杭州城市灰尘中Pb、Cd的粒径分布特征  

Size Dtstributing Characteristic of Pb,Cd in Urban Dust of Hangzhou

作　　者：田晖[1] 周小锋[1] 姚超英[1] 

机构地区：[1]杭州职业技术学院,浙江杭州310002

出　　处：《广东微量元素科学》2007年第6期19-25,共7页Trace Elements Science

摘　　要：研究分析了杭州城市灰尘样品中Ph、Cd的粒径分布特征。结果表明，灰尘中微量元素的富集与环境排放有关，灰尘来源区的自然背景值也影响灰尘中Ph、Cd的含量；Pb主要集中在中细粒径（55—105μm）灰尘中，Cd在粗粒级和细粒级样品中都有分布；细粒级灰尘较易吸附Ph、Cd，且占灰尘总体质量的比例较大（40％），在环境污染治理中应引起重视。The distributing character of Pb, Cd in different size dust of Hangzhou city was studied. The result shows that the enrichment of microelement is related with the environment release, the background value of the dust resource area also directly influents the content of the Pb, Cd in the dust ; Pb is mainly centralized in small size dust （55 ～ 105 μm）, while high content of Cd distributed in both middle and small size dust. Small size dust is easy to absorb Pb and Cd. Since it occupied most part of the total dust volume （40%）, so much more attention should be paid during the treatment of the dust pollution.

关 键 词：微量元素 灰尘 粒径分布 

分 类 号：X513[环境科学与工程—环境工程]