哈大高速公路路旁土壤重金属分布特性研究  

Analysis of Heavy Metal Distribution and Pollution in Soils Alongside the Harbin-Daqing Highways

作　　者：杜英秋 DU Ying-qiu(Primary Products Quality and Safety Institution of Heilongjiang Academy of Agriculture Sciences,Harbin 150086,China)

机构地区：[1]黑龙江省农业科学院农产品质量安全研究所,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2020年第8期44-48,共5页Heilongjiang Agricultural Sciences

基　　金：黑龙江省农业科技创新工程(2014QN016)。

摘　　要：为有效防治或改善土壤污染,通过选取哈大高速公路距路面中心点距离分别为5,20,50,100和200m的采样点,分析土壤中重金属Zn、Cu、Ni、Cr、As和Pb的分布特征,探索公路两侧土壤中重金属分布规律,并对土壤重金属污染状况进行测试及评价。结果表明:公路汽车尾气的不断排放、车辆磨损、表面径流等公路活动会使得公路两侧土壤和灰尘中重金属出现不同程度的积累。在无其他因素影响的一般情况下,公路两侧土壤中重金属含量随着距公路中心点距离的增加而呈下降趋势,在距离公路中心点足够距离后重金属含量变化趋于平缓。In order to effectively prevent or improve soil pollution,by selecting the sampling points on both side of Harbin-Daqing highways at distance of 5,20,50,100 and 200 mfrom road center,the distribution characteristics of heavy metals(Zn,Cu,Ni,Cr,As and Pb)in the soil on both sides of the road were analyzed.Heavy metal pollution status was tested and evaluated simultaneously.The results showed that activities such as continuous vehicle emissions,vehicle wear-out and overland flow will cause different levels of accumulation of heavy metals in soil and dust on both sides of the road.In the general case without other factors,the heavy metal content in the roadside soil decreases with the distance from the center point of the road.The heavy metal content tends to be flat after a suffcient distance from the center point of the road.

关 键 词：土壤重金属 分布 高速公路 

分 类 号：X53[环境科学与工程—环境工程]