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You searched for: Journal name Analytica chimica acta Remove constraint Journal name: Analytica chimica acta Publication year rev 7983-2017 Remove constraint Publication year rev: 7983-2017 Source 2017 Remove constraint Source: 2017
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1. A cell surface specific two-photon fluorescent probe for monitoring intercellular transmission of hydrogen sulfide

Author:
Yu-Jia Fu; Hui-Wen Yao; Xiao-Yan Zhu; Xiao-Feng Guo; Hong Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; detection limit; fluorescence; fluorescent dyes; hydrogen sulfide; hydrophilicity; lipids; microscopy; monitoring; pH; plasma membrane; signal transduction; sodium; surfactants
Abstract:
... Hydrogen sulfide (H2S) is a new endogenously generated gasotransmitter and has implicated in many physiologies and pathologies closely related to its intracellular and intercellular signaling transduction. Although many fluorescent probes have been exploited to track and quantify H2S in living systems, none of them could be used for monitoring intercellular transmission of H2S. Herein, we develope ...
DOI:
10.1016/j.aca.2017.09.030

2. A comparative study of sample dissolution techniques and plasma-based instruments for the precise and accurate quantification of REEs in mineral matrices

Author:
Laurence Whitty-Léveillé; Keven Turgeon; Claude Bazin; Dominic Larivière
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
atomic absorption spectrometry; chemists; commercialization; digestion; instrumentation; isotopes; mass spectrometry; microwave treatment; rare earth elements; temperature; wet digestion method
Abstract:
... The recent commercialisation of inductively coupled plasma tandem mass spectrometric (ICP-MS/MS) instruments has provided analytical chemists with a new tool to properly quantify atomic composition in a variety of matrices with minimal sample preparation. In this article, we report on our assessment of the compatibility of 3 sample preparation techniques (open-vessel acid digestion, microwave dige ...
DOI:
10.1016/j.aca.2017.01.045

3. A fast and low-cost microfabrication approach for six types of thermoplastic substrates with reduced feature size and minimized bulges using sacrificial layer assisted laser engraving

Author:
Longjun Gu; Guodong Yu; Cheuk-Wing Li
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
alkanes; analytical chemistry; biochemical compounds; carbon dioxide; deformation; nanoparticles; polydimethylsiloxane; polylactic acid; polymethylmethacrylate; polystyrenes; sorption; thermoplastics
Abstract:
... Since polydimethylsiloxane (PDMS) is notorious for its severe sorption to biological compounds and even nanoparticles, thermoplastics become a promising substrate for microdevices. Although CO2 laser engraving is an efficient method for thermoplastic device fabrication, it accompanies with poor bonding issues due to severe bulging and large feature size determined by the diameter of laser beam. In ...
DOI:
10.1016/j.aca.2017.10.030

4. A global inter-laboratory study to assess acquisition modes for multi-compound confirmatory analysis of veterinary drugs using liquid chromatography coupled to triple quadrupole, time of flight and orbitrap mass spectrometry

Author:
Bjorn J.A. Berendsen; Thijs Meijer; Hans G.J. Mol; Leen van Ginkel; Michel W.F. Nielen
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
European Union; analytical chemistry; drug residues; equipment; ions; laws and regulations; liquid chromatography; liver; monitoring; muscles; tandem mass spectrometry; urine; veterinary drugs
Abstract:
... According to EU legislation a confirmatory method used for residue analysis should be able to confirm the identity of a compound beyond reasonable doubt. To provide an adequate instrumental set-up, Commission Decision 2002/657/EC introduced the concept of “identification points”. A second aspect to assure unequivocal confirmation, is the establishment of ion ratio and retention time criteria. Curr ...
DOI:
10.1016/j.aca.2017.01.046

5. 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

6. A label-free and highly sensitive strategy for uracil-DNA glycosylase activity detection based on stem-loop primer-mediated exponential amplification (SPEA)

Author:
Wenfang Du; Junjie Li; Fubing Xiao; Ruqin Yu; Jianhui Jiang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
DNA; DNA repair; analytical chemistry; biochemical pathways; detection limit; diagnostic techniques; fluorescence; genome; loop-mediated isothermal amplification; therapeutics; uracil; uracil-DNA glycosylase
Abstract:
... Uracil-DNA glycosylase (UDG) plays essential roles in base excision repair (BER) pathway by eliminating uracil from DNA to sustain the genome integrity. Sensitive detection of UDG activity is of great significance in the study of many fundamental biochemical processes and clinical applications. We develop a label-free method for UDG activity detection using stem-loop primer-mediated exponential am ...
DOI:
10.1016/j.aca.2017.08.042

7. A luminescent probe of mismatched DNA hybridization: Location and number of mismatches

Author:
Amira F. El-Yazbi; Alysha Wong; Glen R. Loppnow
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; apoptosis; calves; carcinogenesis; detection limit; energy transfer; genome; humans; ions; luminescence; mutagenesis; nucleic acid hybridization; oligonucleotides; single-stranded DNA; terbium; thymus gland; ultraviolet radiation
Abstract:
... The human genome is susceptible to change; base mismatches can arise from damaged DNA, replication errors, and spontaneous mutation, and have the potential to cause apoptosis, carcinogenesis, and mutagenesis. Many techniques have been developed for DNA mismatch detection, but many of these methods have complex, time-consuming procedures and are limited to the detection of specific types of DNA mis ...
DOI:
10.1016/j.aca.2017.09.036

8. A miniature optical emission spectrometric system in a lab-on-valve for sensitive determination of cadmium

Author:
Ya-Jie Zhang; Yi Cai; Yong-Liang Yu; Jian-Hua Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; atomization; borates; cadmium; derivatization; hydrochloric acid; spectrometers; trace elements
Abstract:
... A miniature optical emission spectrometric (OES) system is developed by incorporating dielectric barrier discharge (DBD) microplasma as excitation source in a lab-on-valve (LOV) configuration for trace cadmium analysis. The entire system integrates bead injection (BI) sample pretreatment, post-column derivatization, in-situ nebulization and OES detection. Trace cadmium in sample solution is separa ...
DOI:
10.1016/j.aca.2017.04.055

9. A new integrated TLC/MU-ATR/SERS advanced approach for the identification of trace amounts of dyes in mixtures

Author:
Giorgia Sciutto; Silvia Prati; Irene Bonacini; Lucio Litti; Moreno Meneghetti; Rocco Mazzeo
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
Fourier transform infrared spectroscopy; analytical chemistry; case studies; dyes; glass; gold; iodides; silver; thin layer chromatography; wool
Abstract:
... The present research is focused on the setting up of an advanced analytical system for the detection of synthetic dyes. The system is based on the combination of an innovative thin layer chromatography (TLC) plate coupled with enhanced infrared (MU-ATR, metal underlayer attenuated total reflection) and Surface Enhanced Raman (SERS) spectroscopy. In particular, a TLC plate made of silver iodide (Ag ...
DOI:
10.1016/j.aca.2017.08.020

10. A novel multi-hyphenated analytical method to simultaneously determine xanthine oxidase inhibitors and superoxide anion scavengers in natural products

Author:
Jin Qi; Li-Qiong Sun; Steven Y. Qian; Bo-Yang Yu
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; apigenin; bioactive properties; chemiluminescence; high performance liquid chromatography; oxidation; oxidative stress; pH; rosmarinic acid; screening; solvents; superoxide anion; temperature; uric acid; wavelengths; xanthine; xanthine oxidase
Abstract:
... Natural products, such as rosmarinic acid and apigenin, can act as xanthine oxidase inhibitors (XOIs) as well as superoxide anion scavengers, and have potential for treatment of diseases associated with high uric acid levels and oxidative stress. However, efficient simultaneous screening of these two bioactivities in natural products has been challenging. We have developed a novel method by assemb ...
DOI:
10.1016/j.aca.2017.07.023

11. A redox-modulated fluorescent strategy for the highly sensitive detection of metabolites by using graphene quantum dots

Author:
Hua Liu; Xing Li; Mengke Wang; Xueqian Chen; Xingguang Su
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; biosensors; blood serum; enzymatic reactions; fluorescence; fluorescent dyes; glucose; graphene; humans; hydrogen peroxide; iron; metabolites; monitoring; quantum dots; uric acid
Abstract:
... In this paper, a redox-modulated fluorescent strategy based on the transformation of Fe2+/Fe3+ couple and enzymatic reaction for rapid monitoring glucose and uric acid using graphene quantum dots (GQDs) as fluorescent probe was developed. Hydrogen peroxide (H2O2) can be produced by the enzymatic reaction of a series of metabolites, such as glucose and uric acid. In the presence of hydrogen peroxid ...
DOI:
10.1016/j.aca.2017.07.031

12. A review of rapid and field-portable analytical techniques for the diagnosis of cyanide exposure

Author:
Randy Jackson; Brian A. Logue
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; analytical methods; cyanides; human resources; humans; inhalation exposure; long term effects; mining; risk; smoke; synthetic fibers; toxic substances; toxicity; transportation
Abstract:
... Although commonly known as a highly toxic chemical, cyanide is also an essential reagent for many industrial processes in areas such as mining, electroplating and synthetic fiber production. The “heavy” use of cyanide in these industries, along with its necessary transportation, increases the possibility of human exposure. Another relatively common, but consistently overlooked, mode of cyanide exp ...
DOI:
10.1016/j.aca.2016.12.039

13. A review on mass spectrometry-based quantitative proteomics: targeted and data independent acquisition

Author:
Veronika Vidova; Zdenek Spacil
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; bioinformatics; biomedical research; cost effectiveness; databases; humans; mass spectrometry; monitoring; post-translational modification; proteins; proteome; proteomics; researchers; spectrometers
Abstract:
... Mass spectrometry (MS) based proteomics have achieved a near-complete proteome coverage in humans and in several other organisms, producing a wealth of information stored in databases and bioinformatics resources. Recent implementation of selected/multiple reaction monitoring (SRM/MRM) technology in targeted proteomics introduced the possibility of quantitatively follow-up specific protein targets ...
DOI:
10.1016/j.aca.2017.01.059

14. A single pH fluorescent probe for biosensing and imaging of extreme acidity and extreme alkalinity

Author:
Jian-Bin Chao; Hui-Juan Wang; Yong-Bin Zhang; Zhi-Qing Li; Yu-Hong Liu; Fang-Jun Huo; Cai-Xia Yin; Ya-Wei Shi; Juan-Juan Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
Escherichia coli; acidity; alkalinity; analytical chemistry; condensation reactions; fluorescent dyes; image analysis; monitoring; pH; water solubility
Abstract:
... A simple tailor-made pH fluorescent probe 2-benzothiazole (N-ethylcarbazole-3-yl) hydrazone (Probe) is facilely synthesized by the condensation reaction of 2-hydrazinobenzothiazole with N-ethylcarbazole-3-formaldehyde, which is a useful fluorescent probe for monitoring extremely acidic and alkaline pH, quantitatively. The pH titrations indicate that Probe displays a remarkable emission enhancement ...
DOI:
10.1016/j.aca.2017.04.020

15. A straightforward, validated liquid chromatography coupled to tandem mass spectrometry method for the simultaneous detection of nine drugs of abuse and their metabolites in hair and nails

Author:
Delphine Cappelle; Mireille De Doncker; Celine Gys; Kamelia Krysiak; Steven De Keukeleire; Walid Maho; Cleo L. Crunelle; Geert Dom; Adrian Covaci; Alexander L.N. van Nuijs; Hugo Neels
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; cost effectiveness; guidelines; illicit drugs; liquid chromatography; medicine; metabolites; monitoring; tandem mass spectrometry; urinalysis
Abstract:
... Hair and nails allow for a stable accumulation of compounds over time and retrospective investigation of past exposure and/or consumption. Owing to their long window of detection (weeks to months), analysis of these matrices can provide information complementary to blood and urine analysis or can be used in standalone when e.g. elimination from the body has already occurred. Drugs of abuse are oft ...
DOI:
10.1016/j.aca.2017.01.022

16. 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

17. AgNPs-3D nanostructure enhanced electrochemiluminescence of CdSe quantum dot coupled with strand displacement amplification for sensitive biosensing of DNA

Author:
Meng Jiao; Guifen Jie; Lu Tan; Shuyan Niu
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
DNA; analytical chemistry; chlorides; electrical conductivity; electrochemiluminescence; electrodes; graphene oxide; nanocomposites; nanogold; nanosilver; quantum dots; silver
Abstract:
... A novel strategy using Ag nanoparticles-3D (AgNPs-3D) nanostructure enhanced electrochemiluminescence (ECL) of CdSe quantum dots (QDs) coupled with strand displacement amplification (SDA) for sensitive biosensing of DNA was successfully designed. The prepared CdSe QDs with intense ECL were assembled on the poly (diallyldimethylammonium chloride) (PDDA) graphene oxide (GO) nanocomposites modified e ...
DOI:
10.1016/j.aca.2017.06.022

18. 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

19. An ultra-sensitive fluorescent “Turn On” biosensor for glutathione and its application in living cells

Author:
Wei Wang; Xiaoshan Hou; Xin Li; Chen Chen; Xiliang Luo
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; biosensors; electrostatic interactions; fluorescence; fluorescence microscopy; glutathione; gold; image analysis; oligonucleotides; single-stranded DNA
Abstract:
... In this work, an effective controlled-release biosensor based on Au nanocages (AuNCs) capped with disulfide-containing DNA molecular gates was developed for ultra-sensitive and highly selective detection of glutathione (GSH). Oligonucleotides containing the S-S bonds were assembled on the surface of the AuNCs by means of electrostatic interactions in order to inhibit the release of fluorescent mol ...
DOI:
10.1016/j.aca.2017.10.024

20. Application of a trap-free two-dimensional liquid chromatography combined with ion trap/time-of-flight mass spectrometry for separation and characterization of impurities and isomers in cefpiramide

Author:
Jian Wang; Xu Yu; Chunmei Wen; Zhijian Wang
Source:
Analytica chimica acta 2017 pp. -
ISSN:
0003-2670
Subject:
analytical chemistry; drugs; ionization; isomers; liquid chromatography; mass spectrometry; United States
Abstract:
... High-resolution mass spectrometry had been routinely used for structure identification of impurity. However, all LC-MS methods were based on a volatile mobile phase, and a non-volatile system is used in the official analytical method of United States Pharmacopoeia for cefpiramide which limited the use of mass spectrometry for structure characterization of the impurities. Here we presented the util ...
DOI:
10.1016/j.aca.2017.08.028