西安市主要公园表层土壤重金属污染特征及风险评价  

Pollution Characteristics and Risk Assessment of Heavy Metals in Surface Soil of Major Parks in Xi’an City

作　　者：周燕 李劲彬 Zhou Yan;Li Jinbin(Shaanxi Institute of Land Construction and Land Engineering Technology Co.,Ltd.,Xi’an,Shaanxi 710075,China;Shaanxi Land Engineering Construction Group Co.,Ltd.,Xi’an,Shaanxi 710075,China;Key Laboratory of Land Remediation of Shaanxi Province,Xi’an,Shaanxi 710061,China;Shaanxi Provincial Land Rehabilitation Engineering Technology Research Center,Xi’an,Shaanxi 710075,China)

机构地区：[1]陕西地建土地工程技术研究院有限责任公司,陕西西安710075 [2]陕西省土地工程建设集团有限责任公司,陕西西安710075 [3]陕西省土地整治重点实验室,陕西西安710061 [4]陕西省土地整治工程技术研究中心,陕西西安710075

出　　处：《绿色科技》2021年第16期66-70,共5页Journal of Green Science and Technology

摘　　要：利用X-荧光光谱仪对西安市17个公园表层土壤中As、Cu、Zn、Ni、Mn、Co、Pb、Cr、Fe等重金属元素的含量进行了测定,运用内梅罗综合污染指数法、单项污染指数法和地质累积指数法对其环境效应进行了评价。结果表明:9种元素的累积强度依次为Cr(1.172)<Ni(1.179)<As(1.194)<Mn(1.30)<Fe=Zn(1.514)<Cu(1.877)<Pb(2.055)<Co(2.261)。Pb、Co和Cu的累积程度较高,其余元素均存在一定的富集性。17个公园土壤除革命公园、儿童公园和莲湖公园污染比较严重,有较高的生态风险外,其余公园都属于中度污染级别,生态风险性相对较低。The contents of As,Cu,Zn,Ni,Mn,Co,Pb,Cr and Fe and other heavy metal elements in the surface soil of 17 parks in Xi'an City were determined by using X-fluorescence spectrometer,and the Nemeiro comprehensive pollution index was used.The environmental effects are evaluated by synthetic pollution index method,single pollution index method and geological accumulation index method.The results show that the nine elements of accumulated intensity is Cr(1.172)<Ni(1.179)<As(1.194)<Mn(1.30)<Fe=Zn(1.514)<Cu(1.877)<Pb(2.055)<Co(2.261).The accumulated intensity about Pb,Co and Cu are relatively high in all parks,and the other elements all have a certain degree of enrichment.Revolution Park,Children's Park,and Lianhu Park have high ecological risks.The other parks are at a moderate level of pollution and have relatively low ecological risks.other parks belong to middle level pollution and the ecological risk isn’t very high.

关 键 词：公园土壤 风险评价 重金属 污染 西安 

分 类 号：X53[环境科学与工程—环境工程]