银川市区城市表层土壤6种有害重金属分布规律及其来源分析  

The distribution of six harmful heavy metals in the surface soil of Yinchuan city

作　　者：冯亚亮[1] 张明鑫[1] FENG Yaliang;ZHANG Mingxin(School of Resources and Environment,Ningxia University,Yinchuan750021, China)

机构地区：[1]宁夏大学资源环境学院,宁夏银川750021

出　　处：《国外医学（医学地理分册）》2017年第4期321-324,共4页Foreign Medical Sciences：Section of Medgeography

基　　金：国家自然科学基金项目(No.41461098);2016年度宁夏大学自然科学基金资助项目(No.ZR16015)

摘　　要：目的分析银川市区城市表层土壤6种有害重金属空间分布规律及其来源,为银川市居民健康防护提供依据和参考。探究有害重金属来源途径。方法采用网格法采集银川市市区96处表层土壤样品,测定Co、Cr、Cs、Mg、Pb、和Ti的含量。结果 Co、Ti主要来源于宁夏沙土土质;Cr、Cs、Mg、Pb主要来源于交通汽车尾气排放、汽车轮胎磨损产生的大量含有重金属的有害气体和粉尘。对比分析表层土壤重金属分布与人为活动之间存在明显的规律性。结论本文通过研究银川市区表层土壤中有害重金属对人体的危害及主要来源,明确未来城市建设应合理分配土地利用的方向,这将为未来城市规划与居民健康防护提供理论参考。Objective To analyze the distribution of heavy metals in the surface soil in Yinchuan City.Methods The surface soil samples of96sites in Yinchuan City were collected by grid method.The contents of Co,Cr,Cs,Mg,Pb,and Ti were determined.Results Co and Ti mainly came from the sandy soil.Cr,Cs,Mg and Pb came from vehicle exhaust and the large amount of harmful gas and dust produced by the wear and tear of automobile tires.There was correlation between the distribution of heavy metals in surface soil and human activities.Conclusion This article studies the distribution of harmful heavy metals in surface soil,and advices on the futureland use.

关 键 词：银川市 城市表层土壤 重金属 空间分布 人类活动 

分 类 号：R122[医药卫生—环境卫生学]