沈阳冬季大气颗粒物化学成分及其来源的分析  

A Study on trace Chemical Composition and Sources of atmospheric particles in winter in Shenyang

作　　者：洪也[1] 马雁军[1] 刘宁微[1] 

机构地区：[1]中国气象局沈阳大气环境研究所,辽宁沈阳110016

出　　处：《环境科学与技术》2010年第S1期292-296,共5页Environmental Science & Technology

基　　金：2008年公益性行业(气象)科研专项(GYHY20080620);国家自然科学基金项目资助(40575067);国家自然科学基金(40975084);国家科研院所社会公益研究专项项目资金(2005DIB2J111)

摘　　要：为了解沈阳城区大气颗粒物的元素特征及来源,2009年1月14日至2月2日,用安德森分级撞击式采样器在沈阳市城区进行了大气气溶胶分级采样,并用电感耦合等离子体质谱仪(ICP-MS)对细颗粒物样品中35种元素进行分析。结果表明:大气颗粒物中粗粒子占总元素浓度比重为54.9%,与2008年北京同时期所占比重相似。元素Fe、La、K和Mn分别代表不同来源的四种谱分布类型,富集因子分析表明,沈阳冬季的燃煤,城市交通、建筑扬尘、春节期间烟花爆竹的释放及工业释放是其主要来源。A study has been carried out on trace elemental concentration and sources of atmospheric particles from 14,January to 2,February,2009 in Shenyang. The Concentrations of 35 trace elements which were determined of collected samples were analyzed by Inductively Coupled Plasma Mass Spectrometry(ICP-MS,Thermo-Elemental Corp) . Based on enrichment factors analysis,the elemental compositions and sources of atmospheric particles were discussed in this work. The results indicate that coarse particle account for 54.9% percent of the atmospheric particles which is the same as that of Beijing in the same time. element Fe,La,K and Mn presents 4 kinds of spectrum distribution which is from different sources. Enrichment factors analysis suggested that anthropogenic sources including coal combustion,urban traffic emissions,suspension of building construction dusts and chemical industry all play important roles besides natural emission sources during this period.

关 键 词：大气颗粒物 痕量元素 富集因子 来源 沈阳 

分 类 号：X513[环境科学与工程—环境工程]