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Heavy metals contamination and human health risk assessment around Obuasi gold mine in Ghana.
Environ Monit Assess. 2016 May; 188(5):261.EM

Abstract

Gold mining has increased the prevalence and occurrence of heavy metals contamination at the Earth's surface and is causing major concern due to the potential risk involved. This study investigated the impact of gold mine on heavy metals (As, Cd, Cr, Cu, Pb, Hg, Ni, Fe, Mn, and Zn) pollution and evaluated the potential health risks to local residents via consumption of polluted groundwater, agricultural soils, and vegetable crops grown at three community farms surrounding the mine at Obuasi municipality of Ghana. The results showed levels of As, Cd, Cr, Hg, Fe, and Mn higher than the allowable drinking water standards. The vegetable samples analyzed showed high accumulation of As and Ni above the normal value. Bioaccumulation factors of heavy metals were significantly higher for vegetables grown in the Sanso soils. Estimated average daily intake and hazard quotient for As in drinking water as well as As, Pb, and Hg in vegetable samples exceeded permissible limit. Unacceptable non-cancer health risk levels were found in vegetable samples analyzed for As, Pb, and Hg. An unacceptable cancer risk was found via drinking of groundwater, in consumption of vegetables, and in soil. The hazard index for vegetables was higher than 1, indicating very high health risk to heavy metals contamination through consumption of vegetables grown around the sampling sites. The results recommend the need for regular monitoring of groundwater and food crops to protect consumers' health.

Authors+Show Affiliations

Nuclear Chemistry and Environmental Research Center, National Nuclear Research Institute, Ghana Atomic Energy Commission, P.O. Box LG 80, Legon, Accra, Ghana. crentbempah@hotmail.com.Department of Geological Engineering, University of Mines and Technology, P.O. Box 237, Tarkwa, Ghana.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27037696

Citation

Bempah, Crentsil Kofi, and Anthony Ewusi. "Heavy Metals Contamination and Human Health Risk Assessment Around Obuasi Gold Mine in Ghana." Environmental Monitoring and Assessment, vol. 188, no. 5, 2016, p. 261.
Bempah CK, Ewusi A. Heavy metals contamination and human health risk assessment around Obuasi gold mine in Ghana. Environ Monit Assess. 2016;188(5):261.
Bempah, C. K., & Ewusi, A. (2016). Heavy metals contamination and human health risk assessment around Obuasi gold mine in Ghana. Environmental Monitoring and Assessment, 188(5), 261. https://doi.org/10.1007/s10661-016-5241-3
Bempah CK, Ewusi A. Heavy Metals Contamination and Human Health Risk Assessment Around Obuasi Gold Mine in Ghana. Environ Monit Assess. 2016;188(5):261. PubMed PMID: 27037696.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Heavy metals contamination and human health risk assessment around Obuasi gold mine in Ghana. AU - Bempah,Crentsil Kofi, AU - Ewusi,Anthony, Y1 - 2016/04/01/ PY - 2015/09/23/received PY - 2016/03/14/accepted PY - 2016/4/3/entrez PY - 2016/4/3/pubmed PY - 2016/9/24/medline KW - Contamination KW - Ghana KW - Gold mining KW - Health risk assessment KW - Heavy metals KW - Obuasi SP - 261 EP - 261 JF - Environmental monitoring and assessment JO - Environ Monit Assess VL - 188 IS - 5 N2 - Gold mining has increased the prevalence and occurrence of heavy metals contamination at the Earth's surface and is causing major concern due to the potential risk involved. This study investigated the impact of gold mine on heavy metals (As, Cd, Cr, Cu, Pb, Hg, Ni, Fe, Mn, and Zn) pollution and evaluated the potential health risks to local residents via consumption of polluted groundwater, agricultural soils, and vegetable crops grown at three community farms surrounding the mine at Obuasi municipality of Ghana. The results showed levels of As, Cd, Cr, Hg, Fe, and Mn higher than the allowable drinking water standards. The vegetable samples analyzed showed high accumulation of As and Ni above the normal value. Bioaccumulation factors of heavy metals were significantly higher for vegetables grown in the Sanso soils. Estimated average daily intake and hazard quotient for As in drinking water as well as As, Pb, and Hg in vegetable samples exceeded permissible limit. Unacceptable non-cancer health risk levels were found in vegetable samples analyzed for As, Pb, and Hg. An unacceptable cancer risk was found via drinking of groundwater, in consumption of vegetables, and in soil. The hazard index for vegetables was higher than 1, indicating very high health risk to heavy metals contamination through consumption of vegetables grown around the sampling sites. The results recommend the need for regular monitoring of groundwater and food crops to protect consumers' health. SN - 1573-2959 UR - https://www.unboundmedicine.com/medline/citation/27037696/Heavy_metals_contamination_and_human_health_risk_assessment_around_Obuasi_gold_mine_in_Ghana_ DB - PRIME DP - Unbound Medicine ER -