PGAA metals analysis in tailings in Zaida abandoned mine, high Moulouya, Morocco

The basin of Moulouya Oued is a region where mining industry has been developed early in the 20th century. As a consequence, residues generated from past mining activities over the years have been dumped as piles of tailings. Zaïda is one of the most affected region in this basin because of lead min...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2012, Vol.291 (1), p.129-135
Main Authors: Bounakhla, M., Embarch, K., Tahri, M., Baghdad, B., Naimi, M., Bouabdli, A., Sonnet, P., Révay, Zs, Belgya, T.
Format: Article
Language:English
Subjects:
Analysis
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
River sediments
Rivers
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Summary:The basin of Moulouya Oued is a region where mining industry has been developed early in the 20th century. As a consequence, residues generated from past mining activities over the years have been dumped as piles of tailings. Zaïda is one of the most affected region in this basin because of lead mine exploitation for long time. The aim of this study is to determine the amount of trace elements and the contamination of the river sediments. Analysis of collected samples has been achieved using the prompt gamma activation analysis method. The samples, in form of powders, were enclosed in Teflon sheets. The spectra were analyzed using HYPERMET PC software and the chemical composition is calculated using an Excel-macro that provides the concentrations as molar and weight percentages, as well as the corresponding masses of the oxides. The validation of the analytical method is demonstrated with the analysis of a reference material. The results show that the distribution of the studied metals (Pb, Zn, Cu, Cd, Cr Ni, and As) in the basin is dependent on location with a very significant contamination by Pb, Zn, Cu, Cd, Cr, and Ni close to the lead mine sites.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-011-1321-6