干旱地区农业研究Issue(4)：202-207,268,7.
宝鸡某冶炼厂周边土壤铅镉总量及形态空间分布特征
Spatial distribution characteristics of total concentrations and forms of lead and cadmium in farmland soil nearby a smelter in Baoji
摘要
Abstract
Aimed at providing the basis for characterization of heavy metals in contaminated soils ,the spatial distri-bution characteristics of total concentrations and forms of Pb ,Cd in the farmland soil nearby a smelter in Baoji City , Shaanxi Province were investigated by using Kriging interpolation method ,and the correlation between total concentrations and various forms of Pb ,Cd in soil and their concentrations in wheat was analyzed .The results showed that the concen-trations of various forms of Pb was sequenced as :residual form > organic-sulfide form > Fe-Mn oxide from > ex-changeable form ,while that of Cd was sequenced as :exchangeable form > residual form > organic-sulfide form > Fe-Mn oxide form .The concentrations of total Pb and Fe -Mn oxide form of Pb and Cd in soil samples at 500 m from the smelter were significantly higher than those at 1 500 m and 2 500 m ,but there was no significant difference between the later two distances .As for the concentrations of total Cd and the other three forms of Pb ,Cd ,there was no significant difference among the three sampling distances .The results of Kriging interpolation analysis showed that ,except for ex-changeable form of Pb ,the spatial distribution of other forms of Pb ,Cd corresponded to the characteristic of wind direc-tion in the research area .Correlation analysis showed that the exchangeable and Fe -Mn oxide forms of Pb ,Cd in soil samples were significantly correlated with concentrations of Pb ,Cd in wheat samples .Therefore ,the exchangeable and Fe-Mn oxide forms of Pb ,Cd in soil samples could both be used as the characterization indicators of heavy metal pollu-tion in drylands nearby a smelter .关键词
土壤/重金属/形态/空间分布/小麦Key words
soil/heavy metal/form/spatial distribution/wheat分类
资源环境引用本文复制引用
许绍娥,李忠强,郝军亮,孟昭福,王瑶,李璐,彭鸽,白昭,杨淑英,李彬..宝鸡某冶炼厂周边土壤铅镉总量及形态空间分布特征[J].干旱地区农业研究,2014,(4):202-207,268,7.基金项目
陕西省环保厅中央重金属污染防治专项；陕西省农业科技攻关项目（2012K02-15）；陕西省社会发展攻关项目 （）
