杭州市大气悬浮颗粒PM_(2.5)污染状况及化学组成特征分析  

Study on Pollution Status and Chemical Composition of Airborne Particles PM_(2.5) in Hangzhou City

作　　者：林丰妹[1] 焦荔[1] 包贞[1] 洪盛茂[1] 

机构地区：[1]杭州市环境监测中心站,浙江杭州310007

出　　处：《中国粉体技术》2011年第1期39-42,共4页China Powder Science and Technology

摘　　要：为了解杭州市大气悬浮颗粒物PM2.5污染状况及化学组成特征,2006年在杭州市内布设2个监测点位,按季节进行采样,并对悬浮颗粒物PM2.5中20种元素进行定量研究。结果表明:杭州市区大气中悬浮颗粒物PM2.5的年均质量浓度值为77.5μg/m3,其中S、Si、Ca、K等元素年平均质量浓度大于1.0μg/m3。元素Si、Al、Fe、Mg、V、K、Na、Ti、Mn、Ca、P、Cr、Ni主要来源于地壳,而元素Cl、Cu、Zn、Pb、As、Br、S、Se等主要来源于人为排放源。In order to study the pollution status and chemical composition of airborne particles PM2.5 in Hangzhou City, two stations were selected to process seasonal sampling in 2006, and the content of 20 kinds of elements in PM2.5 was analyzed quantitively. The results showed that the annual average mass concentration of PM2.5 was 77.5μg/m^3. The average mass concentrations of S, Si, Ca, K were greater than 1.0 μg/m^3.The elements such as Si, Al, Fe, Mg, V, K, Na, Ti, Mn, Ca, P, Cr, Ni originated from mainly the earth＇s crust, Cu, Zn, Br, Pb, As, S, Se originated from mainly artificial sources.

关 键 词：大气悬浮颗粒 污染状况 化学组成 

分 类 号：X831[环境科学与工程—环境工程]