雨水に含まれる数種農薬の消長

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献4件 参考文献30件

書誌事項

タイトル別名
  • Several Pesticide Residues in Rainwater in Eastern Japan, 1989-1992
  • 雨水に含まれる数種農薬の消長-1989～1992年の東日本の例
  • ウスイ ニ フクマレル スウシュ ノウヤク ノ ショウチョウ -1989 19

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Residue amounts of 9 pesticides in rainwater had been investigated monthly from 1989 to 1992 in 9 prefectures of Eastern Japan. The year basis residues in rainwater of pesticides applied in paddy field were molinate>iprofenfos>simetryn (not detected), depending on vapor pressure and formulation type. Molinate was detected still in winter, suggesting its long-term persistence in the environment. Fenitrothion was detected evenly as 20-100μg/m2/year. This was resulted from large shipment especially from dust formulation, aerial application in each prefecture, and long half-life periods in air. Malathion and diazinon with extremely short-term residues in the environment were detected less than 10μg/m2/year in most part, but fenobucarb was detected more than 100μg/m2/year in 3 prefectures. Isoprothiolane was detected more than 300μg/m2/year in Tochigi tested, because these latter two pesticides were used in large quantities by ground and aerial applications. Pesticides in rainwater were mostly detected in summer with the residue peak at the main application periods. However, fenitrothion, malathion and diazinon applied to various crops through the year were slightly detected in winter as well. Although the falling amounts of pesticides was not clearly related to the prefectural shipment amounts, from these results detected periods of pesticides were corresponding to application season. It was concluded that pesticides residues in rainwater were detected only around application areas, and few pesticides were diffused widely in the air.

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