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合肥市郊夏季PM10浓度及其与能见度的关系

张敬巧 王淑兰 高健 柴发合 张萌 王杰 刘建国

张敬巧, 王淑兰, 高健, 柴发合, 张萌, 王杰, 刘建国. 合肥市郊夏季PM10浓度及其与能见度的关系[J]. 环境科学研究, 2012, 25(8): 864-869.
引用本文: 张敬巧, 王淑兰, 高健, 柴发合, 张萌, 王杰, 刘建国. 合肥市郊夏季PM10浓度及其与能见度的关系[J]. 环境科学研究, 2012, 25(8): 864-869.
ZHANG Jing-qiao, WANG Shu-lan, GAO Jian, CHAI Fa-he, ZHANG Meng, WANG Jie, LIU Jian-guo. Observation Study on PM10 Concentration and Its Relationship with Visibility in Hefei Suburban Area in Summer[J]. Research of Environmental Sciences, 2012, 25(8): 864-869.
Citation: ZHANG Jing-qiao, WANG Shu-lan, GAO Jian, CHAI Fa-he, ZHANG Meng, WANG Jie, LIU Jian-guo. Observation Study on PM10 Concentration and Its Relationship with Visibility in Hefei Suburban Area in Summer[J]. Research of Environmental Sciences, 2012, 25(8): 864-869.

合肥市郊夏季PM10浓度及其与能见度的关系

基金项目: 国家重点实验室开放基金项目(41005065)

Observation Study on PM10 Concentration and Its Relationship with Visibility in Hefei Suburban Area in Summer

  • 摘要: 年8—9月在合肥市郊对ρ(PM10)进行了观测,并分析了其中9种水溶性离子(NO2-、Cl-、NO3-、SO42-、NH4+、Ca2+、Na+、Mg2+、K+)质量浓度. 结果表明:采样期间该地区ρ(PM10)日均值为78.9 μg/m3,9种水溶性离子的平均质量浓度为18.93 μg/m3,占ρ(PM10)的26.6%,表明水溶性组分是PM10的重要组成之一. SO42-、NO3-、NH4+和Ca2+是主要的阴、阳离子,日均质量浓度分别为8.14、4.81、3.46和1.33 μg/m3. 不同RH(相对湿度)下PM10对能见度的影响不同,RH小于80%时,二者呈显著的线性负相关〔R(相关系数)为-0.80〕;RH大于80%时,二者呈指数负相关(R为-0.48). 离子间相关性分析显示,PM10中水溶性离子的主要结合方式为(NH4)2SO4、NH4HSO4、NH4NO3、KCl及K2SO4. 采样期间ρ(NO3-)/ρ(SO42-)平均值为0.59,说明在该地区固定源对水溶性组分的贡献大于移动源. 另外,扬尘也是PM10重要来源之一.

     

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出版历程
  • 收稿日期:  2012-01-16
  • 修回日期:  2012-04-19
  • 刊出日期:  2012-08-25

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