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Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder

This study was conducted to monitor the level of bifenthrin residues in pear sprayed with 2% bifenthrin wettable powder (WP) at the recommended rate at four different schedules prior to harvest. The target analyte was extracted with acetone, partitioned into dichloromethane, and then purified by flo...

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Autores principales: Choi, Jeong-Heui, Liu, Xue, Kim, Hee-Kwon, Shim, Jae-Han
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Singapore 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7006288/
https://www.ncbi.nlm.nih.gov/pubmed/32038818
http://dx.doi.org/10.5487/TR.2009.25.1.041
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author Choi, Jeong-Heui
Liu, Xue
Kim, Hee-Kwon
Shim, Jae-Han
author_facet Choi, Jeong-Heui
Liu, Xue
Kim, Hee-Kwon
Shim, Jae-Han
author_sort Choi, Jeong-Heui
collection PubMed
description This study was conducted to monitor the level of bifenthrin residues in pear sprayed with 2% bifenthrin wettable powder (WP) at the recommended rate at four different schedules prior to harvest. The target analyte was extracted with acetone, partitioned into dichloromethane, and then purified by florisil chromatographic column. The residue determination was performed on a DB-5 capillary column using GC with electron capture detector (ECD). Linearity of this method was quite good (r(2) = 0.9951) in the concentration ranged from 0.2 mg/kg to 10 mg/kg. Recovery test was carried out at two concentration levels, 0.2 mg/kg and 1.0 mg/kg, in three replicates, and their rates were from 82.9% to 107.2%. No quantitative bifenthrin was detected in pear of all kinds of treatments including the treatment sprayed 4 times until 7 days before harvest. This sensitive and selective method can be used to monitor the trace residual amounts of bifenthrin in pear in a quite low concentration level.
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spelling pubmed-70062882020-02-07 Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder Choi, Jeong-Heui Liu, Xue Kim, Hee-Kwon Shim, Jae-Han Toxicol Res Article This study was conducted to monitor the level of bifenthrin residues in pear sprayed with 2% bifenthrin wettable powder (WP) at the recommended rate at four different schedules prior to harvest. The target analyte was extracted with acetone, partitioned into dichloromethane, and then purified by florisil chromatographic column. The residue determination was performed on a DB-5 capillary column using GC with electron capture detector (ECD). Linearity of this method was quite good (r(2) = 0.9951) in the concentration ranged from 0.2 mg/kg to 10 mg/kg. Recovery test was carried out at two concentration levels, 0.2 mg/kg and 1.0 mg/kg, in three replicates, and their rates were from 82.9% to 107.2%. No quantitative bifenthrin was detected in pear of all kinds of treatments including the treatment sprayed 4 times until 7 days before harvest. This sensitive and selective method can be used to monitor the trace residual amounts of bifenthrin in pear in a quite low concentration level. Springer Singapore 2009-03-01 2009-03 /pmc/articles/PMC7006288/ /pubmed/32038818 http://dx.doi.org/10.5487/TR.2009.25.1.041 Text en © Korean Society of Toxicology 2009 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Choi, Jeong-Heui
Liu, Xue
Kim, Hee-Kwon
Shim, Jae-Han
Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder
title Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder
title_full Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder
title_fullStr Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder
title_full_unstemmed Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder
title_short Gas Chromatography Residue Analysis of Bifenthrin in Pears Treated with 2% Wettable Powder
title_sort gas chromatography residue analysis of bifenthrin in pears treated with 2% wettable powder
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7006288/
https://www.ncbi.nlm.nih.gov/pubmed/32038818
http://dx.doi.org/10.5487/TR.2009.25.1.041
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