Evaluation of contamination, by different elements, in terrestrial mosses

被引：88

作者：

Fernández J.A. ^{[1
]}

Carballeira A. ^{[1
]}

机构：

[1] Ecología, Facultad de Biología, Univ. de Santiago de Compostela

来源：

Archives of Environmental Contamination and Toxicology | 2001年 / 40卷 / 4期

关键词：

Toxicity; Sampling Site; Background Level; Contamination Factor; Contamination Index;

D O I：

10.1007/s002440010198

中图分类号：

学科分类号：

摘要：

Evaluation was made of the degree to which samples of terrestrial mosses (Scleropodium purum and Hypnum cupressiforme) collected in Galicia (NW Spain) were contaminated by different elements. The concentrations of Al, As, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Na, Ni, Pb, S, Se, and Zn in the mosses were determined, then the contamination factors were calculated by dividing each value by the corresponding background level of that element. To assess contamination using contamination factors (CFs), a scale was established that allowed categorization of sampling sites for each element determined. The proposed scale comprises six categories, ranging from CF values of less than 1 (no contamination) to values of greater than 27 (extreme contamination). Finally, all available information was brought together and summarized in a contamination index. This index has the advantage that it takes into account the toxicity of the elements and that can be used with an already existing scale of classification.

引用

页码：461 / 468

页数：7

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