Observation of atmospheric nitrous acid with DOAS in Beijing, China

查看全文 作　　者：QIN Min XIE Pin-hua LIU Wen-qing LI Ang DOU Ke FANG Wu LIU Jian-guo ZHANG Wei-[1]jun

机构地区：[1]Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei230031, China

出　　处：《Journal of Environmental Sciences》索引2006年第18卷第1期,共7页

基　　金：TheK eyProjectofChineseA cadem yofSciences (N o.K JCX 2-SW -H08)andtheH i-TechResearchandD evelopm entProgram (863)ofChina(No.2002A A641020) 摘　　要：Measurements of nitrous acid(HONO) and nitrogen dioxide(NO2) in Beijing City have been performed by means of a developed differential optical absorption spectroscopy(DOAS) system based on photodiode array(PDA), during the autumn of 2004. HONO and NO2 were simultaneously identified by their characteristic absorption bands in the spectral region between 337 nm and 372 nm with high sensibility and time resolution. The concentrations of HONO exhibit obviously diurnal variation with a nocturnal maximum and a daytime minimum. The highest HONO value up to 11.8 ?滋g/m3 was observed during the night of 2/3 September. Possible sources of the observed HONO were discussed. Good correlation to NO2 indicates that NO2 is a main source component. The measurement also shows direct emission of HONO is an important source in strongly polluted urban area. 关键词：北京大气环境环境污染大气化学 DOAS 氮酸

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Observation of atmospheric nitrous acid with DOAS in Beijing, China

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