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2014年北京奥体中心空气质量演变特征

高庆先 李亮 黄炳博 高文康 高文欧 苏布达 王学中

高庆先, 李亮, 黄炳博, 高文康, 高文欧, 苏布达, 王学中. 2014年北京奥体中心空气质量演变特征[J]. 环境科学研究, 2016, 29(4): 465-474.
引用本文: 高庆先, 李亮, 黄炳博, 高文康, 高文欧, 苏布达, 王学中. 2014年北京奥体中心空气质量演变特征[J]. 环境科学研究, 2016, 29(4): 465-474.
GAO Qingxian, LI Liang, HUANG Bingbo, GAO Wenkang, GAO Wen'ou, SU Buda, WANG Xuezhong. Analysis of Air Quality at Beijing Olympic Sports Center in 2014[J]. Research of Environmental Sciences, 2016, 29(4): 465-474.
Citation: GAO Qingxian, LI Liang, HUANG Bingbo, GAO Wenkang, GAO Wen'ou, SU Buda, WANG Xuezhong. Analysis of Air Quality at Beijing Olympic Sports Center in 2014[J]. Research of Environmental Sciences, 2016, 29(4): 465-474.

2014年北京奥体中心空气质量演变特征

基金项目: 国家环境保护公益性行业科研专项(201509001)

Analysis of Air Quality at Beijing Olympic Sports Center in 2014

  • 摘要: 利用中国环境监测总站发布的实时大气环境监测资料,选择北京国家奥林匹克体育中心(下称北京奥体中心)为研究对象,分析了2014年全年北京奥体中心空气质量演变特征. 结果表明:①2014年全年北京奥体中心首要污染污染物为PM2.5,其次是NO2,而PM2.5和PM10出现中度污染以上的污染事件主要集中在冬季和春末秋初;②PM2.5、PM10、SO2、NO2、O3和CO等主要污染物的年均质量浓度分别为89.75、141.12、21.83、64.26、48.60和1 210 μg/m3. 其中年均ρ(PM2.5)是GB 3095—2012《环境空气质量标准》二级标准限值(35 μg/m3)的2.6倍,年均ρ(PM10)也是其二级标准限值(70 μg/m3)的2.0倍,年均ρ(SO2)略高于其一级标准限值(20 μg/m3),而年均ρ(NO2)则高于其标准限值(40 μg/m3);③北京奥体中心全年逐月ρ(SO2)/ρ(NO2)都小于1.00,年均值为0.37,反映出北京目前硝酸型污染特征越来越明显;④针对不同污染等级下各类污染物质量浓度的分析结果显示,严重污染时ρ(PM2.5)和ρ(PM10)平均值分别高达324.75和494.98 μg/m3,分别是世界卫生组织(WHO)《空气质量准则》推荐24 h平均浓度准则值的13和10倍,其浓度如此之高会对人体健康造成严重危害;⑤ρ(PM2.5)年均24 h变化趋势表明,ρ(PM2.5)具有明显的日变化特征,出现2个峰值,高峰值出现在午夜时分(23:00—翌日01:00),次高峰值出现在上午(09:00—11:00),最低值出现在下午(15:00—17:00),次低谷值则出现在凌晨(05:00—07:00),说明ρ(PM2.5)除与混合层高度日变化特征密切相关外,还与人们的日常生活有一定联系.

     

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出版历程
  • 收稿日期:  2015-12-07
  • 修回日期:  2016-01-11
  • 刊出日期:  2016-04-25

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