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Stereoselective degradation behaviour of carfentrazone-ethyl and its metabolite carfentrazone in soils

文献类型： 外文期刊

作者： Duan, Jinsheng 1 ; Gao, Beibei 1 ; Dong, Xu 2 ; Sun, Mingna 2 ; Shen, Yang 3 ; Zhang, Zhaoxian 1 ; Gao, Tongchun; Wang 1 ;

作者机构： 1.Nanjing Agr Univ, State & Local Joint Engn Res Ctr Green Pesticide, Coll Plant Protect, Dept Pesticide Sci, Nanjing 210095, Jiangsu, Peoples R China

2.Anhui Acad Agr Sci, Key Lab Agroprod Safety Risk Evaluat Hefei, Inst Plant Protect & Agroprod Safety, Hefei 230031, Anhui, Peoples R China

3.Anhu

期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）

ISSN： 2046-2069

年卷期： 2018 年 8 卷 63 期

页码：

收录情况： SCI

摘要： The stereoselective environmental behaviour of carfentrazone-ethyl and its metabolite carfentrazone enantiomer in three types of soil were studied under aerobic conditions. Under aerobic conditions, significant stereoselective difference in the degradation behaviour of carfentrazone-ethyl and its metabolite carfentrazone enantiomer was observed in Jiangxi red soil, Jilin black soil and Anhui paddy soil. The EF values of the carfentrazone-ethyl enantiomers in Anhui paddy soil, Jilin black soil, and Jiangxi red soil were 0.67, 0.65 and 0.57, respectively. The EF values of the carfentrazone enantiomer in the three types of soil were 0.75, 0.80 and 0.76. No bidirectional chiral inversion of enantiopure carfentrazone-ethyl and carfentrazone enantiomers was observed in Jilin soil. As a result, R-(+)-carfentrazone-ethyl and S-(+)-carfentrazone in soil would be preferentially degraded, while S-(-)-carfentrazone-ethyl and R-(-)-carfentrazone were enriched. The results found in this paper could provide more scientific guidance for the risk assessments of carfentrazone-ethyl from a chiral perspective.

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