Enantioselective Residue Dissipation of Hexaconazole in Cucumber (Cucumis sativus L.), Head Cabbage (Brassica oleracea L. var. caulorapa DC.), and Soils

文献类型： 外文期刊

第一作者： Wang, Xinquan

作者： Wang, Xinquan;Zhang, Hu;Xu, Hao;Wang, Xiangyun;Wu, Changxing;Li, Zhen;Wang, Qiang;Yang, Hongda

作者机构：

关键词： enantioselective dissipation;hexaconazole;cucumber;cabbage;soil

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： 0021-8561

年卷期： 2012 年 60 卷 9 期

页码：

收录情况： SCI

摘要： In this study, the enantioselective dissipation behavior of hexaconazole was investigated in cucumber fruit, head cabbage, and two different types of agricultural soils. The dissipation kinetics was determined by reverse-phase liquid chromatography-tandem mass spectrometry on a cellulose tris (3-chloro-4-methylphenylcarbamate) chiral column. Dissipation rates of hexaconazole enantiomers followed first-order kinetics; the residues of (+)-enantiomer decreased more rapidly than (-)-enantiomer in cucumber and head cabbage, resulting in relative enrichment of the (-)-form, while the two enantiomers showed similar degradation rates in the tested soils. These results indicate substantial enantioselectivity in the residue dissipation of hexaconazole enantiomers in cucumber and head cabbage; however, nonenantioselective dissipation was observed in the tested soils.

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