大气臭氧被动监测方法适用性及影响因子相关性分析  

Applicability of passive monitoring methods for atmospheric ozone and its influencing factors

作　　者：孙旭 张红星[1,2] 姚余辉[1,2] 周伟奇[1,2] 欧阳志云 王效科[1] SUN Xu;ZHANG Hongxing;YAO Yuhui;ZHOU Weiqi;OUYANG Zhiyun;WANG Xiaoke(State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China;Beijing Urban Ecosystem Research Station,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China)

机构地区：[1]中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085 [2]中国科学院生态环境研究中心北京城市生态系统研究站,北京100085

出　　处：《环境化学》2021年第9期2747-2754,共8页Environmental Chemistry

基　　金：国家重点研发计划(2017YFE0127700)资助。

摘　　要：尽管臭氧(O_(3))被动监测方法在国内外已经有较长的开发和应用历史,但对其长期使用效果还存在一些疑问.于2012—2017年在北京城市生态系统研究站的3个空气质量监测点,对O_(3)被动采样分析监测方法和O_(3)分析仪在线主动监测方法进行了对比研究,得到了以下结论.被动监测和在线主动监测方法得到的O_(3)平均浓度具有很高的线性相关性(r^(2)>0.95),其回归方程斜率不同监测地点与总体间不存在显著差异性,并且受气象条件的影响也不显著;被动监测方法估算O_(3)浓度的关键参数—有效采样速率,在3个监测点间不存在显著差异;采用本地化采样速率计算的空气O_(3)浓度平均值,与主动监测结果的最大差别小于10.1%.被动监测方法得到的3个监测点之间的差异规律与主动监测方法得到的高度一致,很好反映了O_(3)浓度的空间变异.因此,在根据主动监测方法观测到的O_(3)浓度对被动采样方法获取的臭氧浓度进行准确修正后,被动监测方法可以非常好地应用于区域大气O_(3)污染多点网格化的监测中,为掌握大范围O_(3)浓度空间变化和空间扩散规律,开展O_(3)污染生态危害研究提供一种经济可靠的研究方法.Although ozone(O_(3))passive monitoring method has a long history of development and application at home and abroad,its effectiveness for long-term use is still in question sometimes.In three air quality monitoring sites in Beijing Urban Ecosystem Research Station from 2012 to 2017,this study compared the O_(3)passive sampling analysis method and the active monitoring method(O_(3)analyzer online),the results are as follows:(1)There was a high linear correlation(r2>0.95)between the average concentrations of O_(3)obtained by passive monitoring and active monitoring,no significant difference in the slopes of the correlationship between the three sites and the whole population,and not significantly influenced by meteorological conditions.(2)Effective sampling rate--a key parameter for estimating O_(3)concentration for passive monitoring method,there was no significant difference among the three monitoring sites;The maximum difference between the average O_(3)concentration calculated by local sampling rate and from the active monitoring is less than 10.1%.(3)The spatial variation of O_(3)concentration among the three monitoring sites was identical for both the passive monitoring method and the active monitoring method.Therefore,corrected according to the ozone concentration observed by the active monitoring method,the passive monitoring method can be well applied to the multi-point grid monitoring of regional atmospheric O_(3)pollution;Passive monitoring method provides an economic and reliable research method for the study of ecological hazards of O_(3)pollution.

关 键 词：臭氧 被动采样方法 有效采样速率 臭氧空间差异 

分 类 号：X831[环境科学与工程—环境工程]