抄録
The issue of acid rain is one of the global environmental problems. It is required for solution of this problem that the mechanisms of acid rain are understood well In this paper, water qualities of acid rain were analyzed based on the raindrop size distribution. Although the ion concentration of rain is influenced by rain intensity, this analysis method is able to get rid of the influence. Therefore, the effect of air substance amount on rainwater quality can be considered separately. Results showed the relation between rainwater quality and potential ozone. Furthermore, the effects of air substance formation on ion concentration could be estimated for each season. It was also suggested that the amount of NO3 and NH4+ controlled the acid rain quality in rainy season of Japan.