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杭州市灰霾与非灰霾日不同粒径大气颗粒物来源解析

吴 琳 沈建东 冯银厂 毕晓辉 焦 荔 刘双喜

吴 琳, 沈建东, 冯银厂, 毕晓辉, 焦 荔, 刘双喜. 杭州市灰霾与非灰霾日不同粒径大气颗粒物来源解析[J]. 环境科学研究, 2014, 27(4): 373-381.
引用本文: 吴 琳, 沈建东, 冯银厂, 毕晓辉, 焦 荔, 刘双喜. 杭州市灰霾与非灰霾日不同粒径大气颗粒物来源解析[J]. 环境科学研究, 2014, 27(4): 373-381.
WU Lin, SHEN Jian-dong, FENG Yin-chang, BI Xiao-hui, JIAO Li, LIU Shuang-xi. Source Apportionment of Particulate Matters in Different Size Bins during Hazy and Non-Hazy Episodes in Hangzhou City[J]. Research of Environmental Sciences, 2014, 27(4): 373-381.
Citation: WU Lin, SHEN Jian-dong, FENG Yin-chang, BI Xiao-hui, JIAO Li, LIU Shuang-xi. Source Apportionment of Particulate Matters in Different Size Bins during Hazy and Non-Hazy Episodes in Hangzhou City[J]. Research of Environmental Sciences, 2014, 27(4): 373-381.

杭州市灰霾与非灰霾日不同粒径大气颗粒物来源解析

Source Apportionment of Particulate Matters in Different Size Bins during Hazy and Non-Hazy Episodes in Hangzhou City

  • 摘要: 在2011年典型灰霾和非灰霾天气下,采集了杭州市不同粒径的大气颗粒物样品,测定并分析各粒径段颗粒物的质量浓度及其化学成分;同时采集并分析了主要污染源排放的颗粒物样品,通过CMB(化学质量平衡)模型进行源解析. 结果表明:灰霾天气下,二次粒子是杭州市各粒径段颗粒物的首要贡献源,其对≤1.1、>1.1~3.3、>3.3~5.8和>5.8~10μm粒径段的颗粒物贡献率分别为60.4%、62.2%、54.8%和46.5%. 在一次排放源中,机动车尾气是≤1.1和>1.1~3.3μm粒径段颗粒物的重要来源,贡献率分别为13.8%和12.2%;城市扬尘是>3.3~5.8μm粒径段颗粒物的重要来源,贡献率达到16.0%;而建筑施工尘是>5.8~10μm粒径段颗粒物的重要来源,贡献率为14.2%. 非灰霾天气下,随着颗粒物粒径的增加,二次粒子的贡献率显著下降,对≤1.1μm粒径段颗粒物的贡献率为42.7%,而对>5.8~10μm粒径段颗粒物的贡献率仅为15.5%;机动车是各粒径段颗粒物的重要贡献源,贡献率均在20%以上;煤烟尘是≤3.3μm细粒径段颗粒物的重要贡献源类,贡献率为22.0%;城市扬尘是>3.3~5.8μm粒径段颗粒物的重要来源,贡献率为18.3%;建筑施工尘依然是>5.8~10μm粒径段颗粒物的重要来源,贡献率为21.4%.

     

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出版历程
  • 收稿日期:  2013-05-14
  • 修回日期:  2014-01-05
  • 刊出日期:  2014-04-25

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