Fernández J A, Carballeira A
Ecología, Facultad de Biología, Universidad de Santiago de Compostela, Spain.
Arch Environ Contam Toxicol. 2001 May;40(4):461-8. doi: 10.1007/s002440010198.
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.
对在加利西亚（西班牙西北部）采集的陆生苔藓样本（硬叶绢藓和垂枝藓）受不同元素污染的程度进行了评估。测定了苔藓中铝、砷、钙、镉、钴、铬、铜、铁、汞、钾、镁、锰、钠、镍、铅、硫、硒和锌的浓度，然后通过将每个值除以该元素相应的背景水平来计算污染因子。为了使用污染因子（CFs）评估污染情况，建立了一个量表，可对所测定的每种元素的采样点进行分类。提议的量表包括六个类别，从CF值小于1（无污染）到大于27（极度污染）。最后，汇总了所有可用信息并总结为一个污染指数。该指数的优点是它考虑了元素的毒性，并且可以与现有的分类量表一起使用。
