1
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Zhang Q, Yao X, He M, Chen B, Zhu N, Hu B. Porous aromatic framework/polydimethylsiloxane coated stir bar sorptive extraction coupled with high performance liquid chromatography-diode array detection of trace polychlorinated biphenyls analysis in environmental waters. J Chromatogr A 2023; 1688:463709. [PMID: 36528902 DOI: 10.1016/j.chroma.2022.463709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/19/2022] [Accepted: 12/08/2022] [Indexed: 12/13/2022]
Abstract
A porous aromatic framework (PAF-47) synthesized through Suzuki coupling reaction was introduced to prepare PAF-47/polydimethylsiloxane (PDMS) coated stir bar by sol-gel technique. PAF-47/PDMS coating provided high extraction recovery (77.6-90.6%, the ratio of actual enrichment factor (EF) to theoretical EF) for five polychlorinated biphenyls (PCBs) in a relatively short time (60 min), exhibiting a faster extraction kinetics over commercial PDMS coating (12/24 h). Based on this, a new method based on PAF-47/PDMS coated stir bar sorptive extraction and high-performance liquid chromatography-diode array detection was proposed for trace analysis of target PCBs in environmental water. Under the optimized conditions, the limits of detection for five PCBs were within 44-70 ng/L, with actual EF of 64.0-71.5-fold (maximal EF of 83.3-fold). This method was successfully used to detect trace PCBs in Yangtze River water and East Lake water, with recoveries of 81.0-113% and 86.1-111%, respectively.
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Affiliation(s)
- Qiulin Zhang
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Xuezi Yao
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Man He
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Beibei Chen
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Ning Zhu
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bin Hu
- Department of Chemistry, Wuhan University, Wuhan 430072, China.
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2
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Wang X, Li C, Wu D, Shen J, Wei Y, Wang C. Enrichment of polychlorinated biphenyls in river water by using magnetic adsorbents with high selectivity to nonplanar aromatic compounds and their analysis with gas chromatography–mass spectrometry. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xuesong Wang
- Department of Analytical Science, Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Chunyan Li
- Department of Analytical Science, Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Dan Wu
- Department of Solid Phase Materials Sunresin New Materials Co., Ltd. Xi'an China
| | - Jiwei Shen
- Department of Analytical Science, Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Yinmao Wei
- Department of Analytical Science, Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science Northwest University Xi'an China
| | - Chaozhan Wang
- Department of Analytical Science, Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Key Laboratory, College of Chemistry and Materials Science Northwest University Xi'an China
- Instrumental Analysis Lab National Demonstration Center for Experimental Chemistry Education (Northwest University) Xi'an China
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3
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Yang F, Ma K, Cao Y, Ni C. Improved liquid-liquid extraction by modified magnetic nanoparticles for the detection of eight drugs in human blood by HPLC-MS. RSC Adv 2021; 11:19874-19884. [PMID: 35479245 PMCID: PMC9033689 DOI: 10.1039/d1ra01530c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/19/2021] [Indexed: 11/29/2022] Open
Abstract
Magnetic nanoparticles modified with porous titanium dioxide were used as clean-up nanospheres for the detection of eight drug poisons in human blood by high-performance liquid chromatography-mass spectrometry. The magnetic clean-up nanospheres (Fe3O4@mTiO2) with a mesoporous structure were successfully synthesized and characterized by scanning electron microscopy/energy dispersive spectroscopy, transmission electron microscopy, X-ray diffractometry, vibrating sample magnetometry, infrared spectroscopy, and Brunauer–Emmett–Teller techniques. Lipid co-extractives, such as phosphatidic acid and fatty acids, which are major interferences in HPLC-MS analysis causing ion suppression in the MS spectra of blood, could be efficiently removed by Fe3O4@mTiO2 based on the Lewis acid–Lewis base interactions. Following the optimization of the quantities of Fe3O4@mTiO2, the method was applied to the determination of eight drugs in spiked blood. The analytical ranges typically extended from 2 to 500 ng mL−1, and the recoveries ranged from 79.5–99.9% at different concentrations of blood. The limits of quantitation for drug poisons were 0.14–1.03 ng mL−1, which makes the method a viable tool for drug poison monitoring in blood. High-performance magnetic Fe3O4@TiO2, nanospheres with mesoporous structures was synthesized for cleanup phosphatidic acid and fatty acids in blood sample for 8 drugs test with HPLC-MS.![]()
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Affiliation(s)
- Feiyu Yang
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology Shanghai 200083 China +86 021 22028363 +86 021 22028362
| | - Ke Ma
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology Shanghai 200083 China +86 021 22028363 +86 021 22028362
| | - Yu Cao
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology Shanghai 200083 China +86 021 22028363 +86 021 22028362
| | - Chunfang Ni
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology Shanghai 200083 China +86 021 22028363 +86 021 22028362
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4
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Godlewska K, Jakubus A, Stepnowski P, Paszkiewicz M. Impact of environmental factors on the sampling rate of β-blockers and sulfonamides from water by a carbon nanotube-passive sampler. J Environ Sci (China) 2021; 101:413-427. [PMID: 33334535 DOI: 10.1016/j.jes.2020.08.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Passive techniques are a constantly evolving approach to the long-term monitoring of micropollutants, including pharmaceuticals, in the aquatic environment. This paper presents, for the first time, the calibration results of a new CNTs-PSDs (carbon nanotubes used as a sorbent in passive sampling devices) with an examination of the effect of donor phase salinity, water pH and the concentration of dissolved humic acids (DHAs), using both ultrapure and environmental waters. Sampling rates (Rs) were determined for the developed kinetic samplers. It has been observed that the impact of the examined environmental factors on the Rs values strictly depends on the type of the analytes. In the case of β-blockers, the only environmental parameter affecting their uptake rate was the salinity of water. A certain relationship was noted, namely the higher the salt concentration in water, the lower the Rs values of β-blockers. In the case of sulfonamides, water salinity, water pH 7-9 and DHAs concentration decreased the uptake rate of these compounds by CNTs-PSDs. The determined Rs values differed in particular when the values obtained from the experiments carried out using ultrapure water and environmental waters were compared. The general conclusion is that the calibration of novel CNTs-PSDs should be carried out under physicochemical conditions of the aquatic phase that are similar to the environmental matrix.
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Affiliation(s)
- Klaudia Godlewska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, ul. Wita Stwosza 63, Gdansk 80-308, Poland.
| | - Aleksandra Jakubus
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, ul. Wita Stwosza 63, Gdansk 80-308, Poland
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, ul. Wita Stwosza 63, Gdansk 80-308, Poland
| | - Monika Paszkiewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, ul. Wita Stwosza 63, Gdansk 80-308, Poland
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5
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Tan SC, Lee HK. Fully automated graphitic carbon nitride-based disposable pipette extraction-gas chromatography-mass spectrometric analysis of six polychlorinated biphenyls in environmental waters. J Chromatogr A 2020; 1637:461824. [PMID: 33383240 DOI: 10.1016/j.chroma.2020.461824] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 01/14/2023]
Abstract
A fully automated online emulsification-enhanced disposable pipette extraction-gas chromatography-mass spectrometry (EE-DPX-GC-MS) method has been developed for the extraction of six polychlorinated biphenyls (PCBs) from environmental waters. An in-house prepared material, graphitic carbon nitride (g-C3N4), was used as sorbent in a home-packed DPX device. The six PCBs studied include PCB 10, 28, 52, 153, 138 and 180. g-C3N4 was characterized successfully by X-ray diffraction, elemental analysis, scanning electron microscopy, Fourier-transform infrared and Raman spectroscopy. As a C-N analogue of graphite, the two-dimensional structure of g-C3N4 allows rapid analyte adsorption and desorption to take place. With a significant number of nitrogen functionalities in g-C3N4, the material dispersed well in aqueous sample, increasing the active surface area of contact between the sorbent and the sample. When coupled with a pre-emulsification step, PCBs in each portion of sample could be efficiently extracted by g-C3N4 within 20 s of gentle turbulence. Under the most favorable conditions, the automated online EE-DPX-GC-MS method achieved wide dynamic working ranges with good linearity (r2 ≥ 0.998) for all analytes. Limits of detection ranging between 4.35 and 7.82 ng L-1 were attained, with enrichment factors of between 34 and 57 and relative standard deviations (RSDs) for intra- and inter-day precision of ≤ 8.95% and ≤ 12.6%, respectively. Absolute recoveries were between 69.3% and 109%. The fully automated online EE-DPX-GC-MS approach was applied to industrial wastewaters and reservoir waters where good relative recoveries of PCBs of between 89.3% and 105% were obtained, with RSDs ≤ 11.6%.
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Affiliation(s)
- Sze Chieh Tan
- Integrative Sciences and Engineering Programme, NUS Graduate School, National University of Singapore, University Hall, Tan Chin Tuan Wing #04-02, 21 Lower Kent Ridge Road, Singapore 119077, Singapore; Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
| | - Hian Kee Lee
- Integrative Sciences and Engineering Programme, NUS Graduate School, National University of Singapore, University Hall, Tan Chin Tuan Wing #04-02, 21 Lower Kent Ridge Road, Singapore 119077, Singapore; Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
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6
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Pan S, Zhang J, He Q, Chen X, Jin M. Fabrication of benzenesulfonic acid groups modified magnetic microspheres as an MSPE adsorbent for fast determination of paraquat and diquat in human urine combined with UPLC-HRMS. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1136:121880. [DOI: 10.1016/j.jchromb.2019.121880] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/25/2019] [Accepted: 11/12/2019] [Indexed: 10/25/2022]
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7
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Magnetic cellulose nanoparticles as sorbents for stir bar-sorptive dispersive microextraction of polychlorinated biphenyls in juice samples. Talanta 2019; 201:266-270. [DOI: 10.1016/j.talanta.2019.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/01/2019] [Accepted: 04/03/2019] [Indexed: 11/15/2022]
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8
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Iron oxide/silica/polypyrrole nanocomposite sorbent for the comparison study of direct-immersion and headspace solid-phase microextraction of aldehyde biomarkers in human urine. J Pharm Biomed Anal 2018; 159:37-44. [DOI: 10.1016/j.jpba.2018.06.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/25/2018] [Accepted: 06/25/2018] [Indexed: 11/17/2022]
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9
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Qin SB, Fan YH, Li XS, Zhang Y, Qi SH. Rapid preparation of methyltrimethoxy-modified magnetic mesoporous silica as an effective solid-phase extraction adsorbent. J Sep Sci 2018; 41:669-677. [DOI: 10.1002/jssc.201700832] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/14/2017] [Accepted: 10/16/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Shi-Bin Qin
- State Key Laboratory of Biogeology and Environmental Geology; China University of Geosciences; Wuhan China
- School of Environmental Studies; China University of Geosciences; Wuhan China
| | - Yu-Han Fan
- State Key Laboratory of Biogeology and Environmental Geology; China University of Geosciences; Wuhan China
| | - Xiao-Shui Li
- State Key Laboratory of Biogeology and Environmental Geology; China University of Geosciences; Wuhan China
| | - Yuan Zhang
- State Key Laboratory of Biogeology and Environmental Geology; China University of Geosciences; Wuhan China
| | - Shi-Hua Qi
- State Key Laboratory of Biogeology and Environmental Geology; China University of Geosciences; Wuhan China
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10
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Cross-linked multilayer films deposited onto silica microparticles with tunable selectivity for anionic dyes. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Zarei AR, Nedaei M, Ghorbanian SA. Deep eutectic solvent based magnetic nanofluid in the development of stir bar sorptive dispersive microextraction: An efficient hyphenated sample preparation for ultra-trace nitroaromatic explosives extraction in wastewater. J Sep Sci 2017; 40:4757-4764. [DOI: 10.1002/jssc.201700915] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 09/27/2017] [Accepted: 10/01/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Ali Reza Zarei
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering; Malek Ashtar University of Technology; Tehran Iran
| | - Maryam Nedaei
- Department of Chemistry, Faculty of Chemistry and Chemical Engineering; Malek Ashtar University of Technology; Tehran Iran
| | - Sohrab Ali Ghorbanian
- Faculty of Chemical Engineering, School of Engineering; University of Tehran; Tehran Iran
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12
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Yang F, Zou Y, Ni C, Wang R, Wu M, Liang C, Zhang J, Yuan X, Liu W. Magnetic dispersive solid-phase extraction based on modified magnetic nanoparticles for the detection of cocaine and cocaine metabolites in human urine by high-performance liquid chromatography-mass spectrometry. J Sep Sci 2017; 40:4234-4245. [DOI: 10.1002/jssc.201700457] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 08/16/2017] [Accepted: 08/19/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Feiyu Yang
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Yun Zou
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Chunfang Ni
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Rong Wang
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Min Wu
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Chen Liang
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Jiabin Zhang
- Enriching Biotechnology (Shanghai) Co. Ltd.; Shanghai China
| | - Xiaoliang Yuan
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
| | - Wenbin Liu
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Research Institute of Criminal Science and Technology; Shanghai China
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13
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Guo Y, Hu H, Li T, Xue L, Zhang X, Zhong Z, Zhang Y, Jin Y. Primary secondary amine as a sorbent material in dispersive solid‐phase extraction clean‐up for the determination of indicator polychlorinated biphenyls in environmental water samples by gas chromatography with electron capture detection. J Sep Sci 2017. [DOI: 10.1002/jssc.201700315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuanming Guo
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
| | - Hongmei Hu
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
| | - Tiejun Li
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
| | - Lijian Xue
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
| | - Xiaoning Zhang
- Department of Mathematics, Sciences and Technology Paine College Augusta GA USA
| | - Zhi Zhong
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
| | - Yurong Zhang
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
| | - Yanjian Jin
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province Marine Fishery Institute of Zhejiang Province Zhoushan P.R. China
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14
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Facile preparation of hexadecyl-functionalized magnetic core-shell microsphere for the extraction of polychlorinated biphenyls in environmental waters. Anal Bioanal Chem 2017; 409:3337-3346. [DOI: 10.1007/s00216-017-0278-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/20/2017] [Accepted: 02/22/2017] [Indexed: 01/01/2023]
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15
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Chen ML, Min JQ, Cai MQ, Pan SD, Jin MC. Rapid analysis of six trace trichlorophenols in seawater by magnetic micro-solid-phase extraction and liquid chromatography with tandem mass spectrometry. J Sep Sci 2016; 39:2396-405. [DOI: 10.1002/jssc.201600204] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/12/2016] [Accepted: 04/15/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Mei-Lan Chen
- College of Biology and Environmental Engineering; Zhejiang Shuren University; Hangzhou China
| | - Jian-Qing Min
- College of Biology and Environmental Engineering; Zhejiang Shuren University; Hangzhou China
| | - Mei-Qiang Cai
- School of Environmental Science and Engineering; Zhejiang Gongshang University; Hangzhou China
| | - Sheng-Dong Pan
- Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals of Zhejiang Province; Ningbo Municipal Center for Disease Control and Prevention; Ningbo Zhejiang China
- Ningbo Key Laboratory of Poison Research and Control; Ningbo Municipal Center for Disease Control and Prevention; Ningbo China
| | - Mi-Cong Jin
- Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals of Zhejiang Province; Ningbo Municipal Center for Disease Control and Prevention; Ningbo Zhejiang China
- Ningbo Key Laboratory of Poison Research and Control; Ningbo Municipal Center for Disease Control and Prevention; Ningbo China
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16
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Diao CP, Yu X, Li C, Yang X, Sun A, Liu R. Evaluation of magnetic matrix solid-phase dispersion for the determination of polychlorinated biphenyls in water samples by gas chromatography with electron capture detection. J Sep Sci 2016; 39:1926-34. [DOI: 10.1002/jssc.201501140] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 03/05/2016] [Accepted: 03/08/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Chun-peng Diao
- School of Environment and Planning; Liaocheng University; Liaocheng China
| | - Xiaoting Yu
- School of Environment and Planning; Liaocheng University; Liaocheng China
| | - Cong Li
- School of Environment and Planning; Liaocheng University; Liaocheng China
| | - Xiao Yang
- School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng China
| | - Aling Sun
- School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng China
| | - Renmin Liu
- School of Chemistry and Chemical Engineering; Liaocheng University; Liaocheng China
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17
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Yang L, Han Q, Cao S, Yang J, Zhao J, Qin M, Ding M. Self-made microextraction by packed sorbent device for the cleanup of polychlorinated biphenyls from bovine serum. J Sep Sci 2016; 39:1518-23. [DOI: 10.1002/jssc.201501009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 01/16/2016] [Accepted: 01/31/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Liu Yang
- State Key Laboratory of NBC Protection for Civilian; Beijing China
| | - Qiang Han
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry; Tsinghua University; Beijing China
| | - Shuya Cao
- State Key Laboratory of NBC Protection for Civilian; Beijing China
| | - Junchao Yang
- State Key Laboratory of NBC Protection for Civilian; Beijing China
| | - Jiang Zhao
- State Key Laboratory of NBC Protection for Civilian; Beijing China
| | - Molin Qin
- State Key Laboratory of NBC Protection for Civilian; Beijing China
| | - Mingyu Ding
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry; Tsinghua University; Beijing China
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18
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Tomaszewski W, Gun'ko VM. Evaluation of adsorption and desorption steps in the solid-phase extraction of explosives using carbon/silica gel nanocomposites. J Sep Sci 2015; 38:2488-95. [PMID: 25914305 DOI: 10.1002/jssc.201500171] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/16/2015] [Accepted: 04/19/2015] [Indexed: 11/06/2022]
Abstract
New series of carbon/silica gel nanocomposites, carbosils, prepared by the carbonization of starch bound to silica gel, and carbosils additionally silylated with octadecyldimethylchlorosilane were synthesized. These materials were applied as adsorbents in the solid-phase extraction of explosive nitrate esters and nitroaromatics from aqueous solutions. The adsorption and desorption steps were evaluated separately. It was found that both the molecular properties of explosives (dipole moments, orbital energies, solvation effects) and textural properties influenced by carbon deposits or octadecyl moieties have a large impact on the recovery rates. It was shown that the composites with moderate content of carbon deposits or with the highest amounts of carbon deposits and additionally silylated can be used as materials tailored for extraction of explosives from the aqueous solutions.
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