著者
小野寺 祐夫 石倉 俊治 香川 容子 田中 恵子
出版者
公益社団法人日本薬学会
雑誌
衛生化学 (ISSN:0013273X)
巻号頁・発行日
vol.22, no.4, pp.196-205, 1976-08-31
被引用文献数
10 2

As fundamental studies on chemical changes of organophosphorus pesticides during chlorination of the water, fate of 11 kinds of P=S type and 2 kinds of P=O type pesitcides in the chlorinated water was examined by thin-layer and gas chromatographic methods. Most of these pesticides examined were found to undergo a chemical change in water containing free chlorine as small as 0.1 ppm. Therefore, at a higher concentration of free chlorine, the P=S compounds were easily oxidized to P=O analogs in the water. However, P=O analogs were not detected from Dimethoate and Ethion in the water, while Dipterex, a P=O compound, underwent dehydrochlorination and rearrangement to form DDVP. Among the P=O derivatives formed from P=S compounds, Malaoxon, Paraoxon, and Diazoxon were comparatively stable in the water but Methyl paraoxon, Sumioxon, and Phosvel-oxon were markedly hydrolyzed and formed phenolic compounds in the water. Oxidation of P=O compounds with free chlorine was hardly influenced by the presence of magnesium, calcium and ferric ions less them 1.0 ppm but suppressed by a ferrous ion.

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こんな論文どうですか? 塩素処理による水中有機物の化学変化(第1報)P=S型有機リン系農薬からP=O型の生成(小野寺祐夫ほか),1976 http://id.CiNii.jp/PRlTL

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