【摘要】 庐山春季高山降水和云雾水均已严重酸化,所采样品的PH值全部小于5.6,主要酸性物质是硫酸,硝酸占次要地位;云雾水中离子浓度高于降水,且酸度强于降水;对不同相态降水的比较表明,固相降水组成比雨水高2—6倍,但PH值比雨水高0.6 而氧化性物质H₂O₂在降水中浓度高于云雾水中浓度,液相降水中浓度大于固相降水. 根据研究结果推测,降水酸化是局地大气污染物的清除与酸性物质长距离输送共同作用的结果,且以长距离输送为主.更多还原

【Abstract】 The precipitation and cloud water in spring at the top of Lushan was acidified seriously, the pH value of all samples was below 5. 6, the major acid was sulfuric. The concentration of ions in cloud water was higher than that in precipitation. The concentration in solid precipitation was higher than that in liquid precipitation by 2-6 factors, the pH value of solid precipitation was higher by 0. 6. But H2O2 concentration in precipitation is higher than that in cloud water and it is higher in liquid precipitation than that in solid precipitation. It is speculated that the acidification of precipitation was caused by the integration of long-distance transport and scavenging of local pollutants.更多还原