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首页> 外文期刊>Journal of pesticide science >Degradation of esfenvalerate in illuminated water-sediment system
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Degradation of esfenvalerate in illuminated water-sediment system

机译：照明水沉淀系统中乙草戊酸酯的降解

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摘要

The aerobic aquatic soil metabolism of esfenvalerate [(2S,alpha S)-alpha-cyano-3-phenoxybenzyl 2-(4-chlorophenyl)-3-methylbutyrate] was examined in two Japanese pond water-sediment systems in relation to the effects of illumination and formulation on degradation profiles.Esfenvalerate was rapidly partitioned from the water phase to the bottom sediments with dissipation half-lives of less than 1 day and either the application of formulation or illumination slightly accelerated the partition.The main degradate of esfenvalerate was 3-phenoxybenzoic acid via ester cleavage both under dark and light conditions.The epimerization at the alpha-cyanobenzyl carbon significantly proceeded to form the corresponding [2S,alpha R] isomer in both water and sediment.The possible degradate via photo-induced decarboxylation was scarcely detected in the water phase of the illuminated water-sediment systems.
机译：在两个日本池塘水沉淀系统中研究了依斯芬戊酸酯[（2S，αS）-α-氰基-3-苯氧基苄基2-（4-氯苯基）-3-甲基丁酸酯]的好氧水土代谢乙草胺戊酸酯从水相到底部沉积物快速分配，耗散半衰期少于1天，不论是施用制剂还是光照都可以加速分配，乙草胺戊酸酯的主要降解为3-苯氧基苯甲酸在黑暗和明亮条件下均可通过酯裂解。α-氰基苄基碳上的差向异构体显着进行，在水和沉积物中均形成相应的[2S，αR]异构体。几乎没有检测到可能通过光诱导的脱羧而降解在照明的水沙系统的水相中。

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