Knudsen cell and smog chamber study of the heterogeneous uptake of sulfur dioxide on Chinese mineral dust

查看全文 作　　者：Li [1,2]Zhou;Weigang [1]Wang;Yanbo [1]Gai;Maofa [1]Ge

机构地区：[1]Beijing National Laboratory for Molecular Science (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Institute of Chemistry, Chinese Academy of Sciences;[2]Beijing National Laboratory for Molecular Science (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Peking University

出　　处：《Journal of Environmental Sciences》索引2014年第26卷第12期,共11页

基　　金：supported by the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(No.XDB05010400);the National Basic Research Program(973)of Ministry of Science and Technology of China(No.2011CB403401);the National Natural Science Foundation of China(Major Program:21190052)(Nos.40925016,41173112) 摘　　要：The heterogeneous uptake processes of sulfur dioxide on two types of Chinese mineral dust(Inner Mongolia desert dust and Xinjiang sierozem)were investigated using both Knudsen cell and smog chamber system.The temperature dependence of the uptake coefficients was studied over a range from 253 to 313 K using the Knudsen cell reactor,the initial uptake coefficients decreased with the increasing of temperature for these two mineral dust samples,whereas the steady state uptake coefficients of the Xinjiang sierozem increased with the temperature increasing,and these temperature dependence functions were obtained for the first time.In the smog chamber experiments at room temperature,the steady state uptake coefficients of SO2decreased evidently with the increasing of sulfur dioxide initial concentration from 1.72×1012to 6.15×1012mol/cm3.Humid air had effect on the steady state uptake coefficients of SO2onto Inner Mongolia desert dust.Consequences about the understanding of the uptake processes onto mineral dust samples and the environmental implication were also discussed. 关键词：二氧化硫吸收过程矿尘雾室中国异质性温度依赖性摄取系数

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Knudsen cell and smog chamber study of the heterogeneous uptake of sulfur dioxide on Chinese mineral dust

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