摘要
用GPS定位在某城市各功能区采集319个样品,利用Excel等软件分析计算样品各重金属元素的统计参量和污染负荷指数,对实测剖面曲线进行数学建模,并对这些污染元素进行聚类分析。分析结果表明:工业区污染负荷指数平均值最大,其次为交通区,山区污染负荷指数最小;重金属污染负荷指数与地表土壤海拔高度呈负相关关系;Cr、Ni和Cu主要来源于工业污染源;Cd、Pb和Zn主要来源于工业和交通污染源;砷和汞来源于单质污染源。
319 samples were collected in each functional areas of a city with GPS.By the software excel and Matlab etc.,the statistical parameters of the heavy metals element of the samples and its pollution load index were analyzed and calculated.The cluster analysis of these elements was done with these software.The mathematical model of the measured profile curve was established.The results show that the average pollution load index of the industrial area is the largest,followed by the traffic zone.The pollution load index of the mountain zone is the smallest.The heavy metal pollution load index is negatively correlated with the elevation of the samples.Cr,Ni and Cu are mainly derived from the industrial pollution sources.Cd,Pb and Zn are mainly from the industrial pollution sources and the traffic pollution sources.As and Hg come from the elemental material.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2012年第6期95-99,10,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金项目(51075003)
关键词
重金属
污染负荷指数
相关系数
聚类分析
数学模型
Heavy metal
Pollution load index
Correlation coefficient
Cluster analysis
Mathematical model
