喀什市交通主干道沿线大气颗粒物及其重金属含量分布特征  

Distribution Characteristics of Atmospheric Particles and Heavy Metal Content along Five Main Traffic Roads in Kashgar

作　　者：王晶[1] 张胜楠[1] 张璐[1] 

机构地区：[1]喀什师范学院化学与环境科学系,新疆喀什844006

出　　处：《城市环境与城市生态》2014年第6期14-17,22,共5页Urban Environment & Urban Ecology

基　　金：新疆维吾尔自治区高校科研计划青年专项基金(XJEDU2013S36)

摘　　要：对喀什市具有代表性的5条交通主干道低空下的TSP及TSP中Cr、Cu、Pb、Zn进行了分析。结果表明:喀什市交通主干道TSP在晴天的平均浓度为118μg/m3、在浮尘天的平均浓度为316μg/m3。与国标[GB 3095—1996](300μg/m3)相比,TSP在晴天未超标,在浮尘天超标;同时研究发现车流量与TSP之间存在一定的正相关关系。喀什市交通主干道TSP中Cr、Cu、Pb、Zn在晴天的平均含量分别为1.11μg/m3、0.63μg/m3、0.16μg/m3,Zn未检出;在浮尘天的平均含量为2.74μg/m3、1.03μg/m3、2.36μg/m3、7.10μg/m3,TSP中Cr、Cu、Pb、Zn的浓度随距交通主干道距离的增加有下降的趋势。Total suspended particles（TSP） and the heavy metals such as Cr, Cu, Pb, Zn in TSP along the five main traffic roads in Kashgar were analyzed in this study. The results showed that the average concentrations of TSP along the main traffic road in Kashgar was 118 μg/m^3 in fine weather, but 316 μg/m^3 in dusty weather. Compared with the National Standard（300 μg/m^3）, TSP was above the normal standard in fine weather, while it was below the standard in dusty weather. The study also found that there was a positive relationship between traffic volume and TSP. The average contents of Cr, Cu, and Pb in TSP of the major traffic road in Kashgar was 1.11 μg/m^3, 0.63 μg/m^3, and 0.16μg/m^3, respectively. And Zn in TSP was not detected during fine weather due to its low content. However, the average contents of these four elements were 2.74 μg/m^3, 1.03 μg/m^3, 2.36 μg/m^3 and 7.10 μg/m^3, respectively in dusty weather. At the same time, it also found that the concentrations of the heavy mentals in TSP decreased with the increasing distance from the main traffic road in Kashgar.

关 键 词：喀什市 交通主干道 大气颗粒物 重金属 

分 类 号：X513[环境科学与工程—环境工程]