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长光程与传统点式污染气体监测技术对比
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引用本文:李月清 朱彬 安俊琳.长光程与传统点式污染气体监测技术对比[J].南京信息工程大学学报,2011,(2):119~128
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李月清 朱彬 安俊琳 南京信息工程大学〖KG*2〗中国气象局大气物理与大气环境重点开放实验室,南京210044 li.yue.ching@gmail.com 
基金项目:国家重点基础研究发展计划项目(2009CB426313);国家自然科学基金(4087 5078);教育部博士点基金(20093228110003)
中文摘要:结合2类大气成分观测仪器的技术特点,对OPSIS AB DOAS系统和Thermo SCIENTIFIC EMS系统分别监测的南京郊区2009年冬季和2010年春季O3、NO2、SO2质量浓度数据进行了质量控制和分析对比,简要分析了这3种气体浓度的季节变化特征.对2009年秋季分别采用2种仪器观测的南京城区和郊区的污染情况进行了对比,分析了城郊差异.结果表明:2套系统对相同气体的测量结果相关性较好,DOAS系统的测量值受大气中水汽和气溶胶影响较大,普遍高于EMS系统,绝对值相差范围在14%~25%之间;南京郊区冬季大气中SO2和NO2质量浓度较高,O3质量浓度较低,春季反之;NO2质量浓度曲线与O3呈负相关;秋季城区NO2质量浓度较高,日变化呈双峰型,郊区呈单峰型;城郊O3日变化均呈单峰型,城区日变化幅度较大;SO2日变化在城区呈单峰型,在郊区呈双峰型.
中文关键词:DOAS系统  EMS系统  质量控制  对比分析
 
A comparative of long path and traditional point atmospheric pollutants monitoring techniques
Abstract:Observation of concentration of pollutants in atmosphere by OPSIS AB DOAS system and Thermo SCIENTIFIC EMS system was performed in rural areas of Nanjing during the winter of 2009 and the spring of 2010.Based on technical characteristics of the two systems,quality control of the observation data and comparison of the two systems were carried.The characteristics of seasonal variations of mass concentration of NO2,O3 and SO2 were analyzed.The comparison of pollution characteristics between urban and rural areas measured by the two different systems during the autumn of 2009 was also carried.Quite good correlation can be established between the observation data of the two systems.The observation data of DOAS system are influenced by water vapor and aerosols in atmosphere,so they are generally higher than that of EMS system,with a rate from 14% to 25%.The concentration of SO2 and NO2 are higher in winter,while that of O3 is lower,however,quite the reverse is true in spring.There is negative correlation between the curve of NO2 and O3.The concentration of NO2 in urban areas is higher than that in rural areas,and the diurnal variation shows two peaks,while that shows one peak in rural areas.The diurnal variation of O3 shows one peak in both urban and rural areas,but the former has a bigger variation range.The diurnal variation of SO2 shows one peak in urban areas and two peaks in rural areas.
keywords:DOAS system  EMS system  quality control  comparison
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