文献类型： 外文期刊
作者： Li, Minghui 1 ; Li, Puyu 1 ; Wang, Lin 1 ; Feng, Mengyuan 1 ; Han, Lijun 1 ;
作者机构： 1.China Agr Univ, Coll Sci, Beijing 100193, Peoples R China
2.Xinjiang Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Xinjiang 830091, Peoples R China
3.Henan Agr Univ, Coll Plant Protect, Zhengzhou 450002, Henan, Peoples R China
关键词： fipronil;metabolites;peanut;residues;QuEChERS;LC-MS/MS
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： In this study, a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method was established for the extraction and cleanup of fipronil and its three metabolites (fipronil solfone, sulfide, and desulfinyl) in peanut kernel, shell, straw, seedling, and soil samples, and liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used for analysis. The average recoveries were 66-116% at the level of 0.001-0.1 mg/kg with the RSD <19%, and the limit of detection was 0.3 ng/g for all matrices. The dissipation experiment results demonstrated that fipronil dissipated more rapidly in peanut seedling than in soil, with half-lives of <1 day in peanut seedling and 32-57 days in soil depending on the soil pH. The final residues at harvest of peanut kernels were all below 0.02 mg/kg, whereas in peanut shell and straw, the total highest residues were 0.99 and 0.30 mg/kg, respectively. Fipronil-desulfinyl and fipronil-sulfone were the highest residue metabolites in peanut plant (seedling and straw) and soil samples, respectively.
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