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重庆主城区大气PM10及PM2.5来源解析

任丽红 周志恩 赵雪艳 杨 文 殷宝辉 白志鹏 姬亚芹

任丽红, 周志恩, 赵雪艳, 杨 文, 殷宝辉, 白志鹏, 姬亚芹. 重庆主城区大气PM10及PM2.5来源解析[J]. 环境科学研究, 2014, 27(12): 1387-1394.
引用本文: 任丽红, 周志恩, 赵雪艳, 杨 文, 殷宝辉, 白志鹏, 姬亚芹. 重庆主城区大气PM10及PM2.5来源解析[J]. 环境科学研究, 2014, 27(12): 1387-1394.
REN Li-hong, ZHOU Zhi-en, ZHAO Xue-yan, YANG Wen, YIN Bao-hui, BAI Zhi-peng, JI Ya-qin. Source Apportionment of PM10 and PM2.5 in Urban Areas of Chongqing[J]. Research of Environmental Sciences, 2014, 27(12): 1387-1394.
Citation: REN Li-hong, ZHOU Zhi-en, ZHAO Xue-yan, YANG Wen, YIN Bao-hui, BAI Zhi-peng, JI Ya-qin. Source Apportionment of PM10 and PM2.5 in Urban Areas of Chongqing[J]. Research of Environmental Sciences, 2014, 27(12): 1387-1394.

重庆主城区大气PM10及PM2.5来源解析

基金项目: 国家自然科学基金项目(41275135)

Source Apportionment of PM10 and PM2.5 in Urban Areas of Chongqing

  • 摘要: 为探讨重庆主城区4个季节大气PM10和PM2.5的主要来源,于2012年2—12月在重庆主城区的工业区、文教区和居住区5个环境监测点同步采集PM10及PM2.5样品,分析了无机元素、水溶性离子、有机碳和元素碳含量及其分布特征. 采集了重庆主城区土壤尘、建筑水泥尘、扬尘、移动源(包括机动车、施工机械及船舶)、工业源(包括固定燃烧源及工业工艺过程源)、生物质燃烧源及餐饮源等7类污染源,建立了重庆市本地化的污染源成分谱库. 利用CMB(化学质量平衡)受体模型及二重源解析技术分析了PM10及PM2.5的来源. 结果表明:重庆主城区大气中ρ(PM10)及ρ(PM2.5)的年均值分别为153.2和113.1 μg/m3,超过GB 3095—2012《环境空气质量标准》二级标准限值2倍以上. 大气PM10的主要来源为扬尘、二次粒子和移动源(贡献率分别为23.9%、23.5%和23.4%),大气PM2.5主要来源于二次粒子和移动源(贡献率分别为30.1%和27.9%).PM10和PM2.5的主要源类贡献率差别不大,表明研究区域内大气颗粒物污染控制应采取多源控制原则. 大气PM10来源的季节性变化特征表现为春季和秋季主要以扬尘为主、夏季和冬季主要以二次粒子为主.

     

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出版历程
  • 收稿日期:  2014-02-20
  • 修回日期:  2014-08-08
  • 刊出日期:  2014-12-25

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