Distribution of Selected Organic Chemicals in Water and Input from Several Sources in Tamagawa River.
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概要
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Eight survey studies on the concentrations of fifteen species of anthropogenic organic compounds, including pesticides, organophosphoric acid triesters (OPEs) and synthetic perfume ingredients were carried out in Tamagawa River for the period 1993-1995.<BR>During the study period, concentrations of pesticides, which are normally used in paddy fields, increased evidently in summer, while synthetic perfume ingredients showed a slight decrease in summer. Remarkable increases in concentrations of OPEs, perfume ingredients and some pesticides were observed invariably in the water at sites Haijima-bashi (S7) to Sekido-bashi (S10) along the course.<BR>Increased amounts of these compounds between the points S7 and S10 matched well with the estimated loads of the compounds from tributaries and discharges of sewage treatment plants and municipal wastewaters in the region. Estimated loads for some compounds, such as TCEP, TDCPP, TPP, CAT, Galaxolide and Musk ketone, from the discharge of sewage treatment plants were larger than their load from the major tributary.
- 日本環境化学会の論文
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