Residues of the herbicide fenoxaprop-P-ethyl, its agronomic safener isoxadifen-ethyl and their metabolites in rice after field application

Pest Management Science
Luigi Lucini, Gian Pietro Molinari

Abstract

Fenoxaprop-P-ethyl is a herbicide used on cereals and in particular on rice, the degradation of which leads to several relevant metabolites. The herbicide is used together with an agronomic safener such as isoxadifen-ethyl, which also generates some metabolites. The present work was aimed at developing and validating an analytical method for the determination of the above parent compounds and their main metabolites in the edible fractions of rice. Parent compounds were extracted in acetonitrile and determined by gas chromatography with a mass spectrometer detector, while metabolites were extracted in acetonitrile and analysed by liquid chromatography tandem mass spectrometry. The method was validated through recovery tests in rice straw, grain and plant: accuracy was in the range 76-86% and 90-103% for parent compounds and metabolites respectively. Precision, as relative standard deviation, was in the range 3-11% and 6-17% for parent compounds and metabolites respectively. The limit of detection was 0.01 mg kg(-1) for each analyte, while the limit of quantification was set at 0.05 mg kg(-1). The analytical method is suitable for quantitative determination of each analyte considered in rice commodities.

References

Feb 22, 2005·Journal of Hazardous Materials·Liyan SongYoucai Zhao
Apr 19, 2007·Journal of Agricultural and Food Chemistry·Y BakkaliR De Prado
Aug 10, 2007·Journal of Agricultural and Food Chemistry·Jing LinZhuang Wang

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Citations

May 3, 2011·Bulletin of Environmental Contamination and Toxicology·Xiaoxu ChenWenming Li
Jun 5, 2013·Environmental Toxicology and Pharmacology·Joanna BernasinskaAneta Koceva-Chyla
Aug 29, 2018·Pest Management Science·Ya-Ting HeQing-Yuan Sun
Oct 23, 2019·Journal of Food Protection·Shishir Tandon
Sep 5, 2020·Journal of Agricultural and Food Chemistry·Ke-Liang GuoFei Ye
Feb 4, 2012·Environmental Science & Technology·John D Sivey, A Lynn Roberts

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