冶炼厂综合堆渣场周边水质和稻米重金属污染状况评价研究  

Assessment of Heavy Metals Pollution on Water Quality and Rice around the Spoil Area of the Smeltery

作　　者：周静[1] 崔键[1,2] 梁家妮[3] 

机构地区：[1]中国科学院南京土壤研究所,江苏南京210008 [2]南京师范大学地理科学学院,江苏南京210046 [3]安徽农业大学资源与环境学院,安徽合肥230036

出　　处：《华北农学报》2008年第B10期349-352,共4页Acta Agriculturae Boreali-Sinica

基　　金：国家“973”计划项目课题(2007CB936604);国家“863”计划项目课题(2006AA06Z356)

摘　　要：通过对冶炼厂综合堆渣场周边25个地表水、8个浅层地下水和19个稻米样品中重金属Cu、Zn、Pb、Cd、As含量的测定,发现该区地表水受到Cd、As的污染,在水作和旱作时超标率均在40.0%以上;浅层地下水受到Cd、Pb的威胁。稻米受到重金属Cu、Pb、Cd、As的复合污染,其中Cd污染最严重,超标率达100%,重度污染率达76.9%,其最高含量为标准(0.2 mg/kg)的37.6倍;其次为Cu、As、Pb,其超标率分别为38.5%,23.1%和15.8%。Heavy metals content were detected in 25 surface water samplers,8 shallow groundwater samples and 19 rice samples around the spoil area of the smeltery,revealing the content of Cu,Zn,Pb,Cd and As in the samples.The results showed that surface water was polluted by Cd and As,over 40.0% of the samples exceeded the concentration of official standards when the water was used for crops in both paddy and upland.Shallow groundwater was under threat.And rice was contaminated by Cu,Pb,Cd and As.Especially,the pollution from Cd was serious for rice,all of the samples were over the standard and 76.9% of the samples overlooked the serious pollution level.The maximum value for Cd was up to 37.6 times higher than the standard（0.2 mg/kg）.There were 38.5%,23.1% and 15.8% rice samples which were polluted by Cu,As and Pb,respectively.

关 键 词：综合堆渣厂 水环境 稻米 重金属污染 评价 

分 类 号：S154.1[农业科学—土壤学]