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成都市冬季大气颗粒物组成特征及来源变化趋势

张彩艳 吴建会 张 普 张裕芬 吴 虹 史国良 冯银厂

张彩艳, 吴建会, 张 普, 张裕芬, 吴 虹, 史国良, 冯银厂. 成都市冬季大气颗粒物组成特征及来源变化趋势[J]. 环境科学研究, 2014, 27(7): 782-789.
引用本文: 张彩艳, 吴建会, 张 普, 张裕芬, 吴 虹, 史国良, 冯银厂. 成都市冬季大气颗粒物组成特征及来源变化趋势[J]. 环境科学研究, 2014, 27(7): 782-789.
ZHANG Cai-yan, WU Jian-hui, ZHANG Pu, ZHANG Yu-fen, WU Hong, SHI Guo-liang, FENG Yin-chang. Particulate Composition and Source Apportionment Trends in Winter in Chengdu[J]. Research of Environmental Sciences, 2014, 27(7): 782-789.
Citation: ZHANG Cai-yan, WU Jian-hui, ZHANG Pu, ZHANG Yu-fen, WU Hong, SHI Guo-liang, FENG Yin-chang. Particulate Composition and Source Apportionment Trends in Winter in Chengdu[J]. Research of Environmental Sciences, 2014, 27(7): 782-789.

成都市冬季大气颗粒物组成特征及来源变化趋势

基金项目: 国家自然科学基金项目(41205089,21207069,21207070)

Particulate Composition and Source Apportionment Trends in Winter in Chengdu

  • 摘要: 年冬季分别在成都市8个环境受体采样点采集PM10、PM2.5样品,同时采集颗粒物源类样品,分析上述样品质量浓度及多种无机元素、水溶性离子和碳组分的含量,以对这3 a冬季大气颗粒物浓度、特征组分、来源及变化趋势进行分析. 使用CMB-iteration模型对成都市中心城区的PM10、PM2.5进行来源解析. 结果表明: 成都市冬季ρ(PM10)在工业区最高,PM2.5污染呈现区域性特征;冬季PM10的主要来源有扬尘、二次硫酸盐、煤烟尘、二次硝酸盐和机动车尾气尘,上述5类源在2010─2012年的分担率分别为24%~29%、17%~22%、13%~16%、6%~12%、6%~11%;对PM2.5有重要贡献的源类有二次硫酸盐、扬尘、煤烟尘、二次硝酸盐和机动车尾气尘,这5类源在2010─2012年的分担率范围分别为25%~27%、19%~22%、12%~15%、11%~13%、8%~11%. 二次粒子、扬尘等是成都市大气颗粒物的主要污染源,其中扬尘、建筑水泥尘等以粗粒子为主的源类浓度贡献呈逐年下降趋势,而二次粒子等以细粒子为主的源类浓度贡献则逐年上升,成都市冬季大气细颗粒物污染加重.

     

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出版历程
  • 收稿日期:  2013-06-13
  • 修回日期:  2014-01-02
  • 刊出日期:  2014-07-25

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