Fenpyroximate の容器内畑土壌における代謝分解
書誌事項
- タイトル別名
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- Degradation of Fenpyroximate in Upland Soils under Laboratory Conditions
- Fenpyroximateの容器内畑土壌における代謝分解〔英文〕
- Fenpyroximate ノ ヨウキナイ ハタドジョウ ニ オケル タイシャ
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抄録
Degradation of [pyrazole-3-14C]-or [benzyl ring-14C(U)]fenpyroximate (tert-butyl (E)-α-[1, 3-dimethyl-5-phenoxypyrazol-4-ylmethyleneamino-oxy]-p-toluate) was studied in Ehime (diluvial) and Kanagawa (volcanic ash) soils under upland laboratory conditions. Soils (25g) fortified with 14C-fenpyroximate (1.30-2.12ppm) were incubated at 25°C for 112 days in the dark. The compound degraded with half-lives of 34.3-49.7 days in the Ehime soil and of 26.3-35.6 days in the Kanagawa soil. In the soil extracts, twelve degradation products were identified by TLC-co-chromatography, with authentic compounds. Major degradation products were (E)-4-[(1, 3-dimethyl-5-phenoxypyrazol-4-yl)-methyleneaminooxymethyl]benzoic acid (5), 1, 3-dimethyl-5-phenoxypyrazole-4-carboxylic acid (12) and 1, 3-dimethyl-5-phenoxypyrazole-4-carbonitrile (9). In both soils, 14C-carbon dioxide liberated from [pyrazole-14C]fenpyroximate during the 112 days accounted for 16.9-17.1% of the applied radioactivity, and that from [benzyl-14C]fenpyroximate for 51.2-64.6%. Fenpyroximate degradation and CO2 evolution were negligible in sterilized soils during the incubation. It was assumed that fenpyroximate degraded through hydrolysis of tert-butyl ester, isomerization or cleavage of the oxime ether structure, N-demethylation, oxidation of the methyl group at the 3-position on the pyrazole ring and hydroxylation of the phenoxy ring, and that it finally mineralized to CO2 and/or bound to soil organic matter.
収録刊行物
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- 日本農薬学会誌(Journal of Pesticide Science)
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日本農薬学会誌(Journal of Pesticide Science) 18 (1), 67-75, 1993
日本農薬学会
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詳細情報 詳細情報について
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- CRID
- 1390282680186597632
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- NII論文ID
- 110001712636
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- NII書誌ID
- AN00196227
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- ISSN
- 03851559
- 13490923
- 1348589X
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- NDL書誌ID
- 3813539
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- データソース種別
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- JaLC
- IRDB
- NDL
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- NDL-Digital
- CiNii Articles
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- 使用不可