大气监测中DOAS与点式仪器一致性分析  

Intercomparison of commercial DOAS system and traditional point monitoring techniques in ambient air monitoring

作　　者：孙杰 孙天乐 何凌燕[2] 曾立武[2] 邓彦阁[2] 刘芮伶[2] 

机构地区：[1]深圳市环境监测中心站,广东深圳518049 [2]北京大学深圳研究生院环境与能源学院,广东深圳518055

出　　处：《中国测试》2012年第5期10-14,共5页China Measurement & Test

基　　金：国家自然科学基金项目(40805049)

摘　　要：在监测环境空气中SO2、NO2、O3和TOL(甲苯)等项目时,为进一步探讨DOAS仪器与国内现行的点式仪器之间监测结果的一致性,以及高湿降雨不利气象条件对DOAS仪器监测结果的影响,该文开展了DOAS仪器与传统点式仪器的比对实验。结果表明:DOAS仪器监测SO2、NO2、O3和TOL等项目与点式仪器监测结果之间具有较好的一致性和相关性;深圳高湿降雨天气对DOAS仪器的监测结果无显著影响,与点式仪器的监测结果仍具有较好的一致性和相关性;TOL作为典型的高活性芳香烃类化合物,在环境空气挥发性有机物(VOCs)中占有较高的比例,可以利用TOL监测结果间接评估VOCs的污染趋势。To evaluate the performance of differential optical absorption spectroscopy （DOAS） system motoring SO2,NO2,O3 and toluene as well as the influence of rainfall to it, a field based intercomparison study of a commercial DOAS instrument and different point-sample monitoring techniques was conducted in Shenzhen in 2011. A good agreement between the DOAS and point- sample monitoring techniques data was found for SO2,NO2,O3 and toluene. In heavy rain case, the observation data from DOAS and point-sample monitoring techniques got a quite good correlation, indicating that the humid rainy weather in Shenzhen had no significant effect on the performance of the DOAS system. As a typical high activity kind of aromatic hydrocarbons, toluene is the major components of volatile organic compounds （VOCs） in the ambient air. Thus, toluene measured by DOAS systems can be used to reflect the pollution level of VOCs in atmosphere.

关 键 词：环境监测 DOAS仪器 一致性 降雨 甲苯 

分 类 号：X831[环境科学与工程—环境工程] TM930.114[电气工程—电力电子与电力传动]