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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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2018
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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. |
format | Online Article Text |
id | pubmed-5863342 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
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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