重庆市春季大气中PM_(10)元素污染特征  

Element Pollution Feature of PM_(10) in Spring of Chongqing

作　　者：张丹[1] 张卫东[2] 蒋昌潭[2] 赵琦[2] 叶堤[2] 

机构地区：[1]西南大学化学化工学院,重庆400715 [2]重庆市环境科学研究院,重庆400020

出　　处：《环境科学与技术》2007年第5期38-40,共3页Environmental Science & Technology

基　　金：重庆市环保局项(目环科字2006第(04)号)

摘　　要：为研究重庆市春季可吸入颗粒物中元素组成特征,于2006年4月在重庆市主城8区和缙云山对照点采集环境中PM10样品,用X-射线荧光光谱法测定其中24个元素的含量。选取16种元素,分为地壳元素和污染元素两大类进行体积分数、雨水洗脱作用和富集因子的分析。分析结果表明:与对照点相比,重庆市主城区PM10元素污染相对较重,且具有煤烟型硫化物污染的特点;污染元素浓度在晴天和阴雨天变化显著,对照点雨水对PM10洗脱作用较为明显;无论是主城区还是对照点,污染元素的富集因子较高,其中Se、S、Br和Pb的富集现象最为显著。The sample of PM10 was collected during April 2006 at sampling sites of Chongqing urban and one site for compared.24 elements were determined by X-ray fluorescence,and 16 elements were selected and classified in two kinds including earth elements and pollution related elements.Results indicated that the degree of PM10 pollution in the urban was more serious comparing with that in Jingyun Hill,with characteristics of coal smoke pollution of SOx.In sunny and rainy days the concentration of pollution related elements were changed obviously,and the function of rain cleanout was more visible in the suburb.In both urban and suburb,most pollution elements were enriched in the PM10,especially for Se,S,Br and Pb.

关 键 词：可吸入颗粒物 雨水洗脱 富集因子 

分 类 号：X513[环境科学与工程—环境工程]