期刊名称：The Open Environmental Pollution & Toxicology Journal
电子版ISSN：1876-3979
出版年度：2012
卷号：3
期号：1
页码：2-12
DOI：10.2174/1876397901203010002
出版社：Bentham open
摘要：
The present study represents a first insight into the Draa Lasfar mine (Marrakech) to assess the possible
diffusion of heavy metals and to predict the risk of their mobility in the surroundings of the mine area. The edaphologic
parameters pH, electrical conductivity (EC), loss on ignition (LOI) and CaCO3 were measured according to standard
methods, whilst heavy metals concentration was determined by FP-XRF. Concentration enrichment ratios (CER) were
calculated in order to estimate the anthropogenic contribution of target pollutants determining As, Cu, Pb and Zn as the
main pollutants, whereas Ba, Ca, Fe, K, Mn, Rb, Sr, Ti and Zr were considered lithogenic components. GIS contour maps
of pollutants using CER data, showed the most polluted areas at the vicinity of the mine, especially at the northwest area,
probably linked to weathering effects and topography of the area. Particle size studies revealed that As, Pb and Zn are part
of the mineral ore while Cu behavior corresponded to an anthropogenic origin. Additionally, mobility assays employing
single leaching tests indicated a greater mobility of As and Zn rather than that of Pb and Cu due to their lower adsorption
process in the soil, independently of their respective concentration.
