典型矿业城市大气颗粒物水溶性离子分布特征  

Distribution Characteristics of Water-soluble Ions in Aerosol Particles in A Typical Mining City

作　　者：欧金萍 郑刘根[2] 杨叶[2] OU Jin-ping;ZHENG Liu-gen;YANG Ye(Institute of Physical Science and Information Technology,Anhui University,Hefei,Anhui 230601,China;School of Resources and Environmental Engineering,Anhui University,Anhui Province Engineering Laboratory for Mine Ecological Remediation,Hefei,Anhui 230601,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,安徽合肥230601 [2]安徽大学资源与环境工程学院,安徽省矿山生态修复工程实验室,安徽合肥230601

出　　处：《环境监测管理与技术》2020年第5期23-27,共5页The Administration and Technique of Environmental Monitoring

基　　金：国家自然科学基金资助项目(41373108,41702176);淮北矿业集团有限责任公司科技基金资助项目(HK-2018-1)。

摘　　要：利用2014年7月和2015年1月在淮南市不同功能区采集的大气颗粒物样品,分析其水溶性离子时空和粒径分布特征。结果表明:夏季和冬季粗、细粒子中总水溶性离子质量浓度均值分别为(13.45±4.53)μg/m^3、(27.81±17.65)μg/m^3和(12.87±8.37)μg/m^3、(85.08±35.41)μg/m^3。淮南市大气颗粒物中主要的水溶性离子为Ca^(2+)、NO^-_3和SO■。冬季各功能区PM_(2.5)中总水溶性离子质量浓度普遍高于夏季。大气颗粒物中水溶性离子主要来源于土壤源、工业污染及二次转化,冬季二次污染源主要以流动源污染为主,而夏季流动源和固定源污染贡献接近。In this paper,the atmospheric particulate samples were collected from different functional areas in Huainan in July 2014 and January 2015 for analyzing the spatial and temporal distribution characteristics of water-soluble ions and particle size.The results showed that the average mass concentrations of water-soluble ions in PM 2.5~10 and PM 2.5 were(13.45±4.53)μg/m 3 and(27.81±17.65)μg/m 3 in summer,(12.87±8.37)μg/m 3 and(85.08±35.41)μg/m 3 in winter,respectively.The main water-soluble ions in atmospheric particulates were Ca 2+、NO-3 and SO 2-4.The mass concentration of total water-soluble ions in PM 2.5 in each functional area in winter was higher than that in summer.Soils,industrial emissions and secondary transformation were the main sources of water-soluble ions in atmospheric particulates.Mobile source was the main secondary pollution source in winter.Mobile source and stationary source had similar contribution in summer.

关 键 词：水溶性离子 PM2.5 PM2.5~10 粒径分布 污染源 淮南市 

分 类 号：X513[环境科学与工程—环境工程]