交通活动对公路两侧土壤和灰尘中重金属含量的影响

被引：125

作者：

郭广慧

雷梅

陈同斌

宋波

李晓燕

机构：

[1] 中国科学院地理科学与资源研究所环境修复中心

来源：

环境科学学报 | 2008年 / 10期

基金：

国家杰出青年科学基金;

关键词：

机动车; 重金属; 公路灰尘; 公路两侧土壤;

D O I：

10.13671/j.hjkxxb.2008.10.002

中图分类号：

X53 [土壤污染及其防治];

学科分类号：

082803 ; 120405 ;

摘要：

为了解公路交通带来的重金属污染及其在公路两侧土壤中的分布规律,对相关研究结果的分析表明,含铅汽油、润滑油的燃烧,汽车轮胎、刹车里衬的机械磨损等是公路两侧土壤和灰尘中重金属污染的重要来源.机动车辆排放的含重金属颗粒物或直接沉积在路面灰尘中,或通过干湿沉降沉积在公路两侧的土壤中,使得公路两侧土壤和灰尘中重金属出现不同程度的积累.一般地,公路两侧土壤中重金属含量随着距公路距离的增加呈指数形式下降.公路两侧土壤中重金属的含量及其分布格局因受交通流量、车辆类型、地形与路况、绿化带配置和风、降雨等气象条件的影响而异.

引用

页码：1937 / 1945

页数：9

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