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1. Discussion: Automated filtration or really just solid phase extraction

Author:
Falenas, Freyjadour
Source:
Journal of chromatography 2019 v.1601 pp. 388-389
ISSN:
0021-9673
Subject:
solid phase extraction,   etc   ; automation; chromatography; filtration;     Show all 4 Subjects
Abstract:
... In this article, we discuss a recent publication by Casati et al. (2018) focusing on the sample preparation that is described for the analysis of phosphatidylethanols and whether or not their proposed method of ‘automated filtration’ and the advantages it brings is really just a standard solid phase extraction protocol. ...
DOI:
10.1016/j.chroma.2019.03.052

2. Flow-through magnetic-stirring assisted system for uranium(VI) extraction: First 3D printed device application

Author:
Rodas Ceballos, Melisa; Estela, José Manuel; Cerdà, Víctor; Ferrer, Laura
Source:
Talanta 2019 v.202 pp. 267-273
ISSN:
0039-9140
Subject:
solid phase extraction,   etc   ; durability; experimental design; groundwater; uranium;     Show all 5 Subjects
Abstract:
... A 3D printed solid-phase extraction (SPE) device for uranium(VI) extraction has been fabricated using stereolithographic 3D printing. The 3D printed device is shaped as a stirred reactor chamber containing a network of small cubes, which were impregnated with TEVA resin for the extraction of U(VI) from water matrices without doing any previous pretreatment. A flow-through system was combined with ...
DOI:
10.1016/j.talanta.2019.05.026

3. Applications of covalent organic frameworks in analytical chemistry

Author:
Chen, Lixiao; Wu, Qi; Gao, Jie; Li, Hui; Dong, Shuqing; Shi, Xiaofeng; Zhao, Liang
Source:
Trends in analytical chemistry 2019 v.113 pp. 182-193
ISSN:
0165-9936
Subject:
solid phase extraction,   etc   ; analytical chemistry; chemical bonding; chromatography; porosity;     Show all 5 Subjects
Abstract:
... Covalent organic frameworks (COFs) are an emerging class of porous crystalline materials assembled by symmetric and rigid organic building blocks through strong covalent bonds. COFs have attractive properties such as highly tunable porosity, ordered channels, optional building blocks, predictable control of structures, easy to functionalize. Until now, COFs have attracted increasing attention from ...
DOI:
10.1016/j.trac.2019.01.016

4. Preparation of a stoichiometric molecularly imprinted polymer for auramine O and application in solid‐phase extraction

Author:
Pataer, Parezhati; Muhammad, Turghun; Turahun, Yunusjan; Yang, Wenwu; Aihebaier, Sailemayi; Wubulikasimu, Muyasier; Chen, Lingxin
Source:
Journal of separation science 2019 v.42 no.8 pp. 1634-1643
ISSN:
1615-9306
Subject:
solid phase extraction,   etc   ; binding sites; molecular imprinting; polymers; sorbents;     Show all 5 Subjects
Abstract:
... We describe a stoichiometric approach to the synthesis of molecularly imprinted polymers specific for auramine O. Using the stoichiometric interaction in molecular imprinting, no excess of binding sites is necessary and binding sites are only located inside the imprinted cavities. The free base of the template was obtained to facilitate the interaction with the monomers. Itaconic acid was selected ...
DOI:
10.1002/jssc.201801234

5. High-Throughput Automated Micro-permethylation for Glycan Structure Analysis

Author:
Shajahan, Asif; Supekar, Nitin; Heiss, Christian; Azadi, Parastoo
Source:
Analytical chemistry 2018 v.91 no.2 pp. 1237-1240
ISSN:
1520-6882
Subject:
solid phase extraction,   etc   ; equipment; mass spectrometry; polysaccharides;     Show all 4 Subjects
Abstract:
... Permethylation is an essential technique for the detailed structural characterization of glycans by mass spectrometry. However, it requires specialized skills and equipment and is labor-intensive. While this limits glycan analysis to a handful of experts, the increasing awareness of the tremendous importance of glycans in physiological processes of health and disease has drastically raised the dem ...
DOI:
10.1021/acs.analchem.8b05146

6. Combining extraction and purification steps in sample preparation for environmental matrices: A review of matrix solid phase dispersion (MSPD) and pressurized liquid extraction (PLE) applications

Author:
Hoff, Rodrigo Barcellos; Pizzolato, Tânia Mara
Source:
Trends in analytical chemistry 2018 v.109 pp. 83-96
ISSN:
0165-9936
Subject:
solid phase extraction,   etc   ; analytical chemistry; liquids;     Show all 3 Subjects
Abstract:
... The search for adequate sample preparation methods is a permanent concern for the analysis of contaminants and residues analysis in environment and biological samples. Ideally, a sample preparation method must be capable to perform extraction and purification in a simultaneous way. Although several methodologies have been developed in recent years, meeting the above proposed criteria, the overall ...
DOI:
10.1016/j.trac.2018.10.002

7. Recent advances in flow-based automated solid-phase extraction

Author:
Calderilla, Carlos; Maya, Fernando; Leal, Luz O.; Cerdà, Víctor
Source:
Trends in analytical chemistry 2018 v.108 pp. 370-380
ISSN:
0165-9936
Subject:
solid phase extraction,   etc   ; automation; magnetism; manufacturing;     Show all 4 Subjects
Abstract:
... Automated flow-based solid-phase extraction (SPE) is an advantageous tool for analytical sample pretreatment, and the development of novel materials and fabrication techniques to build improved SPE devices are crucial to further advance the field. Additive manufacturing (3D printing) is offering tremendous advantages in comparison with conventional manufacturing techniques, enabling the fast and e ...
DOI:
10.1016/j.trac.2018.09.011

8. Comparative stability of aspartame and neotame in yoghurt

Author:
Kumari, Anuradha; Arora, Sumit; Choudhary, Sonika; Singh, Ashish Kumar; Tomar, Sudhir K
Source:
International journal of dairy technology 2018 v.71 no.1 pp. 81-88
ISSN:
1364-727X
Subject:
solid phase extraction,   etc   ; aspartame; fermentation; pasteurization; yogurt;     Show all 5 Subjects
Abstract:
... The comparative stability of aspartame and neotame was monitored in yoghurt during its processing, fermentation and storage. A solid‐phase extraction method was suggest changing it to developed for the isolation of aspartame and neotame. Pasteurisation (85 °C/30 min) resulted in approximately 47% and 3% loss of aspartame and neotame, respectively. During fermentation, 3% loss of aspartame was obse ...
DOI:
10.1111/1471-0307.12381

9. Magnetic nanostructures for preconcentration, speciation and determination of chromium ions: A review

Author:
Filik, Hayati; Avan, Asiye Aslıhan
Source:
Talanta 2019 v.203 pp. 168-177
ISSN:
0039-9140
Subject:
solid phase extraction,   etc   ; analytical methods; chromium; coatings; detection limit; ions; magnetism; nanoparticles; sorbents;     Show all 9 Subjects
Abstract:
... Magnetic nanoparticles based solid-phase extraction is a new analytical technique based on the use of magnetic sorbents for the preconcentration and quantification of different inorganic and organic species. The present review concentrates on recent developments that have been built in magnetic nanostructures-based solid phase extraction, speciation and quantification of chromium ions. Besides, a ...
DOI:
10.1016/j.talanta.2019.05.061

10. Colorimetric determination of food colourants using solid phase extraction into polymethacrylate matrix

Author:
Dudkina, A.A.; Volgina, T.N.; Saranchina, N.V.; Gavrilenko, N.A.; Gavrilenko, M.A.
Source:
Talanta 2019 v.202 pp. 186-189
ISSN:
0039-9140
Subject:
solid phase extraction,   etc   ; beverages; colorimetry; food colorants; high performance liquid chromatography; juices; polymethylmethacrylate; tartrazine;     Show all 8 Subjects
Abstract:
... This paper describes a simple colorimetric method for determination of Brilliant Blue, Sunset Yellow, Ponceau 4R and Tartrazine using transparent polymer optode. The method provided acceptable linear ranges 0.01–3.0 mg L−1 with correlation coefficients higher than 0.995 under the optimal conditions. Commercial beverages and juices containing different amounts of food dyes were analyzed and the res ...
DOI:
10.1016/j.talanta.2019.04.055

11. Electrospun polymer composite nanofiber-based in-syringe solid phase extraction in tandem with dispersive liquid-liquid microextraction coupled with HPLC-FD for determination of aflatoxins in soybean

Author:
Nouri, Nina; Sereshti, Hassan
Source:
Food chemistry 2019 v.289 pp. 33-39
ISSN:
0308-8146
Subject:
solid phase extraction,   etc   ; adsorbents; aflatoxins; detection limit; graphene oxide; liquid-phase microextraction; nanofibers; polyurethanes; soybeans;     Show all 9 Subjects
Abstract:
... A fast method based on in-syringe solid phase extraction combined with dispersive liquid-liquid microextraction was developed for extraction of aflatoxins prior to HPLC-FD. Electrospun polyurethane nanofibers doped with graphene oxide were collected on a thin metal net sheet without using a binder, placed into a filter holder between filter papers on a syringe tip and used as an efficient adsorben ...
DOI:
10.1016/j.foodchem.2019.03.026

12. An investigation of template anchoring strategy for molecularly imprinting materials based on nanomagnetic polyhedral oligomeric silsesquioxanes composites

Author:
Peng, Ruifeng; Zhou, Ziqing; Wang, Qian; Yu, Qiongwei; Yan, Xiaoxia; Qin, Haixiao; Lei, Yunyi; He, Haibo; Luo, Liqiang
Source:
Journal of chromatography 2019 v.1597 pp. 28-38
ISSN:
0021-9673
Subject:
solid phase extraction,   etc   ; adsorbents; chromatography; copolymerization; hydrogen; magnetism; milk; moieties; nanocomposites; physicochemical properties; silsesquioxanes; tetracycline;     Show all 12 Subjects
Abstract:
... A template anchoring strategy for high performance molecularly imprinting materials (MI-materials) was displayed in the present work, which involved efficient usage of template molecules with the aid of functional monomer grafted on the support. The imprinting polymerization process was carried out on the surface of carboxyl functionalized Fe3O4@POSS (Fe3O4@POSS-COOH) anchoring with tetracycline t ...
DOI:
10.1016/j.chroma.2019.03.036

13. Enhancement of liquid chromatography-ion trap mass spectrometry analysis of 4(5)-methylimidazole in biscuits through derivatization with dansyl chloride

Author:
Wu, Chunjian; Wang, Li; Li, He; Yu, Shujuan
Source:
Journal of chromatography 2019 v.1596 pp. 1-7
ISSN:
0021-9673
Subject:
solid phase extraction,   etc   ; biscuits; carcinogens; derivatization; liquid chromatography; mass spectrometry; microextraction;     Show all 7 Subjects
Abstract:
... The presence of potential carcinogen 4(5)-Methylimidazole (4-MeI) in foods causes much concern, stressing the need of a sensitive determination means. Here, we proposed a high-sensitivity method to determine 4-MeI in biscuits using dansyl chloride derivatization and disperse liquid-liquid micro-extraction (DLLME) followed by a liquid chromatography-ion trap mass spectrometry (LC-IT-MS) analysis. T ...
DOI:
10.1016/j.chroma.2019.02.061

14. Development of dispersive solid-phase extraction with polyphenylene conjugated microporous polymers for sensitive determination of phenoxycarboxylic acids in environmental water samples

Author:
Ma, Jin-Qing; Liu, Lu; Wang, Xia; Chen, Li-Zong; Lin, Jin-Ming; Zhao, Ru-Song
Source:
Journal of hazardous materials 2019 v.371 pp. 433-439
ISSN:
0304-3894
Subject:
solid phase extraction,   etc   ; adsorbents; carboxylic acids; detection limit; herbicides; monitoring; polymers; porous media; surface area;     Show all 9 Subjects
Abstract:
... High-performance capturing polar phenoxycarboxylic acids herbicides (PCAs) from water samples remains a great challenge because PCAs form salt easily and dissolve. Polyphenylene-based conjugated microporous polymers (PP-CMPs), a fascinating type of polymers, bear π-conjugation over 3D polyphenylene scaffolds, inherent micropore, and large surface area, which are essential for capturing trace PCAs ...
DOI:
10.1016/j.jhazmat.2019.03.033

15. Carbofuran: analytical methods and its determination in natural water samples by flow injection DPA(III)–H₂SO₄ chemiluminescence

Author:
Asghar, Muhammad; Yaqoob, Mohammed; Nabi, Abdul
Source:
International journal of environmental analytical chemistry 2019 v.99 no.7 pp. 692-705
ISSN:
1029-0397
Subject:
solid phase extraction,   etc   ; analytical methods; carbofuran; chemiluminescence; detection limit; freshwater; reaction mechanisms; standard deviation; sulfuric acid;     Show all 9 Subjects
Abstract:
... This study proposes, a simple, rapid and sensitive chemiluminescent (CL) method for determination of carbofuran based on diperiodatoargentate(III) (DPA)-sulfuric acid (H₂SO₄) reaction coupled with flow injection (FI) methodology. Under optimum conditions, a linear standard curve is achieved in the range of 0.001–8.0 mg L–¹ (R²= 0.9994 (n = 11) with relative standard deviation (RSD) of 1.4–3.7% (n ...
DOI:
10.1080/03067319.2019.1609460

16. Solid phase colorimetric determination of iodine in food grade salt using polymethacrylate matrix

Author:
Gavrilenko, Nataliya A.; Fedan, Dmitrii A.; Saranchina, Nadezhda V.; Gavrilenko, Mikhail A.
Source:
Food chemistry 2019 v.280 pp. 15-19
ISSN:
0308-8146
Subject:
solid phase extraction,   etc   ; absorbance; color; colorimetry; iodine; mineral water; polymethylmethacrylate; portable equipment;     Show all 8 Subjects
Abstract:
... A novel colorimetric sensor has been proposed for sensitive and accurate detection of iodine forms using polymethacrylate matrix, which also has the outlook for use with samples without pre-treatment and is suitable to fit in a portable instrument for in situ iodine analysis. This determination method is based on interaction of polymethacrylate matrix with iodine forms followed by measurement of a ...
DOI:
10.1016/j.foodchem.2018.12.037

17. A critical retrospective and prospective review of designs and materials in in-line solid-phase extraction capillary electrophoresis

Author:
Pont, L.; Pero-Gascon, R.; Gimenez, E.; Sanz-Nebot, V.; Benavente, F.
Source:
Analytica chimica acta 2019
ISSN:
0003-2670
Subject:
solid phase extraction,   etc   ; analytical chemistry; capillary electrophoresis; detection limit; instrumentation; ligands; sorbents;     Show all 7 Subjects
Abstract:
... Several strategies have been developed to decrease the concentration limits of detection (LODs) in capillary electrophoresis (CE). Nowadays, chromatographic-based preconcentration using a microcartridge integrated in the separation capillary for in-line solid-phase extraction capillary electrophoresis (SPE-CE) is one of the best alternatives for high throughput and reproducible sample clean-up and ...
DOI:
10.1016/j.aca.2019.05.022

18. Use of a modified QuEChERS method for the determination of mycotoxin residues in edible nuts by nano flow liquid chromatography high resolution mass spectrometry

Author:
Alcántara-Durán, Jaime; Moreno-González, David; García-Reyes, Juan F.; Molina-Díaz, Antonio
Source:
Food chemistry 2019 v.279 pp. 144-149
ISSN:
0308-8146
Subject:
solid phase extraction,   etc   ; almonds; guidelines; laws and regulations; liquid chromatography; mass spectrometry; mycotoxins; peanuts; pistachios; sorbents;     Show all 10 Subjects
Abstract:
... A nanoflow liquid chromatography high resolution mass spectrometry method for the quantification of mycotoxins in nuts has been developed. Two strategies based on QuEChERS methodology were evaluated. Thus, EMR-lipid was compared with a conventional mixture of PSA and C18 dispersive solid phase extraction sorbents which have been commonly used in this type of matrices as sample clean-up. The result ...
DOI:
10.1016/j.foodchem.2018.11.149

19. A multi-analyte LC–MS/MS method for screening and quantification of 16 synthetic cathinones in hair: Application to postmortem cases

Author:
Freni, Francesca; Bianco, Sara; Vignali, Claudia; Groppi, Angelo; Moretti, Matteo; Osculati, Antonio Marco Maria; Morini, Luca
Source:
Forensic science international 2019 v.298 pp. 115-120
ISSN:
0379-0738
Subject:
solid phase extraction,   etc   ; guidelines; hairs; hydrochloric acid; liquid chromatography; screening; spectrometers; tandem mass spectrometry;     Show all 8 Subjects
Abstract:
... A multi-analyte method for detection and quantification of 16 synthetic cathinones (known also as “bath salts”) in human hair has been developed and fully validated using liquid chromatography–tandem mass spectrometry system.About 20 mg of hair samples, previously washed and homogenized, were ultrasonicated with 1 mL HCl 0.1 M solution. Samples were then extracted using a solid phase extraction pr ...
DOI:
10.1016/j.forsciint.2019.02.036

20. Determination of trace amounts of aromatic amines after magnetic solid‐phase extraction using silver‐modified Fe3O4/graphene nanocomposite

Author:
Alasl, Mohammad Reza Kashefi; Sohrabi, Mahmoud Reza; Davallo, Mehran
Source:
Journal of separation science 2019 v.42 no.9 pp. 1777-1785
ISSN:
1615-9306
Subject:
solid phase extraction,   etc   ; aromatic amines; detection limit; high performance liquid chromatography; magnetism; nanocomposites; sorbents; standard deviation;     Show all 8 Subjects
Abstract:
... In this work, a fast and simple magnetic dispersive solid phase extraction methodology was developed utilizing Ag@magnetite nanoparticles@graphene nanocomposite as an efficient magnetic nanosorbent for preconcentration and determine of five aromatic amines in water samples. The sorbent was characterized by diverse characterization techniques. After the extraction, high‐performance liquid chromatog ...
DOI:
10.1002/jssc.201800896