文章基本信息

标题：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
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作者：小野寺祐夫 ; 石倉俊治 ; 香川容子等
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1976
卷号：22
期号：4
页码：196-205
DOI：10.1248/jhs1956.22.196
出版社：The Pharmaceutical Society of Japan
摘要：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.