分布型雨天時汚濁解析モデルによる自動車排ガス由来汚染物質ベンゾ(a)ピレンの自動車道での堆積・流出挙動解析

概要

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Several types of distributed-type model are commonly used for analysis of accumulation and washoff behavior of pollutants in the sewer during a rainy day. We try to analyze accumulation and washoff behavior of micro-pollutants using the distributed-type model. The micro-pollutants analyzed in this study was benzo(a)pyrene. An automobile exhaust gas is the main source of benzo(a)pyrene. The distributed-type model was useful for understanding of accumulation and washoff behavior of benzo(a)pyrene. In particular, the estimation of the accumulation behavior along the roadside was good. However, there is a limit in using the model for planning an effective measures against water pollution of benzo(a)pyrene. We need to develop an original distributed-type model that can lead to the realization of the effective measures.