Abstract
In this study, one box multimedia model to analyze the behavior of mercury and to assess the environmental risk was constructed and applied in Biwa lake and Yodo river basin. The amount of mercury emissions was estimated using PRTR data. The historical mercury emissions were estimated from the mercury usage data. The transboundary transport of mercury was also considered. The calculated value was compared with the measured values. The calculated value are well accorded with the measured value in every media. It was found that the multimedia model could reasonably predict mercury concentration in the atmosphere, solid, water, and also sediment.
