农业环境科学学报2025，Vol.44Issue(2)：353-363,11.DOI:10.11654/jaes.2024-0212
手性杀菌剂苯醚甲环唑在蚯蚓-土壤体系中的立体选择性吸收、消除和转化
Stereoselective absorption,elimination,and transformation of chiral fungicide difenoconazole in an earthworm-soil system
摘要
Abstract
This study was conducted to comprehensively explore the enantioselective environmental behavior of the triazole fungicide difenoconazole in the earthworm-soil system.Laboratory experiments were performed to study the bioaccumulation,elimination,and degradation pathways of chiral difenoconazole.Four stereoisomers of difenoconazole were separated and determined by SFC-MS/MS.Significant enantioselectivity was observed during the accumulation phase,and(2R,4R)-difenoconazole and(2R,4S)-difenoconazole were preferentially accumulated in earthworms.Five transformation products(TPs)were identified by UHPLC-QTOF/MS,namely 3-chloro,4-hydroxy difenoconazole,CGA-205374,CGA-205375,3-chloro,4-hydroxy CGA-205375,and CGA-71019(1,2,4-triazole).The main transformation pathways observed for difenoconazole in earthworms and soil were hydrolysis and hydroxylation.Furthermore,the chiral transformation product,3-chloro,4-hydroxy difenoconazole,was generated with significant enantioselectivity.关键词
苯醚甲环唑/对映选择性/生物富集/转化产物/降解路径Key words
difenoconazole/enantioselectivity/bioaccumulation/transformation product/degradation pathway分类
资源环境引用本文复制引用
王加福,付纪强,王济世,张艳伟,耿岳,贺泽英..手性杀菌剂苯醚甲环唑在蚯蚓-土壤体系中的立体选择性吸收、消除和转化[J].农业环境科学学报,2025,44(2):353-363,11.基金项目
国家自然科学基金面上项目(42177394) （42177394）
中央级科研院所基本科研业务费专项(2023-jbkyywf-hzy) National Natural Science Foundation of China(42177394) （2023-jbkyywf-hzy）
Central Public-Interest Scientific Institution Basal Research Fund(2023-jbkyywf-hzy) （2023-jbkyywf-hzy）
