某地区集中式饮用水源地土壤重金属污染状况、评价与源解析  

CONTENTS,EVALUATION AND SOURCE ANALYSIS OF HEAVY MENTAL IN SOIL IN A CENTRALIZED DRINKING WATER SOURCE

作　　者：马武生[1,2] 金根娣[1] 薛梅[1] 张睿[1] 曹展梅[1] 

机构地区：[1]扬州市职业大学生物与化工工程学院,江苏扬州225009 [2]江南大学环境与土木工程学院,江苏无锡214122

出　　处：《环境工程》2016年第12期141-146,136,共7页Environmental Engineering

基　　金：水体污染控制与治理科技重大专项子课题(2015ZX07306001-5)

摘　　要：以某地区3个集中式饮用水源地为研究对象,对沿岸土壤中Cd、Pb、Cr、Cu、Zn、Ni、Co、Hg、As和Se的含量、分布、污染水平和来源进行了研究。结果表明:3水源地土壤中Cd超过GB 15618—1995《土壤环境质量标准》二级标准的样品数最多,其次是Zn、Pb、Cu、Cr和Ni。评价结果说明3个水源地土壤存在一定程度的重金属累积情况,处于轻微-中等程度的污染水平,其中Cd、Pb、Cr、Cu和Zn已接近或已处于预警水平。源解析结果表明:水源地土壤中重金属元素来源可归因于"燃煤因素"、"施肥因素"、"污灌因素"、"内燃机尾气排放因素"和"农药因素"等。This paper focused on the concentrations,distribution,pollution level and sources of heavy metal elements in soil of water sources,such as Cd,Pb,Cr,Cu,Zn,Ni,Co,Hg,As and Se. The results showed that the proportion of soils samples exceeded the Grade Ⅱ of Environmental Quality Standard for Soils,and Cd was the largest in all the elements,followed by Zn,Pb,Cu,Cr and Ni. Three water sources showed that heavy metal accumulated and reached minor-moderate pollution levels,in particular,Cd,Pb,Cr,Cu and Zn were close to or at the level of early warning. Source analysis results showed that the source of heavy metals could be attributed to the coal-fired factor,fertilization factor,sewage irrigation factors,exhaust emission factors of internal combustion engine and pesticide factor.

关 键 词：重金属 集中式饮用水源地 污染评价 土壤 

分 类 号：X53[环境科学与工程—环境工程]