南京市酸雨污染变化趋势分析  

Analysis of Historical Change of Acid Rain Pollution Trend of Nanjing

作　　者：金鑫[1] 闻欣[1] 谢馨[1] 郁晶[1] 陆芝伟[1] 

机构地区：[1]南京市环境监测中心站,江苏南京210013

出　　处：《环境监测管理与技术》2015年第4期65-68,共4页The Administration and Technique of Environmental Monitoring

基　　金：国家高技术研究发展("八六三")计划"基于物联网的城市空气环境调控技术研究及应用"基金资助项目(SS2012AA062903)

摘　　要：基于1991—2013年南京市降水监测数据,采用Spearman秩相关系数,分析了该市酸雨污染的变化情况,以及阴阳离子组分特征与变化趋势。结果表明,自1991年以来,南京市酸雨频率有所上升,降水p H值显著下降,酸雨污染有加重趋势;硫氧化物仍是该市降水酸化的主要因素,而其致酸作用逐年减弱,NO-3的致酸作用逐年加强;来源于化工行业的氯化物对降水的污染状况得以改善,来源于碱性颗粒物的钙对酸雨的中和作用逐年减弱。Based on the precipitation monitoring results in Nanjing City from 1991 to 2013,the variation of acid rain and the changing trend of ion composition and ion concentration were analyzed through Spearman correlation coefficient. The results showed that since 1991,the frequency of acid precipitation has been rising and the p H value shows marked drop in precipitation,which indicates that the acid rain pollution is on the rise. The main factor of acid precipitation is still sulfur oxides in Nanjing City,but its action on acid rain is decreasing year by year while the action of NO-3is rising. Pollution of precipitation caused by chlorides,which come from the chemical industry,is improved. The neutralization effect of calcium,which comes from alkaline particulate matter,is weakened year by year.

关 键 词：酸雨 秩相关系数 变化趋势 南京市 

分 类 号：X517[环境科学与工程—环境工程]