株洲市工业区大气中SO_2转化速率的研究  

Study on Oxidation Rate of SO_2 in ZhuzhouIndustrial Region,Hunan Province

作　　者：孙庆瑞[1] 陈旦华[1] 王美蓉[1] 娄福成 

机构地区：[1]北京大学技术物理系 [2]株洲市环境监测站

出　　处：《环境科学》1998年第3期11-13,17,共4页Environmental Science

基　　金：国家"八五"科技攻关项目

摘　　要：在湖南省株洲市工业区的下风向布点，同时测定大气中ＳＯ２的浓度、ＴＳＰ和＜０．２５μｍ细粒子中ＳＯ２－４的浓度．结果表明，大气中ＳＯ２浓度随着离污染源距离的增加迅速下降，和ＳＯ２相比，颗粒物中ＳＯ２－４浓度随距离的增加而降低的程度要慢得多．同步测定的ＳＯ２浓度和细粒子ＳＯ２－４浓度有显著的相关关系．根据风向、风速和新产生的细粒子中的ＳＯ２－４浓度及大气中ＳＯ２的浓度计算了株洲教育学院处ＳＯ２的转化速率，春季湿度大，ＳＯ２转化速率也大，为４．８％／ｈ，秋季湿度小，ＳＯ２的转化速率变低，为１．５％／ｈ．春季中路铺ＳＯ２转化速率为３．１％／ｈ．The sampling sites located downwind of Zhuzhou industrial region are Zhuzhou Education Institute,Zhonglupu and Heng Mountain.Gaseous SO_2,SO_4~2- in TSP and fine particle were measured at same time.The results point out that concentration of SO_2 decreased rapidly with increasing distance of sampling site from emission source,but SO_4~2- concentration in TSP and fine particle decreased much slowly than SO_2 soncentration. A marked correlativity between the concentration of SO_2 and SO_4~2- measured simultaneously was observed.Based on wind velocity,the concentrations of SO_2 and newformed SO_4~2- in fine particle the oxidation rate of SO_2 in Zhuzhou Education Institute was calculated.In spring,high oxidation rate of SO_2 to be 4.8%/h was examined with RH>90%.In fall,oxidation rate of SO_2 decreased to be 1.5%/h with about RH 50%.

关 键 词：转化速率 株洲市 二氧化硫 大气污染 

分 类 号：X513.02[环境科学与工程—环境工程]