抚顺市酸雨污染特征及影响因素分析

摘要

Based on the acid rain data from monitoring sites between 2006 and 2010, the variation characteristics and related factors of acid rain in recent five years are analyzed in this paper. The results show that the acidity reduced and the frequency of acid rain dropped in recent fives years. The frequency of acid rain increased when the continuous rainfall and heavy rainfall appeared. The precipitation pH value and the ratio of anion and cation are closely related. The precipitation pH value is negatively correlated with sulfur dioxide and positively correlated with dust. Acid rain is the combined result of sulfur dioxide, nitrogen dioxide and alkaline dust.%文章利用2006年-2010年抚顺市环境监测中心站酸雨监测点位的监测数据，分析了近五年来抚顺市酸雨的变化特征及其相关因素。结果表明：近五年来抚顺市的降水酸度减轻，酸雨频率下降；降水量大时酸雨频率增加；降水pH值与阴阳离子的比率密切相关；降水pH值与大气污染物二氧化硫呈负相关，与尘呈正相关，酸雨是由大气污染物二氧化硫、二氧化氮和碱性尘共同作用的结果。