH; polystyrenes
Abstract:
... We have developed a planar chip utilizing divergent geometry of separation channel capable of vertical free-flow electrophoresis of particles at flows of lower hundreds of microliters per minute. The divergent flow isoelectric focusing (DF-IEF) chip consists of two sheets of clear polystyrene glass which serve as a base with working channels and a top cover sealing the separation channel. Optimiza ...
DOI:
10.1016/j.aca.2021.339333

2. Desorption atmospheric pressure chemical ionization: A review

Author:
Ciara N. Pitman; William R. LaCourse
Source:
Analytica chimica acta 2020 v.1130 pp. 146-154
ISSN:
0003-2670
Subject:
atmospheric pressure; chemical species; desorption; drugs; explosives; food safety; ionization; mass spectrometry; solvents
Abstract:
... Desorption Atmospheric Pressure Chemical Ionization (DAPCI) is an ambient ionization technique for mass spectrometry (MS). DAPCI is a plasma-based ionization technique that uses inert, high-velocity gas, and solvent ions to ionize the analytes in a sample. This technique allows both volatile and non-volatile species to be analyzed and provides for more efficient and sensitive detection of low pola ...
DOI:
10.1016/j.aca.2020.05.073

3. Automated bundled hollow fiber array-liquid-phase microextraction with liquid chromatography tandem mass spectrometric analysis of perfluorinated compounds in aqueous media

Author:
Shalene Xue Lin Goh; Hian Kee Lee
Source:
Analytica chimica acta 2018 v.1019 pp. 74-83
ISSN:
0003-2670
Subject:
analytical chemistry; automation; desorption; liquid chromatography; microextraction; mixing; monitoring; perfluorononanoic acid; perfluorooctanoic acid; solvents; statistical analysis; tandem mass spectrometry; temperature
Abstract:
... An automated bundled hollow fiber array (BHF)-liquid-phase microextraction (LPME) methodology in combination with ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) has been developed for the determination of perfluorinated compounds (PFCs) in environmental aqueous matrices. Eight PFCs were considered, including perfluoroheptanoic acid, perfluorooctanoic acid, perf ...
DOI:
10.1016/j.aca.2018.03.003

4. Construction of surface charge-controlled reduced graphene oxide-loaded Fe3O4 and Pt nanohybrid for peroxidase mimic with enhanced catalytic activity

Author:
Lan Liu; Baoji Du; Changshuai Shang; Jin Wang; Erkang Wang
Source:
Analytica chimica acta 2018 v.1014 pp. 77-84
ISSN:
0003-2670
Subject:
analytical chemistry; catalytic activity; desorption; electrostatic interactions; graphene; graphene oxide; iron oxides; nanocomposites; nanohybrids; nanoparticles; pH; peroxidase; polyethyleneimine; synergism; temperature
Abstract:
... Hybrid nanomaterials with synergistic effect are highly potential for developing advanced nanozymes. Herein, we designed a nanozyme assembled by polyethylenimine (PEI)-protected reduced graphene oxide anchoring iron oxide (PRGI) and Pt nanoparticle using electrostatic interaction, PRGI/Pt nanohybrid. The different ratio of PRGI nanocomposite and Pt nanoparticle could control PRGI/Pt nanohybrid's s ...
DOI:
10.1016/j.aca.2018.01.058

5. Solid phase microextraction with poly(deep eutectic solvent) monolithic column online coupled to HPLC for determination of non-steroidal anti-inflammatory drugs

Author:
Rong Wang; Wenqing Li; Zilin Chen
Source:
Analytica chimica acta 2018 v.1018 pp. 111-118
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; analytical chemistry; aqueous solutions; chlorides; choline; desorption; high performance liquid chromatography; humans; lakes; nonsteroidal anti-inflammatory agents; pH; polymers; scanning electron microscopes; solid phase microextraction; solvents; statistical analysis
Abstract:
... Polymer monolithic column based on a green deep eutectic solvent (DES) was prepared for in-tube solid phase microextraction of non-steroidal anti-inflammatory drugs (NSAIDs) in aqueous samples. DES composed of choline chloride and itaconic acid was adopted as functional monomer to synthesize a polymeric monolith inside polydopamine-functionalized poly(ether ether ketone) (PEEK) tube. The obtained ...
DOI:
10.1016/j.aca.2018.02.024

6. A high sensitive and contaminant tolerant matrix for facile detection of membrane proteins by matrix-assisted laser desorption/ionization mass spectrometry

Author:
Sheng Wang; Chunsheng Xiao; Liyan Jiang; Ling Ling; Xuesi Chen; Xinhua Guo
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; blood serum; desorption; detergents; fluorides; humans; hydrophilicity; hydrophobicity; ionization; mass spectrometry; membrane proteins; peptides; solvents; trypsin
Abstract:
... Despite the significance of membrane proteins (MPs) in biological system is indisputable, their specific natures make them notoriously difficult to be analyzed. Particularly, the widely used Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) prefers analyses of hydrophilic cytosolic proteins and has a limited ionization efficiency towards hydrophobic MPs. Herein, a hydrophobi ...
DOI:
10.1016/j.aca.2017.11.018

7. Advanced functional materials in solid phase extraction for ICP-MS determination of trace elements and their species - A review

Author:
Man He; Lijin Huang; Bingshan Zhao; Beibei Chen; Bin Hu
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
adsorbents; adsorption; analytical chemistry; atomic absorption spectrometry; desorption; polymers; separation; solid phase extraction; surface area; trace elements
Abstract:
... For the determination of trace elements and their species in various real samples by inductively coupled plasma mass spectrometry (ICP-MS), solid phase extraction (SPE) is a commonly used sample pretreatment technique to remove complex matrix, pre-concentrate target analytes and make the samples suitable for subsequent sample introduction and measurements. The sensitivity, selectivity/anti-interfe ...
DOI:
10.1016/j.aca.2017.03.047

8. Amino-silica/graphene oxide nanocomposite coated cotton as an efficient sorbent for needle trap device

Author:
Nahid Heidari; Alireza Ghiasvand; Sana Abdolhosseini
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; analytical chemistry; cotton; desorption; detection limit; gas chromatography; nanocomposites; polluted soils; polycyclic aromatic hydrocarbons; prices; scanning electron microscopy; silica; silicon; soil sampling; sorbents; stainless steel; statistical analysis; temperature
Abstract:
... Cotton and silica are easily available and plentiful natural materials, with significant sorptive properties, which can be provided easily at low prices. In this research, a novel and effective sorbent was synthesized by covalent attachment of amino-silica/graphene oxide nanocomposite to the cotton (Cot/GO/Si) and packed into a stainless steel needle for preparation a needle trap device (NTD). The ...
DOI:
10.1016/j.aca.2017.04.031

9. Capillary microextraction of volatiles device for enhanced BTEX vapors sampling based on a phenyl modified PDMS sol-gel adsorption phase

Author:
Sigalit Gura; Anamary Tarifa; Jerome Mulloor; Michelle N. Torres; José R. Almirall
Source:
Analytica chimica acta 2018 v.1014 pp. 27-40
ISSN:
0003-2670
Subject:
BTEX (benzene, toluene, ethylbenzene, xylene); acetone; adsorption; air; analytical chemistry; benzene; cans; desorption; ethylbenzene; forensic sciences; microextraction; moieties; open space; solvents; toluene; vapors; volatile organic compounds; xylene
Abstract:
... A novel phenyl modified PDMS (PhPDMS) sol-gel adsorption phase was developed for use with the capillary microextraction of volatiles (CMV) device, and determined to provide significant enhancement in BTEX recoveries when sampling trace (ng) amounts of these volatiles at ambient conditions.The previously reported reusable PDMS-CMV device has been demonstrated to rapidly and efficiently extract targ ...
DOI:
10.1016/j.aca.2018.01.043

10. Covalent organic framework as efficient desorption/ionization matrix for direct detection of small molecules by laser desorption/ionization mass spectrometry

Author:
Dan Feng; Yan Xia
Source:
Analytica chimica acta 2018 v.1014 pp. 58-63
ISSN:
0003-2670
Subject:
amino acids; analytical chemistry; bisphenol S; desorption; fatty acids; honey; ionization; mass spectrometry; pollutants; salt tolerance; sodium chloride
Abstract:
... Covalent organic framework (COF) was explored as a novel matrix with a high desorption/ionization efficiency for direct detection of small molecules by laser desorption/ionization time-of-flight mass spectrometry (LDI-TOF MS). By using COF as an LDI MS matrix, we could detect not only biological micro molecules such as amino acids and fatty acids, but also emerging environmental pollutants like bi ...
DOI:
10.1016/j.aca.2018.02.017

11. Determination of elemental composition of metals using ambient organic mass spectrometry

Author:
Christopher Shiea; Yeou-Lih Huang; Sy-Chyi Cheng; Yi-Lun Chen; Jentaie Shiea
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
EDTA (chelating agent); aluminum; analytical chemistry; copper; desorption; elemental composition; iron; irradiation; lead; mass spectrometry; nickel; zinc
Abstract:
... Conventional inorganic mass spectrometric (MS) analysis of metals can require time-consuming and tedious sample preparation. We thus report the novel and direct characterization of metals in solid samples using an organic MS technique known as electrospray laser desorption ionization mass spectrometry (ELDI/MS). No sample pretreatment was needed, and results were rapidly obtained due to the ambien ...
DOI:
10.1016/j.aca.2017.03.009

12. Enhanced coverage of lipid analysis and imaging by matrix-assisted laser desorption/ionization mass spectrometry via a strategy with an optimized mixture of matrices

Author:
Jianing Wang; Chunyan Wang; Xianlin Han
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; brain; desorption; image analysis; ionization; mass spectrometry; mice; phospholipids
Abstract:
... In matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) analysis and imaging of lipids, comprehensive ionization of lipids simultaneously by a universal matrix is a very challenging problem. Ion suppression of readily ionizable lipids to others is common. To overcome this obstacle and enhance the coverage of MALDI MS analysis and imaging of lipids, we developed a novel strategy ...
DOI:
10.1016/j.aca.2017.09.046

13. Enhancing carbohydrate ion yield by controlling crystalline structures in matrix-assisted laser desorption/ionization mass spectrometry

Author:
Hsun Lee; Yin-Hung Lai; Yu-Meng Ou; Chien-Wei Tsao; Ya-Jin Jheng; Shu-Yun Kuo; Huan-Tsung Chang; Yi-Sheng Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; carbohydrates; crystal structure; crystallization; crystals; desorption; droplets; drying; guidelines; hydrodynamics; ionization; mass spectrometry; peptides; proteins
Abstract:
... Carbohydrate analysis is challenging due to lack of sensitive detection and efficient separation methods. Although matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) is a sensitive tool, the low ionization efficiency of carbohydrates makes mass analyses inefficient. This work systematically examines the correlation between MALDI-MS sensitivity and carbohydrate sample morpho ...
DOI:
10.1016/j.aca.2017.09.024

14. Fabrication of a polymeric composite incorporating metal-organic framework nanosheets for solid-phase microextraction of polycyclic aromatic hydrocarbons from water samples

Author:
Songbo Wei; Wei Lin; Jianqiao Xu; Ying Wang; Shuqin Liu; Fang Zhu; Yuan Liu; Gangfeng Ouyang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; coatings; composite polymers; coordination polymers; desorption; detection limit; gas chromatography-mass spectrometry; nanosheets; polycyclic aromatic hydrocarbons; scanning electron microscopes; solid phase microextraction; stainless steel
Abstract:
... In this contribution, it was discovered that even distribution of a metal-organic framework (MOF) [e.g. copper 1,4-benzenedicarboxylate (CBDC)] within polymeric matrixes (e.g. polyimide) resulted in a high-efficient coating material on the surface of a stainless steel wire (SSW). Consequently, a home-made solid phase microextraction (SPME) fiber was fabricated for fast determination of target anal ...
DOI:
10.1016/j.aca.2017.04.005

15. Hybrid monolith sorbent of polypyrrole-coated graphene oxide incorporated into a polyvinyl alcohol cryogel for extraction and enrichment of sulfonamides from water samples

Author:
Kochaporn Chullasat; Piyaluk Nurerk; Proespichaya Kanatharana; Pamornrat Kueseng; Thanyaporn Sukchuay; Opas Bunkoed
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
adsorption; analytical chemistry; desorption; detection limit; graphene oxide; hydrogen bonding; hydrophobic bonding; ionic strength; pH; polymerization; polyvinyl alcohol; porosity; solid phase extraction; sulfadiazine; sulfadimethoxine; sulfamerazine; sulfamonomethoxine; sulfathiazole
Abstract:
... A hybrid monolith sorbent of polypyrrole-coated graphene oxide embedded in polyvinyl alcohol cryogel was prepared and used as an effective solid phase extraction sorbent for the determination of trace sulfonamides. The large surface areas with many adsorption sites of polypyrrole and graphene oxide facilitated the high adsorption of sulfonamides via hydrogen bonding, π-π and hydrophobic interactio ...
DOI:
10.1016/j.aca.2017.01.052

16. Matrix-assisted laser desorption/ionization mass spectrometric imaging for the rapid segmental analysis of methamphetamine in a single hair using umbelliferone as a matrix

Author:
Hang Wang; Ying Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; blood; desorption; detection limit; drug abuse; drugs; forensic sciences; hairs; high performance liquid chromatography; hydrophobicity; image analysis; ionization; mass spectrometry; medicine; stainless steel; umbelliferones; urine
Abstract:
... Segmental hair analysis offers a longer period for retrospective drug detection than blood or urine. Hair is a keratinous fiber and is strongly hydrophobic. The embedding of drugs in hydrophobic hair at low concentrations makes it difficult for extraction and detection with matrix-assisted laser desorption/ionization (MALDI) coupled with mass spectrometric imaging (MSI). In this study, a single sc ...
DOI:
10.1016/j.aca.2017.04.012

17. Sialic acid linkage-specific permethylation for improved profiling of protein glycosylation by MALDI-TOF MS

Author:
Kuan Jiang; He Zhu; Lei Li; Yuxi Guo; Ebtesam Gashash; Cheng Ma; Xiaolin Sun; Jing Li; Lianwen Zhang; Peng George Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; biomarkers; biopharmaceuticals; blood proteins; blood serum; derivatization; desorption; detection limit; glycomics; glycosylation; humans; ionization; matrix-assisted laser desorption-ionization mass spectrometry; patients; polysaccharides; rheumatoid arthritis; sialic acids
Abstract:
... Protein glycosylation mediates a wide range of cellular processes, affecting development and disease in mammals. Deciphering the “glycocodes” requires rapid, sensitive and in-depth characterization of diverse glycan structures derived from biological samples. In this study, we described a two-step derivatization strategy termed linkage-specific sialic acid permethylation (SSAP) consisting of dimet ...
DOI:
10.1016/j.aca.2017.05.029
PubMed:
28693729
PubMed Central:
PMC5953179

18. The composition of liquid atmospheric pressure matrix-assisted laser desorption/ionization matrices and its effect on ionization in mass spectrometry

Author:
Pavel Ryumin; Rainer Cramer
Source:
Analytica chimica acta 2018 v.1013 pp. 43-53
ISSN:
0003-2670
Subject:
2,5-dihydroxybenzoic acid; analytical chemistry; atmospheric pressure; desorption; energy; ethylene glycol; ionization; ions; liquids; mass spectrometry; peptides; propylene glycol; proteins; surface tension
Abstract:
... New liquid atmospheric pressure (AP) matrix-assisted laser desorption/ionization (MALDI) matrices that produce predominantly multiply charged ions have been developed and evaluated with respect to their performance for peptide and protein analysis by mass spectrometry (MS). Both the chromophore and the viscous support liquid in these matrices were optimized for highest MS signal intensity, S/N val ...
DOI:
10.1016/j.aca.2018.01.070

19. A new configuration for bar adsorptive microextraction (BAμE) for the quantification of biomarkers (hexanal and heptanal) in human urine by HPLC providing an alternative for early lung cancer diagnosis

Author:
Anderson Luiz Oenning; Lucas Morés; Adriana Neves Dias; Eduardo Carasek
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
acetonitrile; aldehydes; analytical chemistry; biomarkers; biosorbents; cork; derivatization; desorption; detection limit; early diagnosis; high performance liquid chromatography; humans; lung neoplasms; microextraction; multivariate analysis; pH; urine
Abstract:
... In this paper, a remodeling of the bar adsorptive microextraction (BAμE) technique is proposed with impregnation of the derivatization reagent on the surface of the adsorptive bar containing a biosorbent material. The derivatization reagent was 2,4-dinitrophenylhydrazine (DNPH), which was adsorbed on the surface of the bar containing cork powder as the extractor phase for the determination of two ...
DOI:
10.1016/j.aca.2017.02.034

20. A new method for quasi-reagent-free biomonitoring of mercury in human urine

Author:
Maria Schlathauer; Verena Reitsam; Rudolf Schierl; Kerstin Leopold
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
ambient temperature; analytical chemistry; atomic absorption spectrometry; desorption; detection limit; environmental monitoring; fluorescence emission spectroscopy; humans; mercury; people; silica; solid phase extraction; statistical analysis; urine; vapors
Abstract:
... A novel analytical method for sampling and extraction of mercury (Hg) from human urine is presented in this work. The method is based on selective accumulation and separation of Hg from fresh urine sample onto active nanogold-coated silica material by highly efficient solid-phase extraction. After thermal desorption of Hg from the extractant, detection is performed by atomic fluorescence spectrome ...
DOI:
10.1016/j.aca.2017.02.036

21. A simple approach for the preparation of simazine molecularly imprinted nanofibers via self-polycondensation for selective solid-phase microextraction

Author:
Mohammad Saraji; Narges Mehrafza
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
ambient temperature; coatings; desorption; detection limit; gas chromatography-mass spectrometry; mixing; molecular imprinting; nanofibers; pH; salt concentration; siloxanes; simazine; solid phase microextraction; stainless steel; statistical analysis
Abstract:
... A novel molecularly imprinted sol-gel material based on polysiloxane nanofiber was introduced as a solid-phase microextraction coating on a stainless steel wire for the extraction of simazine. The nanostructured molecularly imprinted fiber was prepared by a simple single step method at room temperature, using methyltriethoxysilane as the sol-gel precursor and simazine as the template molecule. The ...
DOI:
10.1016/j.aca.2016.06.050

22. A simple desorption atmospheric pressure chemical ionization method for enhanced non-volatile sample analysis

Author:
Md Matiur Rahman; Ting Jiang; Yang Tang; Wei Xu
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; atmospheric pressure; desorption; ionization; mass spectrometry; volatile compounds
Abstract:
... In this work, a simple desorption atmospheric pressure chemical ionization (SDAPCI) source is studied and optimized for analyzing a wide variety of samples such as nonvolatile, volatile and biological samples. In this ion source, the heated mass inlet was used for sample desorption, and a solid needle was used to produce a corona discharge for ionization. The utilization of any additional gas or h ...
DOI:
10.1016/j.aca.2017.11.033

23. A tri-metal centered metal-organic framework for solid-phase microextraction of environmental contaminants with enhanced extraction efficiency

Author:
Shuqin Liu; Lijun Xie; Qingkun Hu; Huangsheng Yang; Guanrui Pan; Fang Zhu; Shenghong Yang; Gangfeng Ouyang
Source:
Analytica chimica acta 2017 v.987 pp. 38-46
ISSN:
0003-2670
Subject:
adsorbents; adsorption; aluminum; analytical chemistry; benzene; coatings; coordination polymers; desorption; pollutants; polydimethylsiloxane; sodium chloride; solid phase microextraction; temperature
Abstract:
... This study presents the preparation and the characterizations of six tri-metal centered metal-organic frameworks (tM-MOFs) as solid-phase microextraction (SPME) adsorbents. Possessing different proportions of Al, Ga and In atoms in their frameworks, the tM-MOF-based SPME coatings exhibited different extraction performance towards the organic pollutants. Extraction results showed that the M4 (Al0.5 ...
DOI:
10.1016/j.aca.2017.08.031

24. Combination of electrospray ionization, atmospheric pressure photoionization and laser desorption ionization Fourier transform ion cyclotronic resonance mass spectrometry for the investigation of complex mixtures – Application to the petroleomic analysis of bio-oils

Author:
Jasmine Hertzog; Vincent Carré; Yann Le Brech; Colin Logan Mackay; Anthony Dufour; Ondřej Mašek; Frédéric Aubriet
Source:
Analytica chimica acta 2017 v.969 pp. 26-34
ISSN:
0003-2670
Subject:
analytical chemistry; atmospheric pressure; biofuels; desorption; ionization; mass spectrometry; oxygen; polar compounds; pyrolysis
Abstract:
... The comprehensive description of complex mixtures such as bio-oils is required to understand and improve the different processes involved during biological, environmental or industrial operation. In this context, we have to consider how different ionization sources can improve a non-targeted approach. Thus, the Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) has been couple ...
DOI:
10.1016/j.aca.2017.03.022

25. Comparison of a disposable sorptive sampler with thermal desorption in a gas chromatographic inlet, or in a dedicated thermal desorber, to conventional stir bar sorptive extraction-thermal desorption for the determination of micropollutants in water

Author:
Madelien Wooding; Egmont R. Rohwer; Yvette Naudé
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; aquatic environment; cryogenics; desorption; detection limit; gas chromatography; mass spectrometry; pollutants; polydimethylsiloxane; samplers; statistical analysis; temperature
Abstract:
... The presence of micropollutants in the aquatic environment is a worldwide environmental concern. The diversity of micropollutants and the low concentration levels at which they may occur in the aquatic environment have greatly complicated the analysis and detection of these chemicals. Two sorptive extraction samplers and two thermal desorption methods for the detection of micropollutants in water ...
DOI:
10.1016/j.aca.2017.06.030

26. Design, synthesis and application of a new class of stimuli-responsive separation materials

Author:
Roshanak Sepehrifar; Reinhard I. Boysen; Basil Danylec; Yuanzhong Yang; Kei Saito; Milton T.W. Hearn
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
adsorbents; adsorption; analytical chemistry; buffers; composite polymers; desorption; heat production; high performance liquid chromatography; hydrophilicity; hydrophobicity; ionic strength; molecular weight; pH; phase transition; polyacrylic acid; proteins; silica; sodium phosphate; solvents; temperature; triazines
Abstract:
... A new class of efficient stationary phase has been investigated for use in the liquid chromatographic separation of low molecular weight analytes and high molecular weight biomolecules, based on the application of immobilised stimuli-responsive polymers (SRPs). To this end, two polymeric units, namely poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) and poly(acrylic acid) (PAA) were tethered to a ...
DOI:
10.1016/j.aca.2017.01.061

27. Development of C60-based labeling reagents for the determination of low-molecular-weight compounds by matrix assisted laser desorption ionization mass (I): Determination of amino acids in microliter biofluids

Author:
Pin Wu; Hua-Ming Xiao; Jun Ding; Qian-Yun Deng; Fang Zheng; Yu-Qi Feng
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
amino acids; analytical chemistry; blood serum; cerebrospinal fluid; correlation; derivatization; desorption; detection limit; ionization; mass spectrometry; molecular weight; urine
Abstract:
... Quantification of low molecular weight compounds (<800 Da) using matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI MS) is challenging due to the matrix signal interference at low m/z region and poor reproducibility of MS responses. In this study, a C60 labeling-MALDI MS strategy was proposed for the fast, sensitive and reliable determination of amino acids (AAs) i ...
DOI:
10.1016/j.aca.2017.01.018

28. Dielectric barrier discharges applied for soft ionization and their mechanism

Author:
Sebastian Brandt; Felix David Klute; Alexander Schütz; Joachim Franzke
Source:
Analytica chimica acta 2017 v.951 pp. 16-31
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; electric power; electrodes; food safety; forensic sciences; image analysis; ionization; mass spectrometry; monitoring
Abstract:
... Dielectric barrier discharges are used for analytical applications as dissociative source for optical emission spectrometry and for ambient-ionization techniques. In the range of ambient-ionization techniques it has attracted much attention in fields like food safety, biological analysis, mass spectrometry for reaction monitoring and imaging forensic identification. In this review some examples ar ...
DOI:
10.1016/j.aca.2016.10.037

29. Dipentaerythritol penta-/hexa-acrylate based-highly cross-linked hybrid monolithic column: Preparation and its applications for ultrahigh efficiency separation of proteins

Author:
Junqian Ma; Qian Dai; Xueyun Li; Xianghui Zhu; Teng Ma; Xiaoqiang Qiao; Shigang Shen; Xiuhua Liu
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; adsorption; amides; analytical chemistry; crosslinking; desorption; egg albumen; electrochromatography; isomers; nitrogen; phenols; protein synthesis; proteome; scanning electron microscopy; thermogravimetry
Abstract:
... In this study, multi-acrylate based dipentaerythritol penta-/hexa-acrylate (DPEPA) was exploited for fabrication of highly cross-linked hybrid monolithic column by copolymerization with polyhedral oligomeric silsesquioxane methacryl substituted (POSS-MA) via a “one-pot” method. The new DPEPA-POSS hybrid monolithic column was respectively characterized by Fourier transform infrared spectrometry, th ...
DOI:
10.1016/j.aca.2017.01.057

30. Direct synthesis of nitrogen-doped graphene on platinum wire as a new fiber coating method for the solid-phase microextraction of BXes in water samples: Comparison of headspace and cold-fiber headspace modes

Author:
Elham Memarian; Saied Saeed Hosseiny Davarani; Saeed Nojavan; Siyavash Kazemi Movahed
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
ammonia; benzene; chemical reduction; coatings; desorption; electrophoresis; gas chromatography; graphene; graphene oxide; headspace analysis; hydrazine; mixing; platinum; rain; salt content; solid phase microextraction; wastewater; xylene
Abstract:
... In this work, a new solid-phase microextraction fiber was prepared based on nitrogen-doped graphene (N-doped G). Moreover, a new strategy was proposed to solve problems dealt in direct coating of N-doped G. For this purpose, first, Graphene oxide (GO) was coated on Pt wire by electrophoretic deposition method. Then, chemical reduction of coated GO to N-doped G was accomplished by hydrazine and NH3 ...
DOI:
10.1016/j.aca.2016.06.048

31. Discrimination of bacteria by rapid sensing their metabolic volatiles using an aspiration-type ion mobility spectrometer (a-IMS) and gas chromatography-mass spectrometry GC-MS

Author:
Ileana Andreea Ratiu; Victor Bocos-Bintintan; Adrian Patrut; Victor Hugo Moll; Matthew Turner; C.L. Paul Thomas
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
Staphylococcus aureus; ionization; qualitative analysis; headspace analysis; bacteria; data collection; air; information processing; Escherichia coli; gas chromatography-mass spectrometry; electric field; microbial culture; monitoring; models; principal component analysis; detectors; electrical equipment; culture media; adsorption; ions; spectrometers; Bacillus subtilis; desorption
Abstract:
... The objective of our study was to investigate whether one may quickly and reliably discriminate different microorganism strains by direct monitoring of the headspace atmosphere above their cultures. Headspace samples above a series of in vitro bacterial cultures were directly interrogated using an aspiration type ion mobility spectrometer (a-IMS), which produced distinct profiles (“fingerprints”) ...
DOI:
10.1016/j.aca.2017.06.031

32. Fabric phase sorptive extraction: An innovative sample preparation approach applied to the analysis of specific migration from food packaging

Author:
M. Aznar; P. Alfaro; C. Nerin; A. Kabir; K.G. Furton
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
acetic acid; acetonitrile; additives; adsorbents; analytical chemistry; desorption; ethylene glycol; food packaging; mass spectrometry; nitrogen; packaging materials; polyethylene glycol; shelf life; solvents; tetrahydrofuran; ultra-performance liquid chromatography
Abstract:
... Additives added to food packaging materials can migrate to food in contact with them during storage and shelf life. A novel simple, fast and sensitive analyte extraction method based on fabric phase sorptive extraction (FPSE), followed by analysis using ultra-high performance liquid chromatography and mass spectrometry detection (UPLC-MS) was applied to the analysis of 18 common non-volatile plast ...
DOI:
10.1016/j.aca.2016.06.049

33. Facile synthesis of multifunctional attapulgite/Fe3O4/polyaniline nanocomposites for magnetic dispersive solid phase extraction of benzoylurea insecticides in environmental water samples

Author:
Xiaoling Yang; Kexin Qiao; Yiren Ye; Miyi Yang; Jing Li; Haixiang Gao; Sanbing Zhang; Wenfeng Zhou; Runhua Lu
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; analytical chemistry; aniline; correlation; desorption; detection limit; insecticides; iron; magnetite; nanocomposites; oxidants; pH; polymerization; river water; scanning electron microscopy; solid phase extraction; transmission electron microscopy
Abstract:
... In this study, the superparamagnetic attapulgite/Fe3O4/polyaniline (ATP/Fe3O4/PANI) nanocomposites were successfully synthesized by a one-pot method. Fe (III) was applied as both the oxidant for the oxidative polymerization of aniline and the single iron source of Fe3O4 formed by the redox reaction between aniline and Fe (III). The ATP/Fe3O4/PANI was used as sorbent for magnetic dispersive solid p ...
DOI:
10.1016/j.aca.2016.06.027

34. Graphene grown on stainless steel mesh as a highly efficient sorbent for sorptive microextraction of polycyclic aromatic hydrocarbons from water samples

Author:
Amirhassan Amiri; Ferial Ghaemi
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; coatings; correlation; desorption; detection limit; gas chromatography; geometry; graphene; ionic strength; ionization; microextraction; mixing; polycyclic aromatic hydrocarbons; scanning electron microscopy; sorbents; stainless steel; transmission electron microscopy
Abstract:
... In this study, graphene grown on stainless steel mesh efficiently incorporates the advanced properties of graphene in the form of an ultra-thin coating with the open geometry of the substrate, resulting in a highly sensitive and fast sorptive device capable of extracting target analytes directly from sample matrices. The synthesis of graphene on the stainless steel mesh was confirmed by scanning e ...
DOI:
10.1016/j.aca.2017.08.049

35. Identification of sink spots in two thermal desorption GC/MS systems for the analysis of polycyclic aromatic hydrocarbons

Author:
Yingjie Li; Jiping Zhu
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; gas chromatography-mass spectrometry; polycyclic aromatic hydrocarbons; vapors; volatile organic compounds
Abstract:
... Thermal desorption (TD) GC/MS has been used for the analysis of polycyclic aromatic hydrocarbons (PAHs) and other semi-volatile organic compounds. However, thermal desorption recovery of PAHs have not been well studied and the cause of PAH residues in a TD system has not been clearly understood. Our results showed that low volatility of PAHs can lead to their incomplete recovery in a TD system: fo ...
DOI:
10.1016/j.aca.2017.01.053

36. Innovative separation and preconcentration technique of coagulating homogenous dispersive micro solid phase extraction exploiting graphene oxide nanosheets

Author:
Mehri Ghazaghi; Hassan Zavvar Mousavi; Ali Morad Rashidi; Hamid Shirkhanloo; Reza Rahighi
Source:
Analytica chimica acta 2016 v.902 pp. 33-42
ISSN:
0003-2670
Subject:
adsorption; analytical chemistry; atomic absorption spectrometry; cadmium; centrifugation; chromium; coagulation; desorption; detection limit; drying; graphene oxide; humans; lead; metal ions; nanosheets; pH; river water; saliva; solid phase extraction; solvents; urine
Abstract:
... A uniquely novel, fast, and facile technique is introduced for the first time in which a scant amount of graphene oxide (GO), without modification, has been utilized in dispersive mode of solid phase extraction (SPE) for an efficient yet simple separation. The proposed method of coagulating homogenous dispersive micro solid phase extraction (CHD-µSPE) is based on coagulation of homogeneous GO solu ...
DOI:
10.1016/j.aca.2015.11.011

37. Inter-laboratory validation of a thin film microextraction technique for determination of pesticides in surface water samples

Author:
Hamed Piri-Moghadam; Emanuela Gionfriddo; Angel Rodriguez-Lafuente; Jonathan J. Grandy; Heather L. Lord; Terry Obal; Janusz Pawliszyn
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; detection limit; gas chromatography-mass spectrometry; liquid-liquid extraction; microextraction; pesticides; polydimethylsiloxane; surface water; wastes; Ontario
Abstract:
... The primary goal of the present study is the inter-laboratory evaluation of a thin film microextraction (TFME) technique to be used as an alternative approach to liquid-liquid extraction (LLE). Polydimethylsiloxane/divinylbenzene (PDMS/DVB) and PDMS/DVB-carbon mesh supported membranes were used for the extraction of 23 targeted pesticides, while a thermal desorption unit (TDU) was employed to tran ...
DOI:
10.1016/j.aca.2017.02.014

38. Introducing a new and rapid microextraction approach based on magnetic ionic liquids: Stir bar dispersive liquid microextraction

Author:
Alberto Chisvert; Juan L. Benedé; Jared L. Anderson; Stephen A. Pierson; Amparo Salvador
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
UV filters; analytical chemistry; desorption; detection limit; gas chromatography; ionic liquids; liquid-phase microextraction; magnetic fields; mass spectrometry; mixing; models; rivers; swimming pools
Abstract:
... With the aim of contributing to the development and improvement of microextraction techniques, a novel approach combining the principles and advantages of stir bar sorptive extraction (SBSE) and dispersive liquid-liquid microextraction (DLLME) is presented. This new approach, termed stir bar dispersive liquid microextraction (SBDLME), involves the addition of a magnetic ionic liquid (MIL) and a ne ...
DOI:
10.1016/j.aca.2017.06.024

39. LC coupled to ESI, MALDI and ICP MS – A multiple hyphenation for metalloproteomic studies

Author:
Kateřina Coufalíková; Iva Benešová; Tomáš Vaculovič; Viktor Kanický; Jan Preisler
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; detectors; droplets; electrospray ionization mass spectrometry; ionization; liquid chromatography; metallothionein; metals; pH; plastics; stoichiometry
Abstract:
... A new multiple detection arrangement for liquid chromatography (LC) that supplements conventional electrospray ionization (ESI) mass spectrometry (MS) detection with two complementary detection techniques, matrix-assisted laser desorption/ionization (MALDI) MS and substrate-assisted laser desorption inductively coupled plasma (SALD ICP) MS has been developed. The combination of the molecular and e ...
DOI:
10.1016/j.aca.2017.03.016

40. Magnetic headspace adsorptive extraction of chlorobenzenes prior to thermal desorption gas chromatography-mass spectrometry

Author:
Lorena Vidal; Mazaher Ahmadi; Elena Fernández; Tayyebeh Madrakian; Antonio Canals
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
cost effectiveness; desorption; detection limit; gas chromatography-mass spectrometry; graphene oxide; headspace analysis; ionic strength; iron oxides; magnetic materials; mixing; models; nanoparticles; neodymium; solid phase extraction; sorbents
Abstract:
... This study presents a new, user-friendly, cost-effective and portable headspace solid-phase extraction technique based on graphene oxide decorated with iron oxide magnetic nanoparticles as sorbent, located on one end of a small neodymium magnet. Hence, the new headspace solid-phase extraction technique has been called Magnetic Headspace Adsorptive Extraction (Mag-HSAE). In order to assess Mag-HSAE ...
DOI:
10.1016/j.aca.2017.04.002

41. Matrix-assisted ionization vacuum for protein detection, fragmentation and PTM analysis on a high resolution linear ion trap-orbitrap platform

Author:
Bingming Chen; Christopher B. Lietz; Chuanzi OuYang; Xuefei Zhong; Meng Xu; Lingjun Li
Source:
Analytica chimica acta 2016 v.916 pp. 52-59
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; hardness; ionization; ions; peptides; post-translational modification; proteins
Abstract:
... Matrix-assisted ionization vacuum (MAIV) is a novel ionization technique that generates multiply charged ions in vacuum without the use of laser ablation or high voltage. MAIV can be achieved in intermediate-vacuum and high-vacuum matrix-assisted laser desorption/ionization (MALDI) sources and electrospray ionization (ESI) sources without instrument modification. Herein, we adapt MAIV onto the MAL ...
DOI:
10.1016/j.aca.2016.02.018
PubMed:
27016438
PubMed Central:
PMC5337126

42. Metal-organic aerogel as a coating for solid-phase microextraction

Author:
Mohammad Saraji; Ali Shahvar
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
coastal soils; coatings; coordination polymers; desorption; gas chromatography; headspace analysis; ionic strength; nanoparticles; rivers; sludge; solid phase microextraction; statistical analysis; tap water; temperature
Abstract:
... An iron-based metal-organic aerogel was synthesized using metal-organic framework nanoparticles and applied as a fiber coating for solid-phase microextraction (SPME). Chemical, thermal and morphological characteristics of the material were investigated. Headspace SPME followed by gas chromatography-electron capture detection was used for the determination of chlorobenzenes in the environmental sam ...
DOI:
10.1016/j.aca.2017.04.029

43. Methodical evaluation and improvement of matrix compatible PDMS-overcoated coating for direct immersion solid phase microextraction gas chromatography (DI-SPME-GC)-based applications

Author:
Érica A. Souza-Silva; Emanuela Gionfriddo; Robert Shirey; Len Sidisky; Janusz Pawliszyn
Source:
Analytica chimica acta 2016 v.920 pp. 54-62
ISSN:
0003-2670
Subject:
analytical chemistry; anthocyanins; carbon; coatings; desorption; detection limit; drugs; fouling; gas chromatography; grape juice; hydrophobicity; longevity; pesticides; solid phase microextraction; sugar content; sugars; washing
Abstract:
... The main quest for the implementation of direct SPME to complex matrices has been the development of matrix compatible coatings that provide sufficient sensitivity towards the target analytes. In this context, we present here a thorough evaluation of PDMS-overcoated fibers suitable for simultaneous extraction of different polarities analytes, while maintaining adequate matrix compatibility. For th ...
DOI:
10.1016/j.aca.2016.03.015

44. MoS2/Ag nanohybrid: A novel matrix with synergistic effect for small molecule drugs analysis by negative-ion matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

Author:
Yaju Zhao; Guoqing Deng; Xiaohui Liu; Liang Sun; Hui Li; Quan Cheng; Kai Xi; Danke Xu
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
absorption; adsorption; amino acids; analytical chemistry; aspirin; blood serum; desorption; dispersibility; energy; fatty acids; humans; hybrids; ionization; ions; matrix-assisted laser desorption-ionization mass spectrometry; molybdenum disulfide; nanosheets; nanosilver; peptides; salt tolerance; silver; surface area; surface roughness; synergism; thermal conductivity
Abstract:
... This paper reports a facile synthesis of molybdenum disulfide nanosheets/silver nanoparticles (MoS2/Ag) hybrid and its use as an effective matrix in negative ion matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The nanohybrid exerts a strong synergistic effect, leading to high performance detection of small molecule analytes including amino acids, peptid ...
DOI:
10.1016/j.aca.2016.06.026

45. Molecularly imprinted polymer-sol-gel tablet toward micro-solid phase extraction: I. Determination of methadone in human plasma utilizing liquid chromatography–tandem mass spectrometry

Author:
Aziza El-Beqqali; Mohamed Abdel-Rehim
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
adsorption; desorption; detection limit; humans; liquid chromatography; methadone; molecular imprinting; pH; polyethylene; quality control; solvents; tandem mass spectrometry
Abstract:
... In the present work molecularly imprinted sol-gel tablet (MIP-Tablet) was prepared. The MIP-sol-gel was prepared as a thin layer on polyethylene material in a tablet form. Methadone-d9 was selected as the template and 3-(propylmethacrylate)-trimethoxysilane was used as precursor. MIP-Tablet was applied for micro-solid phase extraction (μ-SPE). The MIP-Tablet was used for the determination of metha ...
DOI:
10.1016/j.aca.2016.07.001

46. Novel approach to high-throughput determination of endocrine disruptors using recycled diatomaceous earth as a green sorbent phase for thin-film solid-phase microextraction combined with 96-well plate system

Author:
Nicolas Kirschner; Adriana Neves Dias; Dilma Budziak; Cristian Berto da Silveira; Josias Merib; Eduardo Carasek
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; beers; benzophenones; bisphenol A; camphor; desorption; detection limit; diatomaceous earth; endocrine-disrupting chemicals; pH; purification methods; sodium chloride; solid phase microextraction; solvents; sorbents
Abstract:
... A sustainable approach to TF-SPME is presented using recycled diatomaceous earth, obtained from a beer purification process, as a green sorbent phase for the determination of bisphenol A (BPA), benzophenone (BzP), triclocarban (TCC), 4-methylbenzylidene camphor (4-MBC) and 2-ethylhexyl-p-methoxycinnamate (EHMC) in environmental water samples. TF-SPME was combined with a 96-well plate system allowi ...
DOI:
10.1016/j.aca.2017.09.047

47. Novel ionic liquid matrices for qualitative and quantitative detection of carbohydrates by matrix assisted laser desorption/ionization mass spectrometry

Author:
Xiaoyong Zhao; Shanshan Shen; Datong Wu; Pengfei Cai; Yuanjiang Pan
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
absorption; analytical chemistry; desorption; detection limit; fructooligosaccharides; ionic liquids; mass spectrometry; noodles; polysaccharides; quantitative analysis; rice
Abstract:
... Analysis of carbohydrates based on matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is still challenging and researchers have been devoting themselves to efficient matrices discovery. In the present study, the design, synthesis, qualitative and quantitative performance of non-derivative ionic liquid matrices (ILMs) were reported. DHB/N-methylaniline (N-MA) and DHB/N-ethylan ...
DOI:
10.1016/j.aca.2017.07.027

48. Plastic pellets sorptive extraction: Low-cost, rapid and efficient extraction of polycyclic aromatic hydrocarbons from environmental waters

Author:
Chrysanthi-Elisabeth Nika; Evangelia Yiantzi; Elefteria Psillakis
Source:
Analytica chimica acta 2016 v.922 pp. 30-36
ISSN:
0003-2670
Subject:
acetonitrile; agitation; analytical chemistry; desorption; detection limit; hydrophobicity; interphase; mass transfer; municipal wastewater; pellets; pollutants; polycyclic aromatic hydrocarbons; polyethylene; raw materials; river water; seawater; sodium chloride; solvents
Abstract:
... For the first time, plastic pellets, a low-cost and easy to reach industrial raw material, are reported as an efficient sorbent material for the laboratory extraction of polycyclic aromatic hydrocarbons (PAHs) from environmental waters. The proposed methodology, termed plastic pellets sorptive extraction (P2SE), consisted of a two-step procedure whereby target analytes were initially adsorbed onto ...
DOI:
10.1016/j.aca.2016.03.037

49. Rapid and reliable species identification of wild mushrooms by matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS)

Author:
Ryota Sugawara; Sayumi Yamada; Zhihao Tu; Akiko Sugawara; Kousuke Suzuki; Toshihiro Hoshiba; Sadao Eisaka; Akihiro Yamaguchi
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
DNA; analytical chemistry; autumn; databases; desorption; foodborne illness; fruiting bodies; genes; ionization; matrix-assisted laser desorption-ionization mass spectrometry; mushrooms; mycelium; nucleotide sequences; proteins; ribosomal RNA; sequence analysis; species identification; spores; Japan
Abstract:
... Mushrooms are a favourite natural food in many countries. However, some wild species cause food poisoning, sometimes lethal, due to misidentification caused by confusing fruiting bodies similar to those of edible species. The morphological inspection of mycelia, spores and fruiting bodies have been traditionally used for the identification of mushrooms. More recently, DNA sequencing analysis has b ...
DOI:
10.1016/j.aca.2016.05.056

50. Rapid fingerprinting of lignin by ambient ionization high resolution mass spectrometry and simplified data mining

Author:
Elizabeth A. Crawford; Stefanie Gerbig; Bernhard Spengler; Dietrich A. Volmer
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; ionization; lignin; mass spectrometry; phenol; renewable energy sources; thermal degradation
Abstract:
... Ambient ionization techniques are typically used to analyze samples in their native states with minimal or no sample pretreatment prior to mass spectrometric (MS) analysis. Desorption electrospray ionization (DESI) and direct analysis in real time (DART) were systematically investigated in this work for direct solid analysis of depolymerized lignin samples, with the goal of rapidly fingerprinting ...
DOI:
10.1016/j.aca.2017.09.012

51. Simple and accurate measurement of carbamazepine in surface water by use of porous membrane-protected micro-solid-phase extraction coupled with isotope dilution mass spectrometry

Author:
Hui Ling Teo; Lingkai Wong; Qinde Liu; Tang Lin Teo; Tong Kooi Lee; Hian Kee Lee
Source:
Analytica chimica acta 2016 v.912 pp. 49-57
ISSN:
0003-2670
Subject:
adsorption; agitation; analytical chemistry; desorption; detection limit; isotope dilution technique; isotopes; physicochemical properties; polypropylenes; solvents; statistical analysis; surface water; tandem mass spectrometry; ultrasonic treatment; uncertainty
Abstract:
... To achieve fast and accurate analysis of carbamazepine in surface water, we developed a novel porous membrane-protected micro-solid-phase extraction (μ-SPE) method, followed by liquid chromatography-isotope dilution tandem mass spectrometry (LC-IDMS/MS) analysis. The μ-SPE device (∼0.8 × 1 cm) was fabricated by heat-sealing edges of a polypropylene membrane sheet to devise a bag enclosing the sorb ...
DOI:
10.1016/j.aca.2016.01.028

52. Solid-phase reductive amination for glycomic analysis

Author:
Kuan Jiang; He Zhu; Cong Xiao; Ding Liu; Garrett Adams Edmunds; Liuqing Wen; Cheng Ma; Jing Li; Peng George Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
absorbance; adsorbents; analytical chemistry; aniline; carbon; derivatization; desorption; fluorescence; glycoproteins; high performance liquid chromatography; isotope labeling; mammals; matrix-assisted laser desorption-ionization mass spectrometry; polysaccharides
Abstract:
... Reductive amination is an indispensable method for glycomic analysis, as it tremendously facilitates glycan characterization and quantification by coupling functional tags at the reducing ends of glycans. However, traditional in-solution derivatization based approach for the preparation of reductively aminated glycans is quite tedious and time-consuming. Here, a simpler and more efficient strategy ...
DOI:
10.1016/j.aca.2017.01.049

53. A highly thermal stable solid phase microextraction fiber prepared by an inorganic binder

Author:
Hongmei Liu; Fanpeng Ran; Caihong Tao; Mengmeng Zhao; Yulong Jia; Yong Guo
Source:
Analytica chimica acta 2016 v.918 pp. 35-42
ISSN:
0003-2670
Subject:
adsorption; aluminum phosphate; analytical chemistry; benzo(a)pyrene; desorption; detection limit; durability; gas chromatography; ionic strength; polyacrylic acid; polycyclic aromatic hydrocarbons; solid phase microextraction; spraying; stainless steel; temperature; thermal stability
Abstract:
... An easy method to prepare solid phase microextraction fibers by introducing an inorganic binder was demonstrated in this study, where MoS2 was selected as the extraction phase material because of its graphite-like layered structure with large specific adsorption area and good stability, and was then adhered to a stainless steel wire by acid aluminum phosphate binder with the spraying method. The a ...
DOI:
10.1016/j.aca.2016.03.007

54. A metabolomic protocol for plant systematics by matrix-assisted laser-desorption/ionization time-of flight mass spectrometry

Author:
Madeleine Ernst; Denise B. Silva; Ricardo Silva; Marcelo Monge; João Semir; Ricardo Z.N. Vêncio; Norberto P. Lopes
Source:
Analytica chimica acta 2015 v.859 pp. 46-58
ISSN:
0003-2670
Subject:
algorithms; analytical chemistry; desorption; ionization; matrix-assisted laser desorption-ionization mass spectrometry; metabolomics; microorganisms; multivariate analysis; plant taxonomy; proteomics
Abstract:
... Matrix-assisted laser desorption/ionization time-of flight mass spectrometry (MALDI-TOF MS) has been widely used for the identification and classification of microorganisms based on their proteomic fingerprints. However, the use of MALDI-TOF MS in plant research has been very limited. In the present study, a first protocol is proposed for metabolic fingerprinting by MALDI-TOF MS using three differ ...
DOI:
10.1016/j.aca.2015.01.002

55. A novel quantitation method for phthalates in air using a combined thermal desorption/gas chromatography/mass spectrometry application

Author:
Sang-Hee Jo; Ki-Hyun Kim; Yong-Hyun Kim
Source:
Analytica chimica acta 2016 v.944 pp. 29-36
ISSN:
0003-2670
Subject:
analytical chemistry; molecular weight; quartz; dimethyl phthalate; glass fibers; mass spectrometry; air; dibutyl phthalate; boiling point; gas chromatography; desorption
Abstract:
... In this study, a novel quantitation method was developed to facilitate the simple and effective sampling and analysis of phthalates in air based on a sorbent tube-thermal desorption-gas chromatography-mass spectrometry system combination. The performance of the thermal desorption-based analysis was assessed using three different sorbent combinations [1]: quartz wool (QW) [2], glass wool (GW), and ...
DOI:
10.1016/j.aca.2016.09.037

56. A novel type of matrix for surface-assisted laser desorption–ionization mass spectrometric detection of biomolecules using metal-organic frameworks

Author:
Chien-Ping Fu; Stephen Lirio; Wan-Ling Liu; Chia-Her Lin; Hsi-Ya Huang
Source:
Analytica chimica acta 2015 v.888 pp. 103-109
ISSN:
0003-2670
Subject:
analytical chemistry; coordination polymers; desorption; ionization; nanoparticles; peptides; starch; tandem mass spectrometry
Abstract:
... A 3D metal-organic framework (MOF) nanomaterial as matrix for surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) and tandem mass spectrometry (MS/MS) was developed for the analysis of complex biomolecules. Unlike other nanoparticle matrices, this MOF nanomaterial does not need chemical modification prior to use. An exceptional signal reproducibility as well as very low backg ...
DOI:
10.1016/j.aca.2015.07.029

57. Analysis of odour compounds from scented consumer products using gas chromatography-mass spectrometry and gas chromatography-olfactometry

Author:
Jennifer Bartsch; Erik Uhde; Tunga Salthammer
Source:
Analytica chimica acta 2016 v.904 pp. 98-106
ISSN:
0003-2670
Subject:
air; allergenicity; allergens; analytical chemistry; benzyl alcohol; citronellol; desorption; emissions; eugenol; gas chromatography-mass spectrometry; humans; ingredients; limonene; linalool; nose; odor compounds; odors; smell; volatile organic compounds
Abstract:
... Scented consumer products are being bought in increasing amounts and gaining more popularity. There is, however, relatively little information available about their ingredients, emissions and allergenic potential. Frequently, a mixture of different fragrance substances and not solely an individual substance contributes to the overall desired smell. The aim of this study was to investigate the odor ...
DOI:
10.1016/j.aca.2015.11.031

58. Carbonaceous nanomaterials immobilised mixed matrix membrane microextraction for the determination of polycyclic aromatic hydrocarbons in sewage pond water samples

Author:
Nurul Hazirah Mukhtar; Hong Heng See
Source:
Analytica chimica acta 2016 v.931 pp. 57-63
ISSN:
0003-2670
Subject:
adsorbents; adsorption; analytical chemistry; carbon nanotubes; cellulose; desorption; detection limit; dipping; graphene; high performance liquid chromatography; methanol; microextraction; nanoparticles; pollutants; polycyclic aromatic hydrocarbons; polymers; sewage; solid phase extraction; statistical analysis
Abstract:
... In this study, the potential for carbonaceous nanomaterials to be used as adsorbents for the mixed matrix membrane (MMM) microextraction and preconcentration of organic pollutants was demonstrated. For this method, multiwall carbon nanotubes (MWCNT) and single layer graphene (SLG) nanoparticles were individually incorporated through dispersion in a cellulose triacetate (CTA) polymer matrix to form ...
DOI:
10.1016/j.aca.2016.04.032

59. Coumarins as new matrices for matrix-assisted laser-desorption/ionization Fourier transform ion cyclotron resonance mass spectrometric analysis of hydrophobic compounds

Author:
Hang Wang; Bona Dai; Bin Liu; Han Lu
Source:
Analytica chimica acta 2015 v.882 pp. 49-57
ISSN:
0003-2670
Subject:
2,5-dihydroxybenzoic acid; aldehydes; analytical chemistry; cholesterol; coenzyme Q10; coumarin; desorption; detection limit; hydrophobicity; ionization; lipopeptides; mass spectrometry; oleic acid; screening; sodium chloride; umbelliferones; yeasts
Abstract:
... Hydrophobic compounds with hydroxyl, aldehyde or ketone groups are generally difficult to detect using matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), because these compounds have low proton affinity and are poorly ionized by MALDI. Herein, coumarins have been used as new matrices for MALDI-MS analysis of a variety of hydrophobic compounds with low ionization efficiency, ...
DOI:
10.1016/j.aca.2015.04.050

60. Development of natural sorbent based micro-solid-phase extraction for determination of phthalate esters in milk samples

Author:
Muhammad Sajid; Chanbasha Basheer; Abdulnaser Alsharaa; Kothandaraman Narasimhan; Abdelbaset Buhmeida; Mohammed Al Qahtani; Mahmoud Shaheen Al-Ahwal
Source:
Analytica chimica acta 2016 v.924 pp. 35-44
ISSN:
0003-2670
Subject:
Moringa oleifera; analytical chemistry; cost effectiveness; desorption; detection limit; milk; phthalates; proteins; solvents; statistical analysis
Abstract:
... In the present study, a natural sorbent based micro-solid phase extraction (μ-SPE) was developed for determination of phthalate esters in milk samples. For the first time, an efficient and cost effective natural material (seed powder of Moringa oleifera) was employed as sorbent in μ-SPE. The sorbent was found to be naturally enriched with variety of functional groups and having a network of interc ...
DOI:
10.1016/j.aca.2016.04.016

61. Enhancement of ionization efficiency of mass spectrometric analysis from non-electrospray ionization friendly solvents with conventional and novel ionization techniques

Author:
Ping Jiang; Charles A. Lucy
Source:
Analytica chimica acta 2015 v.897 pp. 45-52
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; electrospray ionization mass spectrometry; hexane; ionization; isopropyl alcohol; petroleum; solvents
Abstract:
... Electrospray ionization mass spectrometry (ESI-MS) has significantly impacted the analysis of complex biological and petroleum samples. However ESI-MS has limited ionization efficiency for samples in low dielectric and low polarity solvents. Addition of a make-up solvent through a T union or electrospray solvent through continuous flow extractive desorption electrospray ionization (CF-EDESI) enabl ...
DOI:
10.1016/j.aca.2015.09.035

62. Fabric phase sorptive extraction: A new sorptive microextraction technique for the determination of non-steroidal anti-inflammatory drugs from environmental water samples

Author:
Inés Racamonde; Rosario Rodil; José Benito Quintana; Benigno José Sieira; Abuzar Kabir; Kenneth G. Furton; Rafael Cela
Source:
Analytica chimica acta 2015 v.865 pp. 22-30
ISSN:
0003-2670
Subject:
adsorbents; analytical chemistry; coatings; desorption; detection limit; diclofenac; gas chromatography-mass spectrometry; geometry; ibuprofen; ionic strength; ketoprofen; mass transfer; microextraction; monitoring; pH; pollution; river water; wastewater treatment; Spain
Abstract:
... Fabric phase sorptive extraction (FPSE) is a new, yet very promising member of the sorbent-based sorptive microextraction family. It has simultaneously improved both the extraction sensitivity and the speed of the extraction by incorporating high volume of sol–gel hybrid inorganic–organic sorbents into permeable fabric substrates. The advantages of FPSE have been investigated for the determination ...
DOI:
10.1016/j.aca.2015.01.036

63. Fabrication of graphene/Fe3O4@polythiophene nanocomposite and its application in the magnetic solid-phase extraction of polycyclic aromatic hydrocarbons from environmental water samples

Author:
Ali Mehdinia; Nader Khodaee; Ali Jabbari
Source:
Analytica chimica acta 2015 v.868 pp. 1-9
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; analytical chemistry; correlation; desorption; detection limit; energy-dispersive X-ray analysis; magnetic materials; nanocomposites; polycyclic aromatic hydrocarbons; polymerization; salt content; scanning electron microscopy; sodium chloride; solid phase extraction; solvents; toluene; transmission electron microscopy
Abstract:
... Polythiophene (PT) was used as a surface modifier of graphene/Fe3O4 (G/Fe3O4) composite to increase merit of it, and also overcome some limitations and disadvantages of using G/Fe3O4 alone as solid phase extraction (SPE) sorbent. An in-situ chemical polymerization method was employed to prepare G/Fe3O4@PT nanocomposites. Application of this newly designed material in the magnetic SPE (MSPE) of pol ...
DOI:
10.1016/j.aca.2014.12.022

64. Gold nanoparticles bridging infra-red spectroscopy and laser desorption/ionization mass spectrometry for direct analysis of over-the-counter drug and botanical medicines

Author:
Siu-Leung Chau; Ho-Wai Tang; Kwan-Ming Ng
Source:
Analytica chimica acta 2016 v.919 pp. 62-69
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; Oriental traditional medicine; acetaminophen; active ingredients; analytical chemistry; berberine; coatings; desorption; granules; herbal medicines; high performance liquid chromatography; ionization; mass spectrometry; nanogold; pellets; phytopharmaceuticals; potassium bromide
Abstract:
... With a coating of gold nanoparticles (AuNPs), over-the-counter (OTC) drugs and Chinese herbal medicine granules in KBr pellets could be analyzed by Fourier Transform Infra-red (FT-IR) spectroscopy and Surface-assisted Laser Desorption/Ionization mass spectrometry (SALDI-MS). FT-IR spectroscopy allows fast detection of major active ingredient (e.g., acetaminophen) in OTC drugs in KBr pellets. Upon ...
DOI:
10.1016/j.aca.2016.03.023

65. Growth of cedar-like Au nanoparticles coating on an etched stainless steel wire and its application for selective solid-phase microextraction

Author:
Yida Zhang; Yaoxia Yang; Yi Li; Min Zhang; Xuemei Wang; Xinzhen Du
Source:
Analytica chimica acta 2015 v.876 pp. 55-62
ISSN:
0003-2670
Subject:
analytical chemistry; aromatic hydrocarbons; atmospheric deposition; coatings; desorption; detection limit; filters; gold; high performance liquid chromatography; ionic strength; mixing; nanogold; phthalates; solid phase microextraction; stainless steel; statistical analysis; surface area; temperature
Abstract:
... A novel cedar-like Au nanoparticles (AuNPs) coating was fabricated on an etched stainless steel (SS) wire by direct chemical deposition and used as an efficient and unbreakable solid phase microextraction (SPME) fiber. The etched SS wire offers a rough surface structure for subsequent growth of AuNPs in chloroauric acid solution. As a result, the uniform cedar-like AuNPs coating with larger surfac ...
DOI:
10.1016/j.aca.2015.03.044

66. ICE Concentration Linked with Extractive Stirrer (ICECLES)

Author:
Nujud Maslamani; Erica Manandhar; Danielle K. Geremia; Brian A. Logue
Source:
Analytica chimica acta 2016 v.941 pp. 41-48
ISSN:
0003-2670
Subject:
analytical chemistry; aqueous solutions; benzaldehyde; benzyl alcohol; desorption; gas chromatography; mass spectrometry; pesticides; surface water; triazines
Abstract:
... Trace and ultra-trace analysis can be difficult to achieve, especially for polar, more volatile, and/or thermally unstable analytes. A novel technique, coined ICE Concentration Linked with Extractive Stirrer (ICECLES), may help address this problem. The implementation of ICECLES described here combines stir bar sorptive extraction (SBSE) with freeze concentration (FC), where an aqueous solution is ...
DOI:
10.1016/j.aca.2016.09.003

67. In vivo solid phase microextraction sampling of human saliva for non-invasive and on-site monitoring

Author:
Vincent Bessonneau; Ezel Boyaci; Malgorzata Maciazek-Jurczyk; Janusz Pawliszyn
Source:
Analytica chimica acta 2015 v.856 pp. 35-45
ISSN:
0003-2670
Subject:
desorption; geometry; humans; hydrophilicity; metabolomics; monitoring; multiresidue analysis; risk; saliva; solid phase microextraction; solvents; steroids
Abstract:
... On-site sample preparation is an analytical approach based on direct sampling from the system under investigation. It has the advantage of combining sampling and sample preparation into a single step, thus generally is fast, minimizes the potential sources of error and eliminates the risks for analytes instability. For such analysis solid phase microextraction in thin film geometry (TF-SPME) can p ...
DOI:
10.1016/j.aca.2014.11.029

68. Independent assessment of matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) sample preparation quality: A novel statistical approach for quality scoring

Author:
Pieter C. Kooijman; Sander J. Kok; Jos J.A.M. Weusten; Maarten Honing
Source:
Analytica chimica acta 2016 v.919 pp. 1-10
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; image analysis; ionization; mass spectrometry; polymers; statistical analysis
Abstract:
... Preparation of samples according to an optimized method is crucial for accurate determination of polymer sample characteristics by Matrix-Assisted Laser Desorption Ionization (MALDI) analysis. Sample preparation conditions such as matrix choice, cationization agent, deposition technique or even the deposition volume should be chosen to suit the sample of interest. Many sample preparation protocols ...
DOI:
10.1016/j.aca.2016.03.031

69. Investigation of the kinetic process of solid phase microextraction in complex sample

Author:
Ruifen Jiang; Jianqiao Xu; Wei Lin; Sijia Wen; Fang Zhu; Tiangang Luan; Gangfeng Ouyang
Source:
Analytica chimica acta 2015 v.900 pp. 111-116
ISSN:
0003-2670
Subject:
analytical chemistry; coatings; desorption; equations; hydrophobicity; models; polycyclic aromatic hydrocarbons; solid phase microextraction; temperature
Abstract:
... The presence of complex matrix in the aquatic system affects the environmental behavior of hydrophobic organic compounds (HOCs). In the current study, an automated solid-phase microextraction (SPME) desorption method was employed to study the effect of 2-hydroxypropyl-β-cyclodextrin (β-HPCD) on the kinetic process of 5 selected polyaromatic hydrocarbons (PAHs) desorbing from the fiber in aqueous s ...
DOI:
10.1016/j.aca.2015.09.010

70. MALDI-MS analysis of sialylated N-glycan linkage isomers using solid-phase two step derivatization method

Author:
Henghui Li; Wenjie Gao; Xiaojun Feng; Bi-Feng Liu; Xin Liu
Source:
Analytica chimica acta 2016 v.924 pp. 77-85
ISSN:
0003-2670
Subject:
derivatization; analytical chemistry; blood serum; humans; lactones; biomarkers; antibodies; drugs; ionization; pharmaceutical industry; amides; byproducts; isomers; esterification; sialic acids; patients; volunteers; mass spectrometry; desorption
Abstract:
... Sialic acids usually locate at the terminal of many glycan structures in either α(2,3) or α(2,6) linkage, playing different roles in various biological and pathological processes. Several linkage specific carboxyl derivatization methods have been reported to discriminate between α(2,3) and α(2,6)-linked sialic acids by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). Among ...
DOI:
10.1016/j.aca.2016.04.023

71. Magnetic ionic liquids as non-conventional extraction solvents for the determination of polycyclic aromatic hydrocarbons

Author:
María J. Trujillo-Rodríguez; Omprakash Nacham; Kevin D. Clark; Verónica Pino; Jared L. Anderson; Juan H. Ayala; Ana M. Afonso
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
acetone; acetonitrile; analytical chemistry; desorption; detection limit; evaporation; fluorescence; hexane; high performance liquid chromatography; hydrophobicity; ionic liquids; ionic strength; magnetic fields; magnetic materials; microextraction; polycyclic aromatic hydrocarbons; sodium chloride; sodium hydroxide; tap water; tea; wastewater
Abstract:
... This work describes the applicability of magnetic ionic liquids (MILs) in the analytical determination of a group of heavy polycyclic aromatic hydrocarbons. Three different MILs, namely, benzyltrioctylammonium bromotrichloroferrate (III) (MIL A), methoxybenzyltrioctylammonium bromotrichloroferrate (III) (MIL B), and 1,12-di(3-benzylbenzimidazolium) dodecane bis[(trifluoromethyl)sulfonyl)]imide bro ...
DOI:
10.1016/j.aca.2016.06.014

72. Matrix molecularly imprinted mesoporous sol–gel sorbent for efficient solid-phase extraction of chloramphenicol from milk

Author:
Victoria Samanidou; Maria Kehagia; Abuzar Kabir; Kenneth G. Furton
Source:
Analytica chimica acta 2016 v.914 pp. 62-74
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; catalysts; chloramphenicol; cross reaction; desorption; evaporation; hydrochloric acid; isopropyl alcohol; milk; molecular imprinting; nitrogen; polymers; porous media; scanning electron microscopy; silica; solid phase extraction; solvents
Abstract:
... Highly selective and efficient chloramphenicol imprinted sol–gel silica based inorganic polymeric sorbent (sol–gel MIP) was synthesized via matrix imprinting approach for the extraction of chloramphenicol in milk. Chloramphenicol was used as the template molecule, 3-aminopropyltriethoxysilane (3-APTES) and triethoxyphenylsilane (TEPS) as the functional precursors, tetramethyl orthosilicate (TMOS) ...
DOI:
10.1016/j.aca.2016.02.003

73. Matrix-assisted laser desorption/ionization mass spectrometry analysis of glycans with co-derivatization of asparaginyl-oligosaccharides

Author:
Wenjie Gao; Gaozhi Ou; Xiaojun Feng; Bi-Feng Liu; Houjin Zhang; Xin Liu
Source:
Analytica chimica acta 2015 v.896 pp. 102-110
ISSN:
0003-2670
Subject:
transferrin; detection limit; analytical chemistry; ovalbumin; glycosylation; ionization; proteolysis; ribonucleases; polysaccharides; mass spectrometry; glycoproteins; desorption
Abstract:
... As one of the most prevalent and complex post-translational modifications in biological systems, proteins glycosylation has drawn considerable attention in recent decades. Dissociation of the carbohydrates from glycoproteins may be the prerequisite step of glycomics experiments, which commonly performed by specific proteolysis. In this study, an alternative strategy was reported with nonspecific p ...
DOI:
10.1016/j.aca.2015.09.028

74. Pharmacokinetic study based on a matrix-assisted laser desorption/ionization quadrupole ion trap time-of-flight imaging mass microscope combined with a novel relative exposure approach: A case of octreotide in mouse target tissues

Author:
Tai Rao; Yuhao Shao; Naoki Hamada; Yanmin Li; Hui Ye; Dian Kang; Boyu Shen; Xinuo Li; Xiaoxi Yin; Zhangpei Zhu; Haofeng Li; Lin Xie; Guangji Wang; Yan Liang
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
absorption; analytical chemistry; atmospheric pressure; desorption; drugs; half life; image analysis; intestines; ionization; mass spectrometry; mice; muscles; octreotide; pharmacokinetics; somatostatin; stomach; tissues
Abstract:
... Application of imaging mass spectrometry in drug pharmacokinetics remains challenging due to its weak quantitative capability. Herein, an imaging mass microscope (iMScope), equipped with an optical microscope, an atmospheric pressure ion-source chamber for matrix-assisted laser desorption/ionization (AP-MALDI) and a hybrid quadrupole ion trap time-of-flight (QIT-TOF) analyzer, was first validated ...
DOI:
10.1016/j.aca.2016.11.056

75. Preparation of a polymeric ionic liquid-based adsorbent for stir cake sorptive extraction of preservatives in orange juices and tea drinks

Author:
Lei Chen; Xiaojia Huang
Source:
Analytica chimica acta 2016 v.916 pp. 33-41
ISSN:
0003-2670
Subject:
1-propanol; 4-hydroxybenzoic acid; adsorbents; adsorption; analytical chemistry; cinnamic acid; desorption; detection limit; high performance liquid chromatography; infrared spectroscopy; ionic liquids; ionic strength; mercury; orange juice; pH; polymerization; preservatives; scanning electron microscopy; sorbic acid; statistical analysis; tea (beverage)
Abstract:
... In this study, a new polymeric ionic liquid-based adsorbent was prepared and used as the extraction medium of stir cake sorptive extraction (SCSE) of three organic acid preservatives, namely, p-hydroxybenzoic acid, sorbic acid and cinnamic acid. The adsorbent was synthesized by the copolymerization of 1-ally-3-vinylimidazolium chloride (AV) and divinylbenzene (DVB) in the presence of a porogen sol ...
DOI:
10.1016/j.aca.2016.02.030

76. Preparation of molecularly imprinted solid-phase microextraction fiber for the selective removal and extraction of the antiviral drug abacavir in environmental and biological matrices

Author:
Zoi Terzopoulou; Myrsini Papageorgiou; George Z. Kyzas; Dimitrios N. Bikiaris; Dimitra A. Lambropoulou
Source:
Analytica chimica acta 2016 v.913 pp. 63-75
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; adsorption; antiviral agents; desorption; liquid chromatography; mass spectrometry; mixing; models; molecular imprinting; response surface methodology; salt content; scanning electron microscopy; sodium chloride; solid phase microextraction; sorption isotherms; surface water; urine; wastewater
Abstract:
... In the present study, a molecularly imprinted solid-phase microextraction fiber (MIP-SPMEf) was synthesized and applied for the selective removal and extraction of the antiviral drug, abacavir (ABA). Morphology and structure characterization of fibers were performed by scanning electron microscopy and Fourier transform infrared spectra, respectively. The effects on the adsorption behavior of the p ...
DOI:
10.1016/j.aca.2016.01.059

77. Quantitative profiling of O-glycans by electrospray ionization- and matrix-assisted laser desorption ionization-time of-flight-mass spectrometry after in-gel derivatization with isotope-coded1-phenyl-3-methyl-5-pyrazolone

Author:
Siniša Sić; Norbert M. Maier; Andreas M. Rizzi
Source:
Analytica chimica acta 2016 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; coagulation; derivatization; desorption; gel electrophoresis; gels; glycosylation; immunoglobulin A; ionic liquids; isotopes; mucins; peptides; quantitative analysis; spectroscopy
Abstract:
... The potential and benefits of isotope-coded labeling in the context of MS-based glycan profiling are evaluated focusing on the analysis of O-glycans. For this purpose, a derivatization strategy using d0/d5-1-phenyl-3-methyl-5-pyrazolone (PMP) is employed, allowing O-glycan release and derivatization to be achieved in one single step. The paper demonstrates that this release and derivatization reac ...
DOI:
10.1016/j.aca.2016.06.032

78. Rapid “one-pot” preparation of polymeric monolith via photo-initiated thiol-acrylate polymerization for capillary liquid chromatography

Author:
Jingyao Bai; Hongwei Wang; Junjie Ou; Zhongshan Liu; Yehua Shen; Hanfa Zou
Source:
Analytica chimica acta 2016 v.925 pp. 88-96
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; adsorption; analytical chemistry; desorption; ethylene glycol; liquid chromatography; mercury; nitrogen; oxygen; permeability; polymerization; proteins; solvents; tandem mass spectrometry
Abstract:
... A facile approach was exploited for fast preparation of polymer-based monoliths in UV-transparent fused-silica capillaries via “one-pot” photo-initiated thiol-acrylate polymerization reaction of dipentaerythritolpenta-/hexaacrylate (DPEPA) and 1-octadecanethiol (ODT) in the presence of porogenic solvents (1-butanol and ethylene glycol). Due to relative insensitivity of oxygen inhibition in thiol-e ...
DOI:
10.1016/j.aca.2016.04.012

79. Solid-phase microextraction of phthalate esters in water sample using different activated carbon-polymer monoliths as adsorbents

Author:
Stephen Lirio; Chung-Wei Fu; Jhih-Yun Lin; Meng-Ju Hsu; Hsi-Ya Huang
Source:
Analytica chimica acta 2016 v.927 pp. 55-63
ISSN:
0003-2670
Subject:
activated carbon; adsorbents; adsorption; analytical chemistry; desorption; heat; hydrogen bonding; hydrophobicity; microwave treatment; phthalates; polymerization; polymers; solid phase microextraction
Abstract:
... In this study, the application of different activated carbon-polymer (AC-polymer) monoliths as adsorbents for the solid-phase microextraction (SPME) of phthalate esters (PAEs) in water sample were investigated. The activated carbon (AC) was embedded in organic polymers, poly(butyl methacrylate-co-ethylene dimethacrylate) (poly(BMA-EDMA)) or poly(styrene-co-divinylbenzene) (poly(STY-DVB)), via a 5- ...
DOI:
10.1016/j.aca.2016.05.006

80. Sorptive thin film microextraction followed by direct solid state spectrofluorimetry: A simple, rapid and sensitive method for determination of carvedilol in human plasma

Author:
Shima Karimi; Zahra Talebpour; Noushin Adib
Source:
Analytica chimica acta 2016 v.924 pp. 45-52
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; detection limit; fluorescence; fluorescence emission spectroscopy; humans; microextraction; mixing; pH; patients; regression analysis; temperature
Abstract:
... A poly acrylate-ethylene glycol (PA-EG) thin film is introduced for the first time as a novel polar sorbent for sorptive extraction method coupled directly to solid-state spectrofluorimetry without the necessity of a desorption step. The structure, polarity, fluorescence property and extraction performance of the developed thin film were investigated systematically. Carvedilol was used as the mode ...
DOI:
10.1016/j.aca.2016.04.025

81. Stir bar sorptive-dispersive microextraction mediated by magnetic nanoparticles–nylon 6 composite for the extraction of hydrophilic organic compounds in aqueous media

Author:
Juan L. Benedé; Alberto Chisvert; Dimosthenis L. Giokas; Amparo Salvador
Source:
Analytica chimica acta 2016 v.926 pp. 63-71
ISSN:
0003-2670
Subject:
UV filters; analytical chemistry; analytical methods; desorption; detection limit; hydrophilicity; ionic strength; magnetic materials; microextraction; organic compounds; pH; rivers; solid phase extraction; solvents; sunscreens; swimming pools; water analysis
Abstract:
... A new and sensitive analytical method based on the recently developed approach termed stir bar-sorptive dispersive microextraction (SBSDME) using a magnetic CoFe2O4@SiO2–nylon 6 composite as sorbent material is presented for the extraction of hydrophilic organic compounds. The simultaneous determination of four hydrophilic UV filters in environmental water samples has been chosen as a model analyt ...
DOI:
10.1016/j.aca.2016.04.042

82. The detection and mapping of the spatial distribution of insect defense compounds by desorption atmospheric pressure photoionization Orbitrap mass spectrometry

Author:
Jan Rejšek; Vladimír Vrkoslav; Robert Hanus; Anu Vaikkinen; Markus Haapala; Tiina J. Kauppila; Risto Kostiainen; Josef Cvačka
Source:
Analytica chimica acta 2015 v.886 pp. 91-97
ISSN:
0003-2670
Subject:
Prorhinotermes; abdomen; abdominal cavity; aldehydes; analytical chemistry; atmospheric pressure; chemical defenses; desorption; head; insects; mass spectrometry; models; nitro compounds; roughness; scent glands; thorax; toxicity
Abstract:
... Many insects use chemicals synthesized in exocrine glands and stored in reservoirs to protect themselves. Two chemically defended insects were used as models for the development of a new rapid analytical method based on desorption atmospheric pressure photoionization-mass spectrometry (DAPPI-MS). The distribution of defensive chemicals on the insect body surface was studied. Since these chemicals ...
DOI:
10.1016/j.aca.2015.06.007

83. The preparation of high-capacity boronate affinity adsorbents by surface initiated reversible addition fragmentation chain transfer polymerization for the enrichment of ribonucleosides in serum

Author:
Chaozhan Wang; Huanhuan Xu; Yinmao Wei
Source:
Analytica chimica acta 2016 v.902 pp. 115-122
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; adenosine; adsorbents; adsorption; analytical chemistry; blood serum; calves; desorption; guanosine; high performance liquid chromatography; nitrogen; polymerization; solid phase extraction; uridine
Abstract:
... Boronate affinity adsorption is uniquely selective for cis-diol-containing molecules. The preparation and application of boronate affinity materials has attracted much attention in recent years. In this work, a high-capacity boronate affinity adsorbent was prepared by surface-initiated reversible addition–fragmentation chain transfer polymerization (SI-RAFT). Commercial aminated poly(glycidyl meth ...
DOI:
10.1016/j.aca.2015.11.013

84. Toehold-mediated nonenzymatic amplification circuit on graphene oxide fluorescence switching platform for sensitive and homogeneous microRNA detection

Author:
Ru Huang; Yuhui Liao; Xiaoming Zhou; Da Xing
Source:
Analytica chimica acta 2015 v.888 pp. 162-172
ISSN:
0003-2670
Subject:
DNA probes; adsorption; analytical chemistry; atomic force microscopy; biosensors; desorption; detection limit; fluorescence; gene overexpression; genes; graphene oxide; hybrids; image analysis; microRNA; zeta potential
Abstract:
... A novel graphene oxide (GO) fluorescence switch-based homogenous system has been developed to solve two problems that are commonly encountered in conventional GO-based biosensors. First, with the assistance of toehold-mediated nonenzymatic amplification (TMNA), the sensitivity of this system greatly surpasses that of previously described GO-based biosensors, which are always limited to the nM rang ...
DOI:
10.1016/j.aca.2015.07.041

85. Validation and modelling of a novel diffusive sampler for determining concentrations of volatile organic compounds in air

Author:
Pascual Pérez Ballesta; Emanuela Grandesso; Robert A. Field; Ana Cabrerizo
Source:
Analytica chimica acta 2016 v.908 pp. 102-112
ISSN:
0003-2670
Subject:
European Union; adsorbents; air; air quality; analytical chemistry; benzene; compliance; desorption; environmental factors; humidity; laboratory experimentation; markets; models; peroxidase; temperature; uncertainty; volatile organic compounds; wind speed
Abstract:
... A novel diffusive sampler that combines radial and axial diffusion has been developed that improves upon existing commercially available designs. The POcket Diffusive (POD) sampler has been validated under laboratory and field conditions for the measurements of VOCs in ambient air. Laboratory tests varied sampling conditions of temperature (−30–40 C), humidity (10–80%), wind velocity (0.1–4 m s−1) ...
DOI:
10.1016/j.aca.2015.12.032

86. A chitosan–polypyrrole magnetic nanocomposite as μ-sorbent for isolation of naproxen

Author:
Habib Bagheri; Ali Roostaie; Mohammad Yahya Baktash
Source:
Analytica chimica acta 2014 v.816 pp. 1-7
ISSN:
0003-2670
Subject:
analytical chemistry; chitosan; desorption; detection limit; fluorescence emission spectroscopy; humans; ionic strength; magnetite; nanocomposites; nanoparticles; pH; polymerization; scanning electron microscopy; solvents; statistical analysis; tap water; urine
Abstract:
... An extracting medium based on chitosan–polypyrrole (CS–PPy) magnetic nanocomposite was synthesized by chemical polymerization of pyrrole at the presence of chitosan magnetic nanoparticles (CS-MNPs) for micro-solid phase extraction. In this work, magnetic nanoparticles, the modified CS-MNPs and different types of CS–PPy magnetic nanocomposites were synthesized. Extraction efficiency of the CS–PPy m ...
DOI:
10.1016/j.aca.2014.01.028

87. A molecularly imprinted polymer as the sorptive phase immobilized in a rotating disk extraction device for the determination of diclofenac and mefenamic acid in wastewater

Author:
Valentina Manzo; Karla Ulisse; Inés Rodríguez; Eduardo Pereira; Pablo Richter
Source:
Analytica chimica acta 2015 v.889 pp. 130-137
ISSN:
0003-2670
Subject:
acetaminophen; derivatization; desorption; detection limit; diclofenac; diphenylamine; gas chromatography-mass spectrometry; methanol; microextraction; molecular imprinting; nonsteroidal anti-inflammatory agents; pH; polymers; scanning electron microscopy; statistical analysis; wastewater; wastewater treatment; Chile
Abstract:
... The microextraction of diclofenac and mefenamic acid from water samples was performed by using rotating disk sorptive extraction (RDSE) with molecularly imprinted polymer (MIP) as the sorptive phase. The MIP was synthesized from the monomer 1-vinylimidazol (VI) together with the cross-linker divinylbenzene (DVB) using diphenylamine as the template molecule. Scanning electron microscopy (SEM) analy ...
DOI:
10.1016/j.aca.2015.07.038

88. A new interface for coupling solid phase microextraction with liquid chromatography

Author:
Yong Chen; Leonard M. Sidisky
Source:
Analytica chimica acta 2014 v.817 pp. 23-27
ISSN:
0003-2670
Subject:
acetonitrile; analytical chemistry; desorption; detection limit; liquid chromatography; liquid-phase microextraction; polyacrylonitrile; polycyclic aromatic hydrocarbons; quantitative analysis; rotors; silica; solid phase microextraction; solvents; stainless steel
Abstract:
... A modified Rheodyne 7520 microsample injector was used as a new solid phase microextraction (SPME)–liquid chromatography (LC) interface. The modification was focused on the construction of a new sample rotor, which was built by gluing two sample rotors together. The new sample rotor was further reinforced with 3 pieces of stainless steel tubing. The enlarged central flow passage in the new sample ...
DOI:
10.1016/j.aca.2014.01.056

89. A new strategy to determine the protein mutation site using matrix-assisted laser desorption ionization in-source decay: Derivatization by ionic liquid

Author:
Mengzhe Guo; Yixing Zhai; Cheng Guo; Yaqin Liu; Daoquan Tang; Yuanjiang Pan
Source:
Analytica chimica acta 2015 v.865 pp. 31-38
ISSN:
0003-2670
Subject:
analytical chemistry; derivatization; desorption; disulfide bonds; ionic liquids; ionization; ions; matrix-assisted laser desorption-ionization mass spectrometry; mutation; peptides; post-translational modification; proteins; thiols
Abstract:
... Matrix-assisted laser desorption ionization (MALDI) time-of-flight mass spectrometry (TOF-MS) can be considered as state of the art in the field of proteins and peptides analysis. In this work, we have designed an ionic liquid derivative strategy to obtain abundant fragment ions in MALDI in-source decay (ISD) and used the analysis of angiogenin with mutation in the fortieth (K40I) as an instance. ...
DOI:
10.1016/j.aca.2015.01.047

90. A novel approach to bar adsorptive microextraction: Cork as extractor phase for determination of benzophenone, triclocarban and parabens in aqueous samples

Author:
Adriana Neves Dias; Ana Cristine da Silva; Vanessa Simão; Josias Merib; Eduardo Carasek
Source:
Analytica chimica acta 2015 v.888 pp. 59-66
ISSN:
0003-2670
Subject:
benzophenones; cork; correlation; microextraction; analytical chemistry; coatings; high performance liquid chromatography; pH; sodium chloride; solvents; ionic strength; desorption
Abstract:
... This study describes the use of cork as a new coating for bar adsorptive microextraction (BAμE) and its application in determining benzophenone, triclocarban and parabens in aqueous samples by HPLC–DAD. In this study bars with 7.5 and 15 mm of length were used. The extraction and liquid desorption steps for BAμE were optimized employing multivariate and univariate procedures. The desorption time a ...
DOI:
10.1016/j.aca.2015.07.011

91. A novel polythiophene – ionic liquid modified clay composite solid phase microextraction fiber: Preparation, characterization and application to pesticide analysis

Author:
Füsun Okçu Pelit; Levent Pelit; Tuğberk Nail Dizdaş; Can Aftafa; Hasan Ertaş; E.E. Yalçınkaya; Hayati Türkmen; F.N. Ertaş
Source:
Analytica chimica acta 2015 v.859 pp. 37-45
ISSN:
0003-2670
Subject:
adsorption; clay; desorption; detection limit; electrochemistry; fruit juices; headspace analysis; ionic liquids; mixing; montmorillonite; pH; pesticide application; pesticide residues; pesticides; polymers; scanning electron microscopy; solid phase microextraction; statistical analysis; temperature
Abstract:
... This report comprises the novel usage of polythiophene – ionic liquid modified clay surfaces for solid phase microextraction (SPME) fiber production to improve the analysis of pesticides in fruit juice samples. Montmorillonite (Mmt) clay intercalated with ionic liquids (IL) was co-deposited with polythiophene (PTh) polymer coated electrochemically on an SPME fiber. The surface of the fibers were c ...
DOI:
10.1016/j.aca.2014.12.043

92. A repeatable assembling and disassembling electrochemical aptamer cytosensor for ultrasensitive and highly selective detection of human liver cancer cells

Author:
Duanping Sun; Jing Lu; Zuanguang Chen; Yanyan Yu; Manni Mo
Source:
Analytica chimica acta 2015 v.885 pp. 166-173
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; detection limit; dielectric spectroscopy; electrochemistry; electrodes; gold; hepatoma; human cell lines; humans; liver; nanogold; neoplasm cells; oligonucleotides; peroxidase
Abstract:
... In this work, a repeatable assembling and disassembling electrochemical aptamer cytosensor was proposed for the sensitive detection of human liver hepatocellular carcinoma cells (HepG2) based on a dual recognition and signal amplification strategy. A high-affinity thiolated TLS11a aptamer, covalently attached to a gold electrode through Au–thiol interactions, was adopted to recognize and capture t ...
DOI:
10.1016/j.aca.2015.05.027

93. Aggregation-induced emission compounds as new assisted matrices for laser desorption/ionization time-of-flight mass spectrometry

Author:
Chenxi Yao; Caixia Niu; Na Na; Dacheng He; Jin Ouyang
Source:
Analytica chimica acta 2015 v.853 pp. 375-383
ISSN:
0003-2670
Subject:
absorption; amino acids; analytical chemistry; desorption; emissions; fluoroquinolones; humans; ionization; ions; matrix-assisted laser desorption-ionization mass spectrometry; metabolites; molecular weight; quantitative analysis; schiff bases; urine
Abstract:
... Here, N,N′-bis(4-hydroxylsalicylidene)-p-phenylenediamine (BSPD-OH), N,N′-bis(4-methoxylsalicylidene)-p-phenylenediamine (BSPD-OMe) and N,N′-bis(salicylidene)-p-phenylenediamine (BSPD), which belong to the same category of aggregation-induced emission (AIE) compounds based on Schiff base reactions, were synthesized and applied as new matrices in the analysis of small molecules by matrix-assisted l ...
DOI:
10.1016/j.aca.2014.09.047

94. Ambient ionisation mass spectrometry for the characterisation of polymers and polymer additives: A review

Author:
Martin R.L. Paine; Philip J. Barker; Stephen J. Blanksby
Source:
Analytica chimica acta 2014 v.808 pp. 70-82
ISSN:
0003-2670
Subject:
additives; analytical chemistry; desorption; ionization; mass spectrometry; polymers
Abstract:
... The purpose of this review is to showcase the present capabilities of ambient sampling and ionisation technologies for the analysis of polymers and polymer additives by mass spectrometry (MS) while simultaneously highlighting their advantages and limitations in a critical fashion. To qualify as an ambient ionisation technique, the method must be able to probe the surface of solid or liquid samples ...
DOI:
10.1016/j.aca.2013.10.001

95. Analysis of volatile organic compounds released from the decay of surrogate human models simulating victims of collapsed buildings by thermal desorption–comprehensive two-dimensional gas chromatography–time of flight mass spectrometry

Author:
A. Agapiou; E. Zorba; K. Mikedi; L. McGregor; C. Spiliopoulou; M. Statheropoulos
Source:
Analytica chimica acta 2015 v.883 pp. 99-108
ISSN:
0003-2670
Subject:
alcohols; aldehydes; analytical chemistry; aromatic compounds; buildings; comprehensive two-dimensional gas chromatography; computer software; death; desorption; esters; field experimentation; humans; ketones; laboratory techniques; mass spectrometry; models; nitrogen compounds; odors; pig carcasses; sulfur; volatile organic compounds
Abstract:
... Field experiments were devised to mimic the entrapment conditions under the rubble of collapsed buildings aiming to investigate the evolution of volatile organic compounds (VOCs) during the early dead body decomposition stage. Three pig carcasses were placed inside concrete tunnels of a search and rescue (SAR) operational field terrain for simulating the entrapment environment after a building col ...
DOI:
10.1016/j.aca.2015.04.024

96. Comprehensive characterization of natural organic matter by MALDI- and ESI-Fourier transform ion cyclotron resonance mass spectrometry

Author:
Dong Cao; Huogao Huang; Ming Hu; Lin Cui; Fanglan Geng; Ziyu Rao; Hongyun Niu; Yaqi Cai; Yuehui Kang
Source:
Analytica chimica acta 2015 v.866 pp. 48-58
ISSN:
0003-2670
Subject:
analytical chemistry; anions; aromatic compounds; desorption; ionization; mass spectrometry; organic matter; spectral analysis
Abstract:
... Natural organic matter (NOM) is a complex and non-uniform mixture of organic compounds which plays an important role in environmental processes. Due to the complexity, it is challenging to obtain fully detailed structural information about NOM. Although Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) has been demonstrated to be a powerful tool for providing molecular inform ...
DOI:
10.1016/j.aca.2015.01.051

97. Continuous affinity-gradient nano-stationary phase served as a column for reversed-phase electrochromatography and matrix carrier in time-of-flight mass spectrometry for protein analysis

Author:
Jen-Kuei Wu; Chung-Shi Yang; Yi-Shiuan Wu; Pen-Cheng Wang; Fan-Gang Tseng
Source:
Analytica chimica acta 2015 v.889 pp. 166-171
ISSN:
0003-2670
Subject:
DNA; analytical chemistry; carbon nanotubes; cytochrome c; desorption; electrochromatography; hydrophobicity; immunoglobulin G; ionization; lysozyme; matrix-assisted laser desorption-ionization mass spectrometry; molecular weight; peptides; solvents; ultraviolet radiation
Abstract:
... This study developed an affinity-gradient nano-stationary phase (AG-NSP) for protein analysis using nanofluidic capillary electrochromatography (nano-CEC) conjugated with matrix assisted laser desorption ionization (MALDI) time-of-flight (TOF) mass spectrometry (MS). The AG-NSP can be used for protein pre-separation in nano-CEC and as a matrix carrier for protein analysis in MALDI-TOF-MS. A hydrop ...
DOI:
10.1016/j.aca.2015.07.034

98. Coupling of solid phase microextraction with electrospray ionization ion mobility spectrometry and direct analysis of venlafaxine in human urine and plasma

Author:
Mohammad T. Jafari; Mohammad Saraji; Amir H. Ameri
Source:
Analytica chimica acta 2015 v.853 pp. 460-468
ISSN:
0003-2670
Subject:
desorption; direct contact; drugs; headspace analysis; humans; ionization; solid phase microextraction; solvents; spectroscopy; urine
Abstract:
... The capability of electrospray ionization-conventional ion mobility spectrometry (ESI–IMS) for direct analysis of the samples extracted by solid phase microextraction (SPME) was investigated and evaluated for the first time. To that end, an appropriate new desorption chamber was designed and constructed, resulting in the possibility of direct exposure of the SPME fiber to the electrospray solvent ...
DOI:
10.1016/j.aca.2014.10.054

99. Desorption electrospray ionization–mass spectrometric analysis of low vapor pressure chemical particulates collected from a surface

Author:
K.J. Ewing; D. Gibson; J. Sanghera; F. Miklos
Source:
Analytica chimica acta 2015 v.853 pp. 368-374
ISSN:
0003-2670
Subject:
analytical chemistry; desorption; detection limit; electrospray ionization mass spectrometry; ions; particulates; phosphates; silica gel; stainless steel; vapor pressure; vapors
Abstract:
... The collection of a low vapor pressure chemical simulant triethyl phosphate sorbed onto silica gel (TEP/SG) from a surface with subsequent analysis of the TEP/SG particulates using desorption electrospray ionization–mass spectrometry (DESI–MS) is described. Collection of TEP/SG particulates on a surface was accomplished using a sticky screen sampler composed of a stainless steel screen coated with ...
DOI:
10.1016/j.aca.2014.09.042

100. Direct analysis of anabolic steroids in urine using Leidenfrost phenomenon assisted thermal desorption-dielectric barrier discharge ionization mass spectrometry

Author:
Subhrakanti Saha; Mridul Kanti Mandal; Hiroshi Nonami; Kenzo Hiraoka
Source:
Analytica chimica acta 2014 v.839 pp. 1-7
ISSN:
0003-2670
Subject:
anabolic steroids; analytical chemistry; athletes; desorption; detection limit; evaporation; ionization; mass spectrometry; methylene chloride; rapid methods; screening; spectrometers; temperature; urine
Abstract:
... Rapid detection of trace level anabolic steroids in urine is highly desirable to monitor the consumption of performance enhancing anabolic steroids by athletes. The present article describes a novel strategy for identifying the trace anabolic steroids in urine using Leidenfrost phenomenon assisted thermal desorption (LPTD) coupled to dielectric barrier discharge (DBD) ionization mass spectrometry. ...
DOI:
10.1016/j.aca.2014.05.009