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宜宾市PM25中碳组分的污染特性及来源分析

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尹寒梅, 陈军辉, 冯小琼, 徐雪梅, 姜涛, 钱骏, 叶宏. 宜宾市PM25中碳组分的污染特性及来源分析[J]. 环境化学, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
引用本文: 尹寒梅, 陈军辉, 冯小琼, 徐雪梅, 姜涛, 钱骏, 叶宏. 宜宾市PM25中碳组分的污染特性及来源分析[J]. 环境化学, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
shu
YIN Hanmei, CHEN Junhui, FENG Xiaoqiong, XU Xuemei, JIANG Tao, QIAN Jun, YE Hong. Pollution characteristics and source analysis of carbonaceous aerosol in PM2.5 in Yibin, China[J]. Environmental Chemistry, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
Citation: YIN Hanmei, CHEN Junhui, FENG Xiaoqiong, XU Xuemei, JIANG Tao, QIAN Jun, YE Hong. Pollution characteristics and source analysis of carbonaceous aerosol in PM2.5 in Yibin, China[J]. Environmental Chemistry, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
shu

宜宾市PM25中碳组分的污染特性及来源分析

  • 1.

    四川省环保科技工程有限责任公司, 成都, 610041;

  • 2.

    四川省环境保护科学研究院, 成都, 610041

Pollution characteristics and source analysis of carbonaceous aerosol in PM2.5 in Yibin, China

  • 1.

    Sichuan Province Environmental Protection Technology Engineering Co., Ltd., Chengdu, 610041, China;

  • 2.

    Sichuan Research Institute of Environmental Protection, Chengdu, 610041, China

  • 摘要: 2017年1月-12月期间在四川省宜宾市布置4个点位，共采集360个PM2.5样品膜，采用美国沙漠研究所DRI Model 2001型热光分析仪测定PM2.5样品中OC、EC的浓度值，应用OC/EC比值法对SOC进行了估算.结果表明，宜宾市PM2.5年均浓度为75.2 μg·m-3.OC、EC年均浓度分别为14.3 μg·m-3和4.30 μg·m-3，季节变化趋势为冬季>秋季>春季>夏季，OC占PM2.5比例为19.0%，为PM2.5重要组成部分.SOC年均浓度为4.70 μg·m-3，对OC贡献较大，在OC中占比为29.3%；SOC在OC中的占比春季>冬季≈秋季>夏季.进一步对OC1、OC2、OC3、OC4、EC1、EC2、EC3、和OPC进行主成分分析，结果表明机动车尾气、燃煤排放和生物质燃烧是宜宾市PM2.5中OC和EC的主要贡献源，可贡献PM2.5中碳组分的54.0%-69.0%.
    Abstract: Three hundred and sixty PM2.5 samples were collected in locations in Yibin,Sichuan Province, from January 2017 to December 2017. The concentrations of organic carbon (OC) and element carbon (EC) in PM2.5 samples were determined by DRI Model 2001 Thermo/Optical Carbon Analyzer. The secondary organic carbon(SOC)was then estimated by the OC/EC ratio. The results showed that the annual average concentration of PM2.5 in Yibin was 75.2 μg·m-3. The annual average concentrations of OC and EC were 14.3 μg·m-3 and 4.30 μg·m-3, respectively. Also, the OC and EC concentrations showed a seasonal variation in an order of winter > autumn > spring > summer. OC accounted for 19.0% of PM2.5, which was an important part of PM2.5. Annual average concentration of SOC was 4.70 μg·m-3, accounting for 29.3% of total OC. Note that the proportion of SOC in OC followed the order of spring > winter ≈ autumn > summer. Further principal component analysis (PCA) of OC1, OC2, OC3, OC4, EC1, EC2, EC3 and OPC showed that motor vehicle exhaust, coal-fired emissions and biomass burning were the main sources of OC and EC in PM2.5 in Yibin, contributing 54.0%-69.0% of the carbonaceous aerosol in PM2.5.
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出版历程
  • 收稿日期:  2018-06-15
  • 刊出日期:  2019-04-15
尹寒梅, 陈军辉, 冯小琼, 徐雪梅, 姜涛, 钱骏, 叶宏. 宜宾市PM25中碳组分的污染特性及来源分析[J]. 环境化学, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
引用本文: 尹寒梅, 陈军辉, 冯小琼, 徐雪梅, 姜涛, 钱骏, 叶宏. 宜宾市PM25中碳组分的污染特性及来源分析[J]. 环境化学, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
shu
YIN Hanmei, CHEN Junhui, FENG Xiaoqiong, XU Xuemei, JIANG Tao, QIAN Jun, YE Hong. Pollution characteristics and source analysis of carbonaceous aerosol in PM2.5 in Yibin, China[J]. Environmental Chemistry, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
Citation: YIN Hanmei, CHEN Junhui, FENG Xiaoqiong, XU Xuemei, JIANG Tao, QIAN Jun, YE Hong. Pollution characteristics and source analysis of carbonaceous aerosol in PM2.5 in Yibin, China[J]. Environmental Chemistry, 2019, 38(4): 738-745. doi: 10.7524/j.issn.0254-6108.2018061504
shu

宜宾市PM25中碳组分的污染特性及来源分析

  • 1.  四川省环保科技工程有限责任公司, 成都, 610041;
  • 2.  四川省环境保护科学研究院, 成都, 610041
  • 收稿日期:  2018-06-15

摘要: 2017年1月-12月期间在四川省宜宾市布置4个点位，共采集360个PM2.5样品膜，采用美国沙漠研究所DRI Model 2001型热光分析仪测定PM2.5样品中OC、EC的浓度值，应用OC/EC比值法对SOC进行了估算.结果表明，宜宾市PM2.5年均浓度为75.2 μg·m-3.OC、EC年均浓度分别为14.3 μg·m-3和4.30 μg·m-3，季节变化趋势为冬季>秋季>春季>夏季，OC占PM2.5比例为19.0%，为PM2.5重要组成部分.SOC年均浓度为4.70 μg·m-3，对OC贡献较大，在OC中占比为29.3%；SOC在OC中的占比春季>冬季≈秋季>夏季.进一步对OC1、OC2、OC3、OC4、EC1、EC2、EC3、和OPC进行主成分分析，结果表明机动车尾气、燃煤排放和生物质燃烧是宜宾市PM2.5中OC和EC的主要贡献源，可贡献PM2.5中碳组分的54.0%-69.0%.

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