沈阳PM2.5中金属元素污染特征及来源分析  

Pollution characters and source analysis of metal elements in PM_(2.5) of Shenyang

作　　者：李晶[1] 曲健[1] 王男[1] 郑兴宝[1] 李哲 Li Jing;Qv Jian;Wang Nan;Zheng Xingbao;Li Zhe(Shenyang City Environmental Monitoring Center Station,National Environmental ProtectionKey Laboratory of Atmospheric Organic Pollutants Monitoring and Analysis,Shenyang 110169,China)

机构地区：[1]沈阳市环境监测中心站,国家环境保护大气有机污染物监测分析重点实验室,沈阳110169

出　　处：《环保科技》2018年第6期25-30,共6页Environmental Protection and Technology

基　　金：沈阳市科技计划项目(F16-156-9-00)

摘　　要：为了解沈阳市细颗粒物中金属元素的浓度水平及其来源,于2015年11月至2016年11月使用中流量采样器开展了手工监测连续采样。采用滤膜称重法检测PM_(2.5)浓度,电感耦合等离子体质谱法(ICP-MS)分析PM_(2.5)中14种金属元素总量,并采用富集因子法和因子分析法分析元素污染特征及其来源。结果表明,观测期间PM_(2.5)中主要金属元素冬季、春季、秋季均以Al占主导地位,分别占所有金属元素总和的74. 4%、68. 2%和49. 0%;夏季则以Zn元素占主导地位,约占所有金属元素总和的53. 6%。综合相关性分析和主成分分析结果表明,沈阳PM_(2.5)中金属元素主要来源于燃煤、机动车排放和工业排放以及地面扬尘。In order to understand the concentration level and source of metal elements in fine particles in Shenyang City,manual continuous sampling was carried out from November2015to November2016using a medium flow sampler.The concentration of PM2.5was determined by filter weighing method.The total amount of14metal elements in PM2.5was analyzed by inductively coupled plasma mass spectrometry(ICP-MS).The elemental pollution characteristics were analyzed by enrichment factor method and factor analysis.The source shows that the main metal elements in PM2.5during the observation period are dominated by Al in winter,spring and autumn,accounting for74.4%,68.2%and49.0%of the total of all metal elements respectively.In summer,Zn is dominant,accounting for53.6%of the total of all metal elements.The results of comprehensive correlation analysis and principal component analysis show that the metal elements in PM2.5of Shenyang are mainly derived from coal combustion,motor vehicle emissions and industrial emissions as well as ground dust.

关 键 词：PM2.5 金属元素 富集因子 因子分析 沈阳 

分 类 号：X513[环境科学与工程—环境工程]