南充市2009～2017年酸雨污染情况分析

Analysis of Acid Rain Pollution in Nanchong From 2009 to 2017

指出了酸雨是当前环境重要污染物之一,对其进行观测与研究可为今后的治理工作提供坚实基础。根据南充市2009～2017年酸雨观测资料(酸雨变化特征、降水pH值、降水化学组成成分)对南充市区酸雨基本情况进行统计分析。结果表明:降水pH值呈逐年上升趋势,酸雨频率呈波动下降趋势;通过对酸雨成分分析发现,南充市酸雨污染源主要来自于机动车尾气排放,硫酸根离子和硝酸根离子的浓度均呈整体下降趋势;2009～2017年间,通过有效的治理工作,南充市市区酸雨污染情况得到了改善。

Acid rain is one of the most important pollutants in the environment.The observation and researchon acid rain provide a solid foundation for the future governance work.According to the acid rain observation data of Nanchong from 2009 to 2017,the variation characteristics of acid rain,the determination value of precipitation pH and the chemical composition of precipitation were analyzed statistically.The results show that the pH of precipitation is increasing year by year and the frequency of acid rain is fluctuating.The analysis of acid rain components shows that the acid rain pollution source in Nanchong is mainly from the tail gas emission of motor vehicles,and the concentration of sulfate ion and nitrate ion are decreasing.In 2009-2017,the acid rain pollution situation in the urban area of Nanchong City was improved through effective governance work.