南华大学学报（自然科学版）2016，Vol.30Issue(3)：110-114,118,6.
衡阳市中心城区冬季雾霾天PM2.5中重金属污染初探
Primary Study on Pollution of Heavy Metals in PM2.5 under Haze-fog Weather in Hengyang City During Winter
摘要
Abstract
To study pollution characteristics and sources of heavy metals in PM2.5 under haze-fog weather in Hengyang city,atmospheric particulate matters in Hengyang city were investigated during 2014~2015 winter.The concentration of PM2.5 were measured by filter membrane weighting method and microwave digestion and atomic absorption spectroscopy (AAS)method were used for analyzing 6 heavy metals (Pb,Cd,Cu,Cr,Ni and Fe) in PM2.5,pollution characteristics of heavy metals in PM2.5 were analyzed by enrichment factor method.The results indicated that the concentrations of atmospheric PM2.5 under haze-fog weather were much higher than the 24 h mean value(75 μg/m3)in National Ambient Air Quality Standard during the sampling period.The pollution concentration of heavy metals in PM2.5 showed stable trend,which were Cu>Fe>Pb>Cr>Ni>Cd and Cu>Fe>Cr>Pb>Ni>Cd,respectively.The result of enrichment factor analysis showed that the EF values of Pb, Cd,Cu,Cr,Ni and Fe in PM2.5 were higher than 10,those elements came from man-made pollution sources obviously, and Cd and Cu were extremely enriched, the pollution may came from metal smelting or industrial coal combustion in urban area.关键词
大气PM2.5/重金属/污染水平/富集因子Key words
atmospheric PM2.5/heavy metals/pollution level/enrichment factor分类
资源环境引用本文复制引用
田蓉,刘迎云,熊佩,陈攀..衡阳市中心城区冬季雾霾天PM2.5中重金属污染初探[J].南华大学学报（自然科学版）,2016,30(3):110-114,118,6.基金项目
南华大学研究生科研创新基金资助项目(2015XCX29) （2015XCX29）
