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|Title: ||LEVELS OF HEAVY METALS AND CONTAMINATION STATUS OF A DECOMMISSIONED TAILINGS DAM IN GHANA|
|Authors: ||Sey, Emmanuel|
Belford, Ebenezer J.D.
|Keywords: ||Contamination factor|
Pollution Load index
Ecological Risk factor
|Issue Date: ||Aug-2019|
|Publisher: ||Environmental quality / Qualité de l’Environnement / Qualità ambientale,|
|Citation: ||Environmental quality / Qualité de l’Environnement / Qualità ambientale,|
|Abstract: ||Heavy metal pollution from tailings has become a major global concern due to its toxicity, persistence and accumulative potential with detrimental effects on public health and environmental receptors. In a bid to determine the contamination status of a decommissioned tailings storage facility (TSF 2) from the Chirano Gold Mine (CGM), nine core samples of mine tailings were collected down to a depth of 20 cm within a 8100 m2 grid. Concentrations of As (0.7 to 3.3), Pb (1.3 to 2.2), Cr (0.9 to 1.9), Cd (2.0 to 2.6), Cu (5.5 to 6.5), Zn (2.4 to 3.6) and Fe (4.5 to 12) mg/kg were below FAO/WHO permissible limits. Concentration of heavy metals statistically varied between sampling sites (p < 0.05). The geoaccumulation index and contamination factor revealed that, TSF 2 is uncontaminated with As, Pb, Cr, Cu, Zn and Fe. However, mine tailings were significantly enriched with Cd, and thus likely to pose ecological risk to the surrounding environment. In general, the tailings dam is not progressively deteriorating in accordance to pollution load index. Findings of this study would contribute to the environmental database of gold mine tailing at CGM to assist future remediation of the tailing storage facility.|
|Description: ||This article has been published in Environmental quality / Qualité de l’Environnement / Qualità ambientale, and is available at DOI: 10.6092/issn.2281-4485/9060|
|Appears in Collections:||College of Science|
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