江苏省酸雨控制区内城市酸雨污染变化特征分析  

Analysis of variation characteristics of acid rain pollution in the acid rain control area of Jiangsu Province

作　　者：杨雪[1] 张祥志[1] 汤莉莉[1] 张璘[1] 秦玮[1] 陆维青 茅晶晶[1] YANG Xue;ZHANG Xiang -zhi;TANG Li -li;ZHANG Lin;QIN Wei;LU Wei -qing;MAO Jing- jing(Jiangsu Environmental Monitoring Centre, Nanjing ,Jiangsu 210036, China)

机构地区：[1]江苏省环境监测中心,江苏南京2100368

出　　处：《污染防治技术》2017年第5期25-27,共3页Pollution Control Technology

基　　金：国家自然科学基金重大研究计划(D0512/91544231)

摘　　要：对2011—2015年江苏省酸雨控制区降水监测数据进行统计,探讨分析近年来江苏省酸雨污染特征及变化情况。研究表明:近年来江苏省酸雨控制区内酸雨污染多为弱酸性酸雨,其次为酸性酸雨,重酸性酸雨不足2成,少有严重酸性酸雨;降水酸度总体有减弱趋势,除无锡和泰州2市降水酸度有所增强,其余城市降水酸度均有不同程度减弱;酸雨发生率最高发生在2012年,达42.9%,其余年份酸雨发生率变化趋势平稳,不超过40%;降水中SO2-4当量浓度逐年递减,NO-3当量浓度处于波动状态,SO2-4/NO-3的比值呈降较为明显下降态势,江苏省酸雨污染特征正由硫酸型向硫酸与硝酸混合型过渡。This paper analyzed the precipitation monitoring data of acid rain control area in Jiangsu Province in the year from2011 to 2015,the characteristics and variation of acid rain pollution in Jiangsu province were studied. The study showed that： In recent years,the level of acid rain pollution of acid rain control area in the province were mostly weak acid rain,secondly were the acid rain,heavy acid rain were rare; the acidity of precipitation tended to decrease except for Wuxi and Taizhou city; the highest acid rain frequency occurred in 2012 was 42. 9%,the rest of the year acid rain frequency changed in trend,no more than 40%; the concentration of SO2-4 in precipitation decreased year by year,the concentration of NO-3 were in fluctuations state,the value of SO2-4/NO-3 obviously tended to decrease. The acid rain pollution from sulfuric acid type oriented was transforming to mixture of sulfuric acid and nitric acid pollution gradually.

关 键 词：酸雨 降水酸度 酸雨发生率 SO2-4/NO-3 江苏省 

分 类 号：X131.1[环境科学与工程—环境科学]