Simultaneous investigation s on acid snow in Japan

冬季，从北海道到大陆的山形、新形和富山县采集了雪样。通过对酸性雪样品的化学特性分析，对实际情况进行了调查，得到了许多关于雪中过氧化氢浓度的研究结果，但关于过氧化氢浓度的报道很少。空气污染物与主要离子浓度、过氧化氢浓度、雪的pH值和雪藻等之间存在一定的关系，并观察到融雪水离子的选择性洗脱，但要掌握更清晰的关系还需进一步观察。

Snow samples were gathered from Hokkaido Island to Yamagata, Niigata and Toyama Prefectures in the Mainland in winter. By analyzing the chemical characteristics of these samples concerning an acid snow, the actual conditions were investigated.A lot of findings were obtained concerning the hydrogen peroxide concentration of snow that the reports on its concentration are very little. Some relations were seen among the air pollutant substances, the major ion concentrations, the hydrogen peroxide concentrations, the pH of snow and the snow algae, etc., and the selective elutions of the ion of snowmelt water were observed, though a further observation is necessary for the grasp of a clearer relation.