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长春市大气SO2、O3和NOx的变化特征及来源

周勤迁 张世春 陈卫卫 赵红梅 童全松 王毅勇

周勤迁, 张世春, 陈卫卫, 赵红梅, 童全松, 王毅勇. 长春市大气SO2、O3和NOx的变化特征及来源[J]. 环境科学研究, 2014, 27(7): 768-774.
引用本文: 周勤迁, 张世春, 陈卫卫, 赵红梅, 童全松, 王毅勇. 长春市大气SO2、O3和NOx的变化特征及来源[J]. 环境科学研究, 2014, 27(7): 768-774.
ZHOU Qin-qian, ZHANG Shi-chun, CHEN Wei-wei, ZHAO Hong-mei, TONG Quan-song, WANG Yi-yong. Pollution Characteristics and Sources of SO2, O3 and NOx in Changchun[J]. Research of Environmental Sciences, 2014, 27(7): 768-774.
Citation: ZHOU Qin-qian, ZHANG Shi-chun, CHEN Wei-wei, ZHAO Hong-mei, TONG Quan-song, WANG Yi-yong. Pollution Characteristics and Sources of SO2, O3 and NOx in Changchun[J]. Research of Environmental Sciences, 2014, 27(7): 768-774.

长春市大气SO2、O3和NOx的变化特征及来源

基金项目: 中国科学院战略性先导科技专项(XDB05020304);吉林省自然科学基金项目(20130101085JC)

Pollution Characteristics and Sources of SO2, O3 and NOx in Changchun

  • 摘要: 为研究长春市采暖期大气污染物的污染水平及其随时间的变化特征,于2012年1—6月通过在线监测仪获取了大气中ρ(SO2)、ρ(O3)和ρ(NOx),利用HYSPLIT(混合型单粒子拉格朗日综合轨迹模式)后向轨迹模型结合地面气象资料,初步分析了该市大气污染物的可能来源及传输过程. 结果表明:观测期间ρ(SO2)和ρ(NOx)的日均值分别为(25.0±21.6)和(54.4±34.0)μg/m3,ρ(O3)最大8 h平均值为(85.0±26.2)μg/m3,ρ(SO2)、ρ(NOx)和ρ(O3)的变化范围分别为2.3~131.0、17.6~183.7和31.0~173.3 μg/m3;其中ρ(O3)日均值超过GB 3095—2012《环境空气质量标准》二级标准限值的时间为2 d,ρ(SO2)和ρ(NOx)均未超过二级标准限值,但ρ(SO2)日均值在采暖期超过GB 3095—2012一级标准限值的时间为23 d,占采暖期的24%. 采暖期ρ(SO2)日变化为双峰型,峰值出现在06:00和20:00左右,而在非采暖期表现为单峰型,峰值出现在08:00左右;ρ(O3)表现为单峰型,峰值出现在13:00─15:00;ρ(NOx)在采暖期表现为双峰型,而在非采暖期表现为单峰型. 对观测期间72 h内HYSPLIT后向轨迹模拟结果和气象数据的分析表明,长春市大气污染主要受本地源的影响,偏西气流易对污染物造成积累,而偏东气流有利于污染物扩散.

     

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出版历程
  • 收稿日期:  2013-10-09
  • 修回日期:  2014-04-25
  • 刊出日期:  2014-07-25

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