| 摘要: |
| 于2014年12月31日—2015年1月12日，利用单颗粒气溶胶质谱仪对茂名市大气中PM2.5进行在线监测和分析。结果表明，茂名市大气颗粒物污染来源分布（颗粒数占比）分别为扬尘6%、工业工艺源10.9%、生物质燃烧14.7%、机动车尾气27.5%、燃煤23.4%、二次无机源7.7%和其他9.9%。 空气质量从重度污染转为优良天气过程中，机动车尾气的贡献率基本保持在20%以上，而燃煤占比从28.9%降至12.3%；空气质量从优良转为污染天气的过程中，工业工艺源、二次无机源、生物质燃烧、燃煤的占比增加，而机动车尾气占比不断下降。 |
| 关键词: 茂名市 可入肺颗粒物 源解析 单颗粒气溶胶质谱仪 |
| DOI： |
| 分类号:X832 |
| 基金项目:国家科技支撑计划基金资助项目（2014BAC21B01） |
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| Online Source Apportionment of Atmospheric PM2.5 in Maoming City |
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HUANG Shen1, PAN Yao wu1, LIU Guo sheng1, LI Mei2*, BI Yan ru31,2,3
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1. Maoming Environmental Monitoring Station, Maoming, Guangdong 525000, China;2. Jinan University, Guangzhou, Guangdong 510000, China;3. Guangzhou Hexin Analytical Instrument Co. Ltd., Guangzhou, Guangdong 510000, China
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| Abstract: |
| The atmospheric PM2.5 in Maoming was monitored and analyzed using the single particle aerosol mass spectrometer from December 31, 2014 to January 12, 2015. The results showed that the pollution sources of PM2.5 in this city contained 6% of dust particles, 10.9% of particles from industrial processes, 14.7% from biomass burning, 27.5% from vehicle exhaust, 23.4% from coal combustion, 7.7% from secondary inorganic sources, and 9.9% from other sources. When the air quality turned fine from heavily polluted conditions, the motor vehicle exhaust contributed to more than 20%, and the contribution of coal combustion decreased from 28.9% to 12.3%. When the air condition was changed from fine to heavily polluted, the contribution of industrial processes, secondary inorganic source, biomass combustion, and coal combustion to the production of PM2.5 were increased, while the contribution of the motor vehicle exhaust was decreased. |
| Key words: Maoming PM2.5 Source apportionment Single particle aerosol mass spectrometer |
