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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

作者: Wang, Xinquan 1 ; Zhang, Hu 1 ; Xu, Hao 1 ; Wang, Xiangyun 1 ; Wu, Changxing 1 ; Yang, Hongda; Li, Zhen 2 ; Wang, Qian 1 ;

作者机构: 1.Zhejiang Acad Agr Sci, Inst Qual & Standard Agroprod, MOA Key Lab Pesticide Residue Detect, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Qual & Standard Agroprod, MOA Key Lab Pesticide Residue Detect, St

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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