Some characteristics of the distribution of heavy metals in urban topsoil of Xuzhou, China
Some characteristics of the distribution of heavy metals in urban topsoil of Xuzhou, China
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DOI：
10.1007/s10653-006-9052-2
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发表时间：
2007-01
影响因子：
4.2
通讯作者：
Xue-song Wang;Yong Qin
中科院分区：
文献类型：
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作者：
Xue-song Wang;Yong Qin
对徐州市城市表土中重金属的分布特征进行了评价。从 21 个土壤样品中测定了 Ag、Al、As、Au、Ba、Be、Bi、Cd、Co、Cr、Cu、Fe、Ga、Hg、Li、Mn、Mo、Ni、Pb、Pd、Pt、Sb、Sc、Se、Sn、V 和 Zn 的浓度。对对数正态分布图的检查表明，Al、Be、Fe、Ga、Li 和 V 的图几乎是线性的，表明这些金属几乎不受人类活动的影响，而 As、Cd、Cu、Pb、Pd、Pt、Se、Zn 等的图则不是线性的，可能是由于人类活动将这些金属输送到土壤中。 Al 用于这些数据的矿物学标准化。表土背景值的评估也通过对数正态分布图进行。结果表明，从对数正态分布图中获得的背景值与之前工作获得的徐州未污染土壤中除 Cd 和 Hg 之外的值相当。目前，对于Cd和Hg的例外情况，无法给出解释。
An assessment is presented of distribution characteristics of heavy metals in the urban topsoil from the city of Xuzhou. The concentrations of Ag, Al, As, Au, Ba, Be, Bi, Cd, Co, Cr, Cu, Fe, Ga, Hg, Li, Mn, Mo, Ni, Pb, Pd, Pt, Sb, Sc, Se, Sn, V and Zn have been determined from 21 soil samples. Examination of lognormal distribution plots indicates that the diagrams of Al, Be, Fe, Ga, Li, and V are almost linear suggesting that these metals are almost unaffected by anthropogenic activities while the plots for As, Cd, Cu, Pb, Pd, Pt, Se, Zn and others are not linear probably due to anthropogenic activities from which these metals are delivered to the soils. Al is used for mineralogical normalization of these data. An evaluation of background values for topsoil is also carried out by means of lognormal distribution plots. The results show our background values obtained from the lognormal distribution plots are comparable to those values of uncontaminated soils of Xuzhou obtained by previous work except for Cd and Hg. At present, no explanation for the exceptions Cd and Hg can be given.