北京市大气细颗粒物PM_(2.5)的来源研究

朱先磊,张远航,曾立民,王玮 已出版文章查询
朱先磊,张远航,曾立民,王玮
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2000—2001年在北京联合大学化学学院、中国预防科学研究院和中国环境科学研究院3个采样点采集北京市PM2.5样品,并对其中无机元素、阴阳离子、有机碳(OC)、元素碳(EC)和有机物进行测定。以多环芳烃和部分无机组分为示踪物,利用CMB受体模型对PM2.5来源进行解析。结果表明,北京市PM2.5的主要来源为燃煤、扬尘、机动车排放、建筑尘、生物质燃烧、二次硫酸盐和硝酸盐及有机物。污染源贡献率随地域变化不大,燃煤、扬尘、生物质燃烧、二次硫酸盐和硝酸盐随季节变化比较明显。与1989—1990年解析结果相比,10年间PM2.5来源发生了一定变化。

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基金国家高技术研究发展计划项目(2003AA641040)

关键词PM_(2.5) 源解析 CMB受体模型 多环芳烃


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