雨滴内酸化反応が酸性雨生成におよぼす影響

抄録

In order to investigate the effect of the drop-phase oxidation on the acid rain formation by co-washout of SO₂ (g) and H₂O₂ (g), a physico-chemical mathematical model which can consider the dissociation and oxidation process and the pollutant gas transfer rate from the air to the rain drop has been constructed. The results of the numerical simulation with the model show that the contribution of SO₄^2- due to the drop-phase oxidation of HSO₃^- by H₂O₂·H₂O greatly increases with decrese in drop size. This accords with frequent observations of very low pH drops in drizzle events.