石家庄市大气颗粒污染物主要成分及其来源分析

总悬浮颗粒物(TSP)是对环境与人体健康造成危害的主要物质。因此,本文对石家庄市大气悬浮颗粒物的时空分布和组成进行分析,探究了导致石家庄市产生雾霾的物质及其来源。结果表明:(1)研究区PM_(10)和PM_(2.5)平均浓度差异性较小,且高于《环境空气质量标准》(GB3095-2012)中所规定的年平均二级浓度限值;(2)西南高教的PM_(10)浓度相对较小;(3)石家庄市冬季TSP、PM_(10)和降尘的浓度均高于夏季;(4)TSP和PM_(10)二者所含重金属种类和含量高低顺序基本一致,由高到低依次为Ca、Al、Fe、Zn、Pb、Cu、Ni、Cr、Cd;(5)冬季(雾霾期)与夏季(非雾霾期)污染物主要化学组分基本一致,但冬季各元素含量明显高于夏季。

Analysis of main components and sources of atmospheric particulatepollutants in Shijiazhuang city

Total suspended particulate (TSP) is the main substance,which is harmful to environment and human health.Therefore, the temporal and spatial distribution and composition of atmospheric suspended particulates in Shijiazhuang were analyzed, and the sources of haze in Shijiazhuang were investigated in the paper.The results showed as follows: (1)The average concentration of PM10 and PM2.5 in the study area is similar, and is higher than the annual average concentration limitation specified in "Ambient Air Quality Standard" (GB3095-2012).(2) The concentration of PM10 in the Southwest Higher Education district is relatively lower.(3) The concentrations of TSP, PM10 and dustfall in winter are higher than that in summer.(4) The order of heavy metal contents which are contained in TSP and PM10 is the same, from high to low order Ca, Al, Fe, Zn, Pb, Cu, Ni, Cr, Cd.(5) The main pollutants of chemical components are basically the samein winter and summer, but the content of each element in winter is higher in winter than in summer.