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Determination of Methoxyfenozide, Chromafenozide and Tebufenozide Residues in Agricultural Commodities Using HPLC-UVD/MS  

Lee, Su-Jin (Dept. of Herbal Medicine Resource, Kangwon National University)
Kim, Young-Hak (Dept. of Herbal Medicine Resource, Kangwon National University)
Hwang, Young-Sun (Dept. of Herbal Medicine Resource, Kangwon National University)
Kwon, Chan-Hyeok (National Institute of Food and Drug Evaluation)
Do, Jeong-A (National Institute of Food and Drug Evaluation)
Im, Moo-Hyeog (Korea Food and Drug Administration)
Lee, Young-Deuk (Division of Life and Environmental Science, Daegu University)
Choung, Myoung-Gun (Dept. of Herbal Medicine Resource, Kangwon National University)
Publication Information
The Korean Journal of Pesticide Science / v.14, no.1, 2010 , pp. 37-48 More about this Journal
Abstract
The diacylhydrazine insecticides, methoxyfenozide, chromafenozide and tebufenozide are new-generation insecticides. These insecticides induce premature molting and cause the death of insects by mimicking their hormone. Also, these insecticides have already been widely used for vegetables planting in worldwide. Highperformance liquid chromatography (HPLC) is the most widely used procedure for determination of each compound residues in crops. However, simultaneous analysis method of these diacylhydrazine insecticides was not reported. The purpose of this study is to develop a simultaneous determination procedure of methoxyfenozide, chromafenozide and tebufenozide residue in crops using HPLC-UVD/MS method. These insecticide residues were extracted with acetone from representative samples of five raw products which comprised hulled rice, soybean, apple, pepper, and Chinese cabbage. The extract was diluted with saline water, and dichloromethane partition was followed to recover these insecticides from the aqueous phase. Florisil column chromatography was additionally employed for final cleanup of the extracts. The analytes were quantitated by HPLCUVD/MS, using a $C_{18}$ column. The crops were fortified with each insecticide at two levels per crop. Mean recoveries ranged from 89.0 to 104.8% in five representative agricultural commodities. The coefficients of variation were less than 3.9%. Quantitative limits of methoxyfenozide, chromafenozide and tebufenozide were 0.04 mg/kg in crop samples. A HPLC-UVD/MS with selected-ion monitoring was also provided to confirm the suspected residues. The proposed simultaneous analysis method was reproducible and sensitive enough to determine the residues of methoxyfenozide, chromafenozide and tebufenozide in agricultural commodities.
Keywords
methoxyfenozide; chromafenozide; tebufenozide; residue; HPLC-UVD/MS;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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