文献类型：期刊文献

中文题名：新乡市近郊农田土壤重金属的生态风险评价

英文题名：Potential Ecological Risk Assessment of Heavy Metals in the Suburban Farmland Soil from Xinxiang City

作者：李飞[1];王晓钰[1,2];汤富强[3]

第一作者：李飞

机构：[1]湖南大学环境科学与工程学院;[2]新乡学院化学与化工学院;[3]湖南大学工商管理学院

第一机构：湖南大学环境科学与工程学院,长沙410082

年份：2011

卷号：39

期号：5

起止页码：84-87

中文期刊名：河南师范大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：污灌;土壤重金属;Hakanson潜在生态危害指数法;因子分析法

外文关键词：waste water irrigation; heavy metals in soil; index of Hakanson potential ecological risk; factor analysis

摘要：基于对新乡市近郊农田土壤的采样分析,利用潜在生态危害指数法及因子分析法,分析研究了土壤中重金属的潜在生态风险程度,内在关联性及其可能的污染来源.结果表明:土壤中重金属Cr与Cu的含量在国家土壤二级标准以内,而Cd,Ni与Zn含量明显超标;土壤重金属可能引起严重的综合生态风险,其中Cd,Ni的潜在生态风险等级分别隶属于极强生态风险级别,很强生态风险级别,Zn,Cr,Cu则隶属于轻微生态污染级别;土壤中Ni与Cd,Cu与Cr有显著的正相关性(p<0.01),其他重金属元素间无明显的相关性;Ni与Cd作为第一主成分被认为与电池废液灌溉有密切的关系,Cu与Cr作为第二主成分被认为主要与岩石或矿物的自然风化或侵蚀有关.
Contents and potential ecological risk of heavy metals in the Suburban Farmland soil of Xinxiang city have been researched based on the index of Hakanson potential ecological risk and factor analysis.The results show that the gross concentrations of Cr,Cu are lower than the nation standard,by contrast,the gross concentrations of Cd,Ni,Zn exceed the nation standard obviously.The degree of potential ecological risks indicated that Cd and Ni reached the higher degree of potential ecological risk,stronger ecological risk degree and strongest ecological risk degree respectively.Contrastively,ecological risk degree of Zn,Cr,Cu are all at the faint ecological risk degree.Factor analysis indicates the significant correlations exist among Cd and Ni,Cu and Cr,however,other heavy metals have no significant correlation.In consideration of the economic characters of Xinxiang city,Ni and Cd,as the first principal component,are in deep relation with waste water irrigation of battery industry.Cu and Cr,as the second principal component,are considered as the result from the natural rock weathering and soil erosion.