重庆市主城区二次有机碳气溶胶污染特征研究  

Pollution Characteristics of Secondary Organic Carbon in PM_(2.5) in Chongqing

作　　者：陈敏[1] 周志恩[1] 张丹[1] 李振亮[1] 孟小星[2] 吕平江 

机构地区：[1]重庆市环境科学研究院,重庆401147 [2]重庆市环境监测中心,重庆401147

出　　处：《环境监测管理与技术》2016年第5期43-47,共5页The Administration and Technique of Environmental Monitoring

基　　金：重庆市科委攻关基金资助项目(2013cstc-jbky-01609);重庆市科委自然科学基金资助项目(2015cstc-jbky-01605)

摘　　要：为研究重庆市大气PM_(2.5)中二次有机气溶胶污染特征,于2013年1—12月运用URG-3000ABC型中流量颗粒物采样仪连续同步采集重庆市主城区大气PM_(2.5)样品,选取OC/EC比值对PM_(2.5)中的SOC污染进行估算,结果表明,该市主城区PM_(2.5)中SOC年平均质量浓度为12.5μg/m3,占OC质量浓度的50.0%,占PM_(2.5)质量浓度的10.1%,SOC质量浓度为冬季>秋季>夏季>春季。机动车排放是SOC前体物的主要来源。In order to study pollution characteristics of secondary organic aerosols, PM2 5 samples were collected by URG - 3000ABC from January to December 2013 in urban area of Chongqing, and OC/EC ratio method was chosen to estimate SOC in PM2 5. Results showed that the concentrations of SOC was 12.5 jxg/m3, which account for 50. 0% of OC and 10. 1% of PM2 5. The concentration of SOC was highest in winter, then in autumn and summer, and lowest in spring. Vehicle emissions were the main source of precursor material of SOC.

关 键 词：PM25 二次有机碳气溶胶 污染特征 重庆 

分 类 号：X513[环境科学与工程—环境工程]