镇江市典型区域2021-2022年大气降水测定及不同季节化学特征分析  

easurements and chemical characteristics over typical regions Of Zhenjiang in 2021-2022

作　　者：殷思敏 张磊 顾婷婷 任容 YIN Si-min;ZHANG Lei;GU Ting-ting;REN Rong(Zhenjiang Environmental Monitoring Center of Jiangsu Province,Zhenjiang,Jiangsu 212000;Zhenjiang Danyang Ecological Environment Bureau,Danyang,Jiangsu 212300)

机构地区：[1]江苏省镇江环境监测中心,江苏镇江212000 [2]镇江市丹阳生态环境局,江苏丹阳212300

出　　处：《污染防治技术》2023年第3期44-47,共4页Pollution Control Technology

基　　金：江苏省环境监测科研基金项目(编号2104);镇江市社会发展指导性科技计划项目(编号FZ2021046);镇江市政策引导类计划软科学研究(RK2022033)。

摘　　要：通过采集镇江市农业生产典型区域2021年3月-2022年2月期间138个大气降水样品,研究其监测方法、化学组分特征及探讨污染物来源。结果表明:采用离子色谱法阴阳离子双系统可实现降水中9种离子同时监测,节约人力和时间,试剂用量少且环保。通过化学组分特征分析,pH年均值(雨量加权)为6.18,化学组分NO^(-)_(3)/SO^(2-)_(4)年均值为1.03,NO^(-)_(3)和SO^(2-)_(4)致酸作用相当;NHSO^(+)_(4)/Ca^(2+)年均值为2.12,呈现季节性下降趋势。A total of 138 atmospheric precipitation samples of the typical agricultural production areas were collected from March 2021 to February 2022 in Zhenjiang.The monitoring method,chemical component characteristics and pollutant source were studied.The results show that the dual system of ion chromatography can monitor 9 kinds of ions in precipitation at the same time.It can save labor and time,less reagent consumption and environmental protection.According to the analysis of chemical components,the annual average value of pH(weighted by rainfall)is 6.18,the annual average value of chemical components NO^(-)_(3)/SO^(2-)_(4)is 1.03,the acid-inducing effect of NO^(-)_(3)and SO^(2-)_(4)is equivalent,and the annual average value of NH^(+)_(4)/Ca^(2+)is 2.12,showing a seasonal decreasing trend.

关 键 词：降水 离子色谱法 化学组分 

分 类 号：X831[环境科学与工程—环境工程]