物探与化探2016，Vol.40Issue(1)：154-159,6.DOI:10.11720/wtyht.2016.1.27
济南市近地表大气降尘元素地球化学特征及污染评价
Geochemical characteristics and pollution assessment of near-surface atmospheric dust in Jinan
摘要
Abstract
In order to investigate the geochemical characteristics of elements and evaluate the pollution condition of heavy metals, the au-thors collected 400 samples of near-surface atmospheric dust in Jinan City. The analyical result shows that the concentrations of As, F, Ni elements from atmospheric dust with average values of 9.5×10-6, 512×10-6, 26.0×10-6 are lower than their background values of urban soil in Jinan respectively, while Cd, Cr, Hg, Pb, Se, Zn and CaO concentrations which are 0.33×10-6, 101×10-6, 191×10-9, 38.0× 10-6, 0.79×10-6, 119.0×10-6 and 13.31% respectively are higher than their corresponding background values. Correlation analysis and principle component analysis(PCA) indicate that Cd, Pb, Zn and Se might be derived from coal combustion, Cr and Ni from soil, Cao and As from construction dust, and F from vehicle emissions;Hg is mainly controlled by anthropogenic sources comprising combustion, industrial steel and traffic activities. The values of geoaccumulation index of Cd, Pb, Zn, Cr, Ni, As, Hg in atmospheric dust vary in the range of -2.46~4.53,-1.81~2.75,-2.02~3.48,-2.38~3.48,-2.95~1.96,-3.45~2.58 and -3.04~6.87, respectively, and the pol-lution level of heavy metals is in order of Hg>Cd>Zn>Pb>Cr>As>Ni.关键词
近地表大气降尘/地球化学特征/主成分分析/重金属/污染评价Key words
near-surface atmospheric dust/geochemical characteristics/principal component analysis/heavy metals/pollution assessment分类
天文与地球科学引用本文复制引用
赵西强,王增辉,王存龙,代杰瑞,刘华峰,季顺乐..济南市近地表大气降尘元素地球化学特征及污染评价[J].物探与化探,2016,40(1):154-159,6.基金项目
国土资源地质大调查项目(1212010310306) （1212010310306）
