武夷山市垃圾堆放场周边土壤重金属的污染评价  

Pollution Evaluation of Soil Heavy Metal Content around the Dump in Wuyishan City

作　　者：周艳 李灵[2] 杨坚坚[2] 林权英 

机构地区：[1]武夷山风景名胜区管理委员会,福建武夷山354300 [2]武夷学院生态与资源工程学院福建省高校绿色化工技术重点实验室,福建武夷山354300

出　　处：《三明学院学报》2015年第2期64-70,共7页Journal of Sanming University

基　　金：南平市科技局项目(N2009Z10-3);武夷学院对接南平产业发展专项项目(2011DJ08);武夷山风景名胜区管理委员会资助项目(2008-03)

摘　　要：以武夷山市垃圾堆放场周边土壤为研究对象,采集土壤样品48个,分析了土壤中Cu、Zn、Pb、Cr和Ni 5种重金属含量、空间变异性、来源及污染评价。结果表明:研究区表层土壤Cu、Zn、Pb、Cr、Ni平均含量分别为16.8、190.0、37.0、40.8、12.9 mg·kg-1。以福建省土壤元素背景值为评价标准,5种重金属单因子污染指数从大到小依次为:Zn>Pb>Cr>Ni>Cu,其中Cu、Cr和Ni的含量处于安全水平,土壤Pb达到轻度污染,Zn达到中度污染。综合污染指数为1.86,属于轻污染。以国家《土壤环境质量标准》(GB15618-1995)二级标准为评价标准,5种重金属在表层土壤中的含量处于安全水平,综合污染指数为0.72,属警戒级。主成分分析表明,Ni和Cr主要来源于成土母质,而Zn、Cu和Pb主要与农业措施有关。The content, spatial distribution, source and pollution evaluation of soil Cu, Zn, Pb, Cr and Ni wereanalyzed with a total of 48 topsoil samples around a dump in Wuyishan city. The results showed that the mean concentrations ofCu, Zn, Pb, Cr and Ni were 16.8,190.0,37.0,40.8 and 12.9mg .kgl in the studied region, respectively. Compared with background values of soil in Fujian province, the order of single factor contamination index was Zn〉Pb〉Cr〉Ni〉Cu. The concentrations of Cu, Cr and Ni were in a safe state, the soil was polluted slightly by Pb and moderately by Zn. The comprehensive contamination index was 1.86, in slight pollution state. Compared with the Grade II of national Environmental Quality Standard for Soil （GB15618-1995）, the concentrations ofCu, Zn, Pb, Cr and Niwere in a safe state. The comprehensive contamination itidex was 0.72, in alert state. Factor analysis on sources of heavy metals revealed that Ni and Cr contamination in the soils were mainly from soil parentmaterials while the Zn, Cu and Pb were mainly related to agricultural activities.

关 键 词：垃圾堆放场 土壤重金属 污染评价 武夷山市 

分 类 号：X825[环境科学与工程—环境工程]