摘要
本文根据2016-2022年福建省宁德环境监测中心站降水监测资料,对宁德市中心城区酸雨变化特征进行分析。结果表明,2016-2022年宁德市中心城区pH年均值和年酸雨出现频率呈现下降趋势,但变化不明显;除了2019年为非酸雨区外,其他年份均属于轻酸雨区;降水电导率自2019年开始迅速下降,之后几年基本都在2 mS/m左右浮动,说明降水的污染程度逐渐转好;影响降水的主要阴离子是SO_(4)^(2-)和NO_(3)^(-),目前宁德市中心城区酸雨类型已是硫酸与硝酸并重型。最后,提出对策和建议。
This paper according to the precipitation monitoring data of Fujian Ningde Environmental Monitoring Center Station from 2016 to 2022,the change characteristics of acid rain in the central urban area of Ningde are analyzed.The results show that the annual average pH and annual acid rain frequency in the central urban area of Ningde show a downward trend from 2016 to 2022,but the change is not obvious;Except for 2019 as a non acid rain area,all other years belong to light acid rain areas;The conductivity of precipitation has been rapidly decreasing since 2019,and has fluctuated around 2 mS/m for the following years,indicating that the pollution level of precipitation is gradually improving;The main anions affecting precipitation are SO_(4)^(2-)and NO_(3)^(-).At present,the acid rain type in the central city of Ningde is the combination of sulfuric acid and nitric acid.Finally,countermeasures and suggestions were proposed.
作者
刘素青
Liu Suqing(Ningde Environmental Monitoring Center Station,Ningde 352000,China)
出处
《皮革制作与环保科技》
2023年第17期167-169,共3页
Leather Manufacture and Environmental Technology
关键词
酸雨
变化趋势
对策建议
宁德市
acid rain
change trend
countermeasures and suggestions
Ningde City
