Permethrin 異性体の土壌中における分解と移行

DOI Web Site 被引用文献2件
  • 金子 秀雄
    Research Department, Pesticides Division, Sumitomo Chemical Co., Ltd.
  • 大川 秀郎
    Research Department, Pesticides Division, Sumitomo Chemical Co., Ltd.
  • 宮本 純之
    Research Department, Pesticides Division, Sumitomo Chemical Co., Ltd.

書誌事項

タイトル別名
  • Degradation and Movement of Permethrin Isomers in Soil

抄録

Degradation and movement of (+)-trans and (+)-cis isomers of permethrin [3-phenoxybenzyl (±)-cis, trans-3-(2, 2-dichlorovinyl)-2, 2-dimethylcyclopropanecarboxylate] in soil were studied under laboratory conditions. When (+)-trans and (+)-cis isomers of permethrin labeled with 14C in the alcohol or acid moiety were applied to two types of soil (Kodaira and Azuchi) at the rate of 1.0ppm and held at 25°C in the dark under upland conditions, both isomers were rapidly decomposed with the half-lives of 6 to 12 days. The degradation rate of (+)-trans isomer was slightly faster than that of (+)-cis isomer in both soils. Major degradation products from both isomers were 3-(4′-hydroxyphenoxy)benzyl-3-(2, 2-dichlorovinyl)-2, 2-dimethylcyclopropanecarboxylate, 3-phenoxybenzyl alcohol, 3-phenoxybenzoic acid, 3-(2, 2-dichlorovinyl)-2, 2-dimethylcyclopropanecarboxylic acid, and its hydroxylation derivatives.<br>Although both (+)-trans and (+)-cis-permethrin hardly moved through the soil with water, the degradation products such as 3-phenoxybenzoic acid, 3-(4′-hydroxyphenoxy)benzyl-3-(2, 2-dichlorovinyl)-2, 2-dimethylcyclopropanecarboxylate were slightly eluted with water.

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