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首页> 外文期刊>RSC Advances >Stereoselective degradation behaviour of carfentrazone-ethyl and its metabolite carfentrazone in soils
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Stereoselective degradation behaviour of carfentrazone-ethyl and its metabolite carfentrazone in soils

机译：甲草胺酮及其代谢物甲草酮在土壤中的立体选择性降解行为

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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.
机译：在好氧条件下，研究了三种区域土壤中的甲草胺酮-乙基及其代谢物甲草酮对映体的立体选择性环境行为。在有氧条件下，在江西红壤，吉林黑壤和安徽稻田中，对芬太尼-乙基及其代谢产物芬太尼对映体的降解行为存在明显的立体选择性差异。安徽省水稻土，吉林黑土和江西红土中芬太尼-乙基对映体的EF值分别为0.67、0.65和0.57。在三种类型的土壤中，芬太尼对映体的EF值分别为0.75、0.80和0.76。在吉林土壤中未观察到对映纯的芬太尼-乙基和芬太尼对映体的双向手性倒置。结果，土壤中的R-（+）-芬太尼-乙基和S-（+）-芬太尼将优先降解，而S-（α）-芬太尼-乙基和R-（α）-芬太尼则富集。从手性的角度来看，本文发现的结果可为克芬特酮-乙基的风险评估提供更科学的指导。

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