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1. Development of an analytical method based on solid-phase extraction and LC-MS/MS for the monitoring of current-use pesticides and their metabolites in human urine

Author:
Gao, Beibei; Poma, Giulia; Malarvannan, Govindan; Dumitrascu, Catalina; Bastiaensen, Michiel; Wang, Minghua; Covaci, Adrian
Source:
Journal of environmental sciences (China) 2022 v.111 pp. 153-163
ISSN:
1001-0742
Subject:
solid phase extraction,   etc   ; acetamiprid; bifenthrin; chemical species; chlorpyrifos; chlorpyrifos-methyl; cyfluthrin; cypermethrin; deltamethrin; dicarboxylic acids; environmental monitoring; fipronil; humans; imidacloprid; liquid chromatography; malathion; metabolites; permethrin; pyrethrins; tandem mass spectrometry; thiacloprid; triazoles; urine; China;     Show all 24 Subjects
Abstract:
... Pyrethroids, organophosphorus pesticides and fipronil have been listed as priority chemicals in human biomonitoring studies because of their wide use and potential health effects in humans. The determination of 13 pesticides, including pyrethroids (deltamethrin, cypermethrin, permethrin, cyfluthrin, bifenthrin), organophosphorus (chlorpyrifos, chlorpyrifos-methyl, and malathion), fipronil, neonico ...
DOI:
10.1016/j.jes.2021.03.029

2. A rapid Soxhlet and mini-SPE method for analysis of polycyclic aromatic hydrocarbons in atmospheric particles

Author:
Castro-Guijarro, Pablo Antonio; Álvarez-Vázquez, Eusebio Ramón; Fernández-Espinosa, Antonio José
Source:
Analytical and bioanalytical chemistry 2021 v.413 no.8 pp. 2195-2206
ISSN:
1618-2642
Subject:
solid phase extraction,   etc   ; analytical chemistry; ovens; quartz;     Show all 4 Subjects
Abstract:
... An analytical method was validated with two reference materials of polycyclic aromatic hydrocarbons in atmospheric particles. Standard reference materials (SRMs) were incorporated into the matrix of unexposed cut quartz filters. The methodology was previously designed and extraction of polycyclic aromatic hydrocarbons (PAHs) from fortified filters was based on a rapid low-cost method, for a low co ...
DOI:
10.1007/s00216-021-03188-9

3. First evaluation of genotoxicity of strong bases and zwitterions in treated household effluents

Author:
Bai, Wenzhi; Takao, Yuji; Kubo, Takashi
Source:
Journal of hazardous materials 2021 v.416 pp. 126053
ISSN:
0304-3894
Subject:
solid phase extraction,   etc   ; enzymes; genotoxicity; ion exchange; mutagens;     Show all 5 Subjects
Abstract:
... Various genotoxic substances in household effluents have not been sufficiently studied. The purpose of this study is to evaluate them using the umu test after dividing them based on the acid-base properties of their functional groups by solid-phase extraction cartridges. The results of the samples concentrated with reverse-phase cartridges showed that the substances with acid functional groups had ...
DOI:
10.1016/j.jhazmat.2021.126053

4. Magnetic Nanoparticles Modified by Ionic Liquids in Environmental Analysis

Author:
Mokhodoeva, O. B.; Maksimova, V. V.; Dzhenloda, R. Kh.; Shkinev, V. M.
Source:
Journal of analytical chemistry 2021 v.76 no.6 pp. 675-684
ISSN:
1061-9348
Subject:
solid phase extraction,   etc   ; analytical chemistry; environmental assessment; magnetism;     Show all 4 Subjects
Abstract:
... The review is devoted to the analysis of published data on the synthesis and use of magnetic nanoparticles modified by ionic liquids for the separation and determination of various substances in environmental samples. The main attention is paid to the determination of organic pollutants in natural waters, soils, etc. The main trends in the development of magnetic solid-phase extraction methods are ...
DOI:
10.1134/S1061934821060058

5. A dual preconcentration method by combining micro matrix solid‐phase dispersion extraction with field‐enhanced sample injection and micelle to cyclodextrin stacking for sensitive analysis of neutral coumarins

Author:
Chu, Chu; Liu, Caijing; Yang, Fei; Lian, Linmin; Li, Jing; Mao, Hui; Yan, Jizhong
Source:
Electrophoresis 2021 v.42 no.9-10 pp. 1102-1107
ISSN:
0173-0835
Subject:
solid phase extraction,   etc   ; adsorbents; chemical species; cyclodextrins; electrophoresis; micelles; psoralens;     Show all 7 Subjects
Abstract:
... A rapid, sensitive, environmental friendly dual preconcentration method by combining micro matrix solid‐phase dispersion extraction with field‐enhanced sample injection and micelle to cyclodextrin stacking has been developed for the determination of furocoumarins. Molecular sieve, KIT‐6, was used as an adsorbent in micro matrix solid‐phase dispersion process. The important parameters affecting off ...
DOI:
10.1002/elps.202000273

6. Boronic Acid-Functionalized Scholl-Coupling Mesoporous Polymers for Online Solid-Phase Extraction of Brassinosteroids from Plant-Derived Foodstuffs

Author:
Hou, Shenghuai; Song, Xin; Li, Lili; Wang, Rongyu; Wang, Xiao; Ji, Wenhua
Source:
Journal of agricultural and food chemistry 2021 v.69 no.16 pp. 4883-4893
ISSN:
1520-5118
Subject:
solid phase extraction,   etc   ; brassinosteroids; food chemistry; polymers; porous media;     Show all 5 Subjects
Abstract:
... Brassinosteroids (BRs) are natural, nontoxic, non-hazardous, biosafe, and eco-friendly plant hormones, possessing diverse pharmacological activities. However, little is known about the type and content of BRs in frequently consumed plant-derived foodstuffs because of their low abundance and high abundance of interference. In this study, a selective, accurate, and sensitive method based on the onli ...
DOI:
10.1021/acs.jafc.1c00211

7. Room-temperature synthesis of amino-functionalized magnetic covalent organic frameworks for efficient extraction of perfluoroalkyl acids in environmental water samples

Author:
Lu, Yuan-Yue; Wang, Xiao-Li; Wang, Lei-Lei; Zhang, Wen; Wei, Jinjian; Lin, Jin-Ming; Zhao, Ru-Song
Source:
Journal of hazardous materials 2021 v.407 pp. 124782
ISSN:
0304-3894
Subject:
solid phase extraction,   etc   ; adsorbents; ambient temperature; hydrophobicity; magnetism; nanocomposites; perfluorocarbons;     Show all 7 Subjects
Abstract:
... The novel amino-functionalized magnetic covalent organic framework nanocomposites (Fe₃O₄@[NH₂]-COFs) were fabricated at room temperature, which were explored as a magnetic adsorbent for magnetic solid-phase extraction (MSPE). On the basis of the hydrophobic surfaces of magnetic nanocomposites and introduction of primary amines into the COFs shell, Fe₃O₄@[NH₂]-COFs displayed excellent enrichment ca ...
DOI:
10.1016/j.jhazmat.2020.124782

8. Recent advances and applications of molecularly imprinted polymers in solid‐phase extraction for real sample analysis

Author:
Hu, Tianliang; Chen, Run; Wang, Qiang; He, Chiyang; Liu, Shaorong
Source:
Journal of separation science 2021 v.44 no.1 pp. 274-309
ISSN:
1615-9306
Subject:
solid phase extraction,   etc   ; adsorbents; chemical species; molecular imprinting; separation;     Show all 5 Subjects
Abstract:
... Sample pretreatment is essential for the analysis of complicated real samples due to their complex matrices and low analyte concentrations. Among all sample pretreatment methods, solid‐phase extraction is arguably the most frequently used one. However, the majority of available solid‐phase extraction adsorbents suffer from limited selectivity. Molecularly imprinted polymers are a type of tailor‐ma ...
DOI:
10.1002/jssc.202000832

9. Development of radioactive tracing coupled with LC/MS-IT-TOF methodology for the discovery and identification of diaveridine metabolites in pigs

Author:
Wang, Liye; Wen, Lihua; Pan, Yuanhu; Liu, Zhenli; Zhang, Chenyun; Yuan, Zonghui; Huang, Lingli
Source:
Food chemistry 2021 v.363 pp. 130200
ISSN:
0308-8146
Subject:
solid phase extraction,   etc   ; bile; chromatography; feces; food chemistry; kidneys; liver; metabolites; methanol; muscles; urine;     Show all 11 Subjects
Abstract:
... We developed a sensitive and reliable method by coupling radiotracing with LC/MS-IT-TOF to identify diaveridine metabolites. Tritium-labeled diaveridine was orally administered to pigs and their organs, blood, bile, and excreta were collected. Under optimized conditions, radioactive recovery was >90% and the highest numbers of metabolites were detected. MCX-based solid-phase extraction was conduct ...
DOI:
10.1016/j.foodchem.2021.130200

10. Analysis of tebuconazole residues in coconut water, kernel and leaves using LC–MS/MS

Author:
Suganthi, A.; Rajeswari, E.; Sivakumar, V.; Bhuvaneswari, K.; Madhu Sudhanan, E.; Sathiah, N.; Prabakaran, K.
Source:
Food chemistry 2021 v.359 pp. 129920
ISSN:
0308-8146
Subject:
solid phase extraction,   etc   ; ; acetonitrile; coconut water; coconuts; food chemistry; ionization; liquid chromatography; seeds; tebuconazole; trees;     Show all 11 Subjects
Abstract:
... A method was validated for determining tebuconazole residues in coconut water, kernel and leaves using Liquid chromatography-Mass spectrometry/Mass spectrometry (LC–MS/MS) with electro spray ionization in positive ion mode. Samples were extracted with acetonitrile and subsequent clean-up was done using dispersive solid phase extraction. Recovery ranged between 70 and 114.39 % and the RSD was betwe ...
DOI:
10.1016/j.foodchem.2021.129920

11. Simplified miniaturized analytical set-up based on molecularly imprinted polymer directly coupled to UV detection for the determination of benzoylecgonine in urine

Author:
Bouvarel, Thomas; Chendo, Christophe; Delaunay, Nathalie; Pichon, Valérie
Source:
Talanta 2021 v.233 pp. 122611
ISSN:
0039-9140
Subject:
solid phase extraction,   etc   ; chromatography; cocaine; humans; laws and regulations; molecular imprinting; permeability; polymers; urine;     Show all 9 Subjects
Abstract:
... A simple, selective, and sensitive method involving a miniaturized solid phase extraction step based on a monolithic molecularly imprinted polymer (MIP) directly coupled on-line to UV detection was developed for the determination of benzoylecgonine (BZE) in complex biological samples. Monolithic MIPs were prepared into 100 μm internal diameter fused-silica capillaries either by thermal or photopol ...
DOI:
10.1016/j.talanta.2021.122611

12. Identification of chloramination disinfection by-products from phenylalanine in tap drinking water

Author:
Zhai, Peilu; Shen, Yeming; Xi, Pengxuan; Wu, Minghuo; Wu, Xinping; Li, Li; Cao, Wanxue; Ke, Yu; Zhang, Jianye
Source:
Chemosphere 2021 v.278 pp. 130403
ISSN:
0045-6535
Subject:
solid phase extraction,   etc   ; disinfection; hydrazones; phenylalanine; tandem mass spectrometry; tap water; ultra-performance liquid chromatography;     Show all 7 Subjects
Abstract:
... Phenylalanine (Phe) is widely present in natural water and serves as a precursor of disinfection by-products (DBPs). We reported the identification of chloramination DBPs from Phe in drinking water using ultra-high performance liquid chromatography (UHPLC) coupled with complementary high-resolution quadrupole time-of-flight (QTOF) and triple quadrupole (tQ) tandem mass spectrometry (MS/MS). In the ...
DOI:
10.1016/j.chemosphere.2021.130403

13. Recognizing adsorption of Cd(Ⅱ) by a novel core-shell mesoporous ion-imprinted polymer: Characterization, binding mechanism and practical application

Author:
Cao, Hui; Yang, Pu; Ye, Tai; Yuan, Min; Yu, Jinsong; Wu, Xiuxiu; Yin, Fengqin; Li, Yan; Xu, Fei
Source:
Chemosphere 2021 v.278 pp. 130369
ISSN:
0045-6535
Subject:
solid phase extraction,   etc   ; adsorption; models; polymers; porous media; reaction kinetics; silica; sorbents; sorption isotherms; surface area;     Show all 10 Subjects
Abstract:
... A novel monodispersed Cd(II) ion-imprinted polymer (IIP) was synthesized inside core-shell mesoporous silica (C-SMS) particles to improve the diffusion kinetics of the polymer. The synthesized IIP@C-SMS was characterized and subsequently used in solid-phase extraction (SPE) for the selective adsorption of Cd(II) in aquatic samples. The results indicated that IIP had been successfully assembled ins ...
DOI:
10.1016/j.chemosphere.2021.130369

14. Development and validation of an analytical method for the multiresidue analysis of pesticides in sesame seeds using liquid- and gas chromatography with tandem mass spectrometry

Author:
Shinde, Raviraj; Pardeshi, Anita; Dhanshetty, Manisha; Anastassiades, Michelangelo; Banerjee, Kaushik
Source:
Journal of chromatography 2021 v.1652 pp. 462346
ISSN:
0021-9673
Subject:
solid phase extraction,   etc   ; acetonitrile; multiresidue analysis; pesticides; quality control; tandem mass spectrometry;     Show all 6 Subjects
Abstract:
... For the first time, an analytical method for the multiresidue analysis of multiclass pesticides in sesame seeds using liquid- and gas chromatography with tandem mass spectrometry (LC-MS/MS and GC-MS/MS) was developed and validated. At first, the sample was comminuted after adding water (1:2 w/v). The sample preparation workflow included acetonitrile extraction, followed by freeze-out of the extrac ...
DOI:
10.1016/j.chroma.2021.462346

15. Self-supporting crumpled graphene balls as stable and reusable adsorbents for solid-phase extraction

Author:
Chu, Yuntong; Liu, Lin; Chen, Deqiang; Yang, Tingting; Ni, Siyu; Yang, Guang; Nie, Huali
Source:
Carbon 2021 v.181 pp. 389-397
ISSN:
0008-6223
Subject:
solid phase extraction,   etc   ; 2-chlorophenol; adsorbents; adsorption; chemical structure; desalination; graphene; nanosheets; pentachlorophenol;     Show all 9 Subjects
Abstract:
... The substantial aggregation of pristine graphene nanosheets or the possible escape of graphene from the supporting materials decreases its powerful adsorption capacity and diminishes its practical applications in graphene-based solid-phase extraction (SPE). It is highly desirable for these graphene-based adsorbents to be dispersive, stable and reusable. In this study, we report the use of self-sup ...
DOI:
10.1016/j.carbon.2021.05.010

16. Computational design and synthesis of molecular imprinted polymers for selective solid phase extraction of sulfonylurea herbicides

Author:
Han, Fang; Zhou, Dian-Bing; Song, Wei; Hu, Yan-Yun; Lv, Ya-Ning; Ding, Lei; Zheng, Ping; Jia, Xue-Ying; Zhang, Lei; Deng, Xiao-Jun
Source:
Journal of chromatography 2021 v.1651 pp. 462321
ISSN:
0021-9673
Subject:
solid phase extraction,   etc   ; acrylic acid; chemometrics; chromatography; metsulfuron; molecular dynamics; molecular imprinting;     Show all 7 Subjects
Abstract:
... A high-efficiency approach for the synthesis of molecularly imprinted polymers has been developed and further for the solid-phase extraction of sulfonylurea herbicides in food samples. Molecular simulation approach combined chemometric selected metsulfuron-methyl (MSM) and 2-trifluoromethyl acrylic acid (TFMAA) as the template and the monomer to synthesize the molecularly imprinted polymers (MIPs) ...
DOI:
10.1016/j.chroma.2021.462321

17. Residue behavior and safety evaluation of pymetrozine in tea

Author:
Yu, Huan; Sun, Hezhi; Wang, Xinru; Liang, Yabo; Guo, Mingming; Yu, Jiawei; Yang, Mei; Zhang, Xinzhong; Luo, Fengjian; Zhou, Li
Source:
Journal of the science of food and agriculture 2021 v.101 no.10 pp. 4118-4124
ISSN:
0022-5142
Subject:
solid phase extraction,   etc   ; ; agriculture; analytical methods; green tea; half life; pymetrozine; risk; tea (beverage); China;     Show all 10 Subjects
Abstract:
... BACKGROUND: Pymetrozine is a widely used pesticide. It is challenging to analyze and difficult to manage due to the large gap in its global maximum residue limits (MRLs) in tea. The development of a high‐efficiency detection method for the evaluation of the transfer of residual pymetrozine from tea plantations to tea cups is therefore of prime significance. RESULTS: An analytical method for the de ...
DOI:
10.1002/jsfa.11047

18. Evaluation of BenzoDODA grafted polymeric resin for rapid and reliable assaying of plutonium in sediment samples

Author:
Pant, Amar D.; Ruhela, R.; Limje, C.; Anil Kumar, S.; Singh, A.K.; Kumar, Suja A.; Sugandhi, S.; Kain, V.; Tomar, B.S.
Source:
Journal of environmental radioactivity 2021 v.234 pp. 106620
ISSN:
0265-931X
Subject:
solid phase extraction,   etc   ; chromatography; coprecipitation; electroplating; plutonium; polymers; radioactivity; sediments; sorption; spectroscopy; wet digestion method;     Show all 11 Subjects
Abstract:
... The paper reports a new rapid radioanalytical procedure for the determination of plutonium (Pu) in sediments by solid phase extraction chromatography (SPEC) using Bis-(2-ethylhexyl) carbamoyl methoxy phenoxy-bis-(2-ethylhexyl) grafted resin, abbreviated as Benzodioxodiamide (BenzoDODA) grafted resin. The resin was synthesized and evaluated for its sorption behaviour towards Pu in batch and column ...
DOI:
10.1016/j.jenvrad.2021.106620

19. Method for the simultaneous analysis of 300 pesticide residues in hair by LC-MS/MS and GC-MS/MS, and its application to biomonitoring of agricultural workers

Author:
Park, Eunyoung; Lee, Jiho; Lee, Junghak; Lee, Jonghwa; Lee, Hye Suk; Shin, Yongho; Kim, Jeong-Han
Source:
Chemosphere 2021 v.277 pp. 130215
ISSN:
0045-6535
Subject:
solid phase extraction,   etc   ; acetonitrile; environmental monitoring; formic acid; grinding; human health; nitrogen; pesticides; solvents;     Show all 9 Subjects
Abstract:
... Multiresidual pesticide analysis in hair can provide useful perspectives on the relationship between pesticides and human health. To establish a rapid and simultaneous analytical method using LC-MS/MS and GC-MS/MS, optimization of hair pulverization, extraction solvent and purification with dispersive SPE was performed for 300 pesticides. Hair pulverization was standardized with a ball mill, at 30 ...
DOI:
10.1016/j.chemosphere.2021.130215

20. Chiral UiO-MOFs based QCM sensors for enantioselective discrimination of hazardous biomolecule

Author:
Yang, Xiu-Li; Zang, Rong-Bin; Shao, Rong; Guan, Rong-Feng; Xie, Ming-Hua
Source:
Journal of hazardous materials 2021 v.413 pp. 125467
ISSN:
0304-3894
Subject:
solid phase extraction,   etc   ; cysteine; enantiomers; enantioselectivity; enthalpy; enzymes; hydrogen bonding; quartz crystal microbalance; tartaric acid;     Show all 9 Subjects
Abstract:
... Developments of enantioselective devices for discriminating bio-enantiomers is of significant importance. Due to the vital role of Cysteine (Cys) in biological processes and the hazardous effect of its D-enantiomer, discriminating Cys enantiomers without auxiliary enzyme is highly wanted. In this work, a pair of UiO-MOF enantiomers (UiO-tart) have been fabricated through post-modification, which c ...
DOI:
10.1016/j.jhazmat.2021.125467