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| 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 PM2.5in Chongqing |
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| DOI： |
| 中文关键词: PM2.5 二次有机碳气溶胶 污染特征 重庆 |
| 英文关键词: PM2.5 SOC Pollution characteristics Chongqing |
| 基金项目: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） |
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| 中文摘要: |
| 为研究重庆市大气PM2.5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PM2.5样品，选取OC/EC 比值对PM2.5中的SOC污染进行估算，结果表明，该市主城区PM2.5中SOC年平均质量浓度为12.5 μg/m3，占OC质量浓度的50.0%，占PM2.5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。 |
| 英文摘要: |
| In order to study pollution characteristics of secondary organic aerosols, PM2.5samples 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 μg/m 3，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. |
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