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In order to identify the chemicals that require a detailed risk evaluation, an environmental risk evaluation of 214 types of "PRTR Law Class 1" designated chemicals related to human health and ecosystem in Lake Biwa and Yodogawa Basin Area was performed using a simple multimedia model. Evaluating the environmental concentrations obtained from the OBM (One Box Model), acrolein was ranked as a chemical requiring a detailed evaluation due to its high chronic inhalation toxicity. Similarly, bis (2-ethylhexyl) phthalate, chlorothalonil, cypermethrin, carbary, xylene, and hydrazine were also deemed to require further comprehensive assessment due to their high levels of ecological toxicity. The re-evaluation using an SBM (Several Box Model), consisting of several connected "one-boxes" corresponding to sub-basins, showed that the risk levels using the concentration in water by OBM were underestimated in the Yodogawa down-stream region.
- 社団法人 環境科学会の論文
社団法人 環境科学会 | 論文
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