郑州市各级别城镇土壤重金属污染评价  

Assessment of heavy metal contaminations in different ranking urban soils of Zhengzhou City

作　　者：楚纯洁[1] 刘清臻[2] 马建华[3] 

机构地区：[1]平顶山学院环境与地理科学系,河南平顶山467000 [2]平顶山教育学院,河南平顶山467000 [3]河南大学资源与环境研究所,河南开封475004

出　　处：《西北师范大学学报（自然科学版）》2010年第3期105-110,115,共7页Journal of Northwest Normal University(Natural Science)

基　　金：河南省重点科技攻关项目(0721021500)

摘　　要：选取郑州市自然条件类似但工业化、城镇化水平差异的市区、中牟县城和韩寺镇,测定土壤中Pb,Cd,Zn,Cr,Cu,Ni 6种重金属元素含量,采用内梅罗综合指数和加权统计分析法进行重金属污染评价,并通过灰色斜率关联度分析方法初步分析了城镇土壤重金属污染的主要人为活动源因素.结果表明,研究区土壤主要污染元素为Pb,Cd,Zn和Cr;土壤Pb污染主要与交通、工业有关,Cd污染与城镇建设、工业有关,Zn污染与居民日常生活和工业有关;各级城镇土壤均发生不同程度的重金属污染,综合污染大小次序为郑州市区>中牟县城>韩寺镇.The heavy metal pollutions are investigated in different ranking urban soils with the example of Zhengzhou City,Zhongmu County and Hansi Town,which sharing similar natural conditions but different levels of urbanization and industrialization.The contents of Pb,Cd,Cu,Zn,Cr and Ni in soils are determined.Applying Nemerow integrated index and method of weighted statistcal analysis,pollution of heavy metals is evaluated.Then,several human driving factors influencing heavy metal pollutions in urban soils are analyzed quantatively by using the grey slope relational analysis method.The results show that：The main soil contaminated elements in study areas are Pb,Cd,Zn and Cr.Pollution of Pb is chiefly caused by traffic transportation and industrial activities,Cd pollution is mainly caused by urban construction and industrial activities,and Zn pollution is mainly caused by residential daily lives and industrial activities.There exists heavy metal concentration to different extents in different ranking urban soils.The degree of pollution turns out to be：Zhengzhou CityZhongmu CountyHansi Town.

关 键 词：城镇土壤 重金属污染 评价 郑州市 

分 类 号：X131.2[环境科学与工程—环境科学] X144