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Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber

A new method has been developed to simultaneously determine 7 pyrethroid residues in tea brew using gas chromatography-mass spectrometry (GC-MS) combined with solid phase microextraction (SPME) with multiwalled carbon nanotubes (MWCNTs) coated fiber. The MWCNTs coated fiber of SPME was homemade by u...

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Autores principales: Ren, Dongxia, Sun, Chengjun, Ma, Guanqun, Yang, Danni, Zhou, Chen, Xie, Jiayu, Li, Yongxin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5863342/
https://www.ncbi.nlm.nih.gov/pubmed/29707002
http://dx.doi.org/10.1155/2018/8426598
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author Ren, Dongxia
Sun, Chengjun
Ma, Guanqun
Yang, Danni
Zhou, Chen
Xie, Jiayu
Li, Yongxin
author_facet Ren, Dongxia
Sun, Chengjun
Ma, Guanqun
Yang, Danni
Zhou, Chen
Xie, Jiayu
Li, Yongxin
author_sort Ren, Dongxia
collection PubMed
description A new method has been developed to simultaneously determine 7 pyrethroid residues in tea brew using gas chromatography-mass spectrometry (GC-MS) combined with solid phase microextraction (SPME) with multiwalled carbon nanotubes (MWCNTs) coated fiber. The MWCNTs coated fiber of SPME was homemade by using stainless steel wire as coating carrier and polyacrylonitrile (PAN) solution as adhesive glue. Under the optimized conditions, a good linearity was shown for bifenthrin, fenpropathrin, permethrin, and cyfluthrin in 1–50 ng mL(−1) and for cypermethrin, fenvalerate, and deltamethrin in 5–50 ng mL(−1). The correlation coefficients were in the range of 0.9948–0.9999. The average recoveries of 7 pyrethroids were 94.2%–107.3% and the relative standard deviations (RSDs) were less than 15%. The detection limit of the method ranged from 0.12 to 1.65 ng mL(−1). The tea brew samples made from some commercial tea samples were analyzed. Among them, bifenthrin, fenpropathrin, and permethrin were found. The results show that the method is rapid and sensitive and requires low organic reagent consumption, which can be well used for the detection of the pyrethroids in tea brew.
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spelling pubmed-58633422018-04-29 Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber Ren, Dongxia Sun, Chengjun Ma, Guanqun Yang, Danni Zhou, Chen Xie, Jiayu Li, Yongxin Int J Anal Chem Research Article A new method has been developed to simultaneously determine 7 pyrethroid residues in tea brew using gas chromatography-mass spectrometry (GC-MS) combined with solid phase microextraction (SPME) with multiwalled carbon nanotubes (MWCNTs) coated fiber. The MWCNTs coated fiber of SPME was homemade by using stainless steel wire as coating carrier and polyacrylonitrile (PAN) solution as adhesive glue. Under the optimized conditions, a good linearity was shown for bifenthrin, fenpropathrin, permethrin, and cyfluthrin in 1–50 ng mL(−1) and for cypermethrin, fenvalerate, and deltamethrin in 5–50 ng mL(−1). The correlation coefficients were in the range of 0.9948–0.9999. The average recoveries of 7 pyrethroids were 94.2%–107.3% and the relative standard deviations (RSDs) were less than 15%. The detection limit of the method ranged from 0.12 to 1.65 ng mL(−1). The tea brew samples made from some commercial tea samples were analyzed. Among them, bifenthrin, fenpropathrin, and permethrin were found. The results show that the method is rapid and sensitive and requires low organic reagent consumption, which can be well used for the detection of the pyrethroids in tea brew. Hindawi 2018-03-08 /pmc/articles/PMC5863342/ /pubmed/29707002 http://dx.doi.org/10.1155/2018/8426598 Text en Copyright © 2018 Dongxia Ren et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Ren, Dongxia
Sun, Chengjun
Ma, Guanqun
Yang, Danni
Zhou, Chen
Xie, Jiayu
Li, Yongxin
Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
title Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
title_full Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
title_fullStr Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
title_full_unstemmed Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
title_short Determination of Pyrethroids in Tea Brew by GC-MS Combined with SPME with Multiwalled Carbon Nanotube Coated Fiber
title_sort determination of pyrethroids in tea brew by gc-ms combined with spme with multiwalled carbon nanotube coated fiber
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5863342/
https://www.ncbi.nlm.nih.gov/pubmed/29707002
http://dx.doi.org/10.1155/2018/8426598
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