Variation of Pesticides in a River flowing through Paddy Fields Area.
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概要
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Distribution and variation of 90 pesticides and 10 transformation products in river water were monitored during pesticide applied periods of three years (1995-1997) at a small river which flows cultivated area. Twenty-seven herbicides, 11 fungicides, 14 insecticides and five transformation products were detected from the river at 0.01-4.84μg·l<SUP>-1</SUP> in median. The pesticides increased in river water during and after their application. Namely, herbicides were detected during May to September and the magnitudes of them were increased through May to July, while fungicides and insecticides were detected during June to September and the magnitudes of them were increased through July to August. Runoff rates of aerial applied pesticides were estimated as 0.1% (etofenprox) to 7.4% (isoprothiolane) .
- 日本環境化学会の論文
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