World Journal of Analytical Chemistry
ISSN (Print): 2333-1178 ISSN (Online): 2333-1283 Website: http://www.sciepub.com/journal/wjac Editor-in-chief: Raluca-Ioana Stefan-van Staden
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World Journal of Analytical Chemistry. 2016, 4(1), 1-5
DOI: 10.12691/wjac-4-1-1
Open AccessArticle

Health Risk Assessment for Exposure to Some Selected Heavy Metals via Drinking Water from Dadinkowa Dam and River Gombe Abba in Gombe State, Northeast Nigeria

Maigari A. U.1, , Ekanem E. O.2, Garba I. H.2, Harami A.2 and Akan J. C.3

1Department of Chemistry, Federal College of Education ( Tech.), P. M. B. 60, Gombe, Gombe State, Nigeria

2Department of Chemistry, Abubakar Tafawa Balewa University, Bauchi State, Nigeria

3Department of Chemistry, University of Maiduguri, Maiduguri, Borno State, Nigeria

Pub. Date: March 09, 2016

Cite this paper:
Maigari A. U., Ekanem E. O., Garba I. H., Harami A. and Akan J. C.. Health Risk Assessment for Exposure to Some Selected Heavy Metals via Drinking Water from Dadinkowa Dam and River Gombe Abba in Gombe State, Northeast Nigeria. World Journal of Analytical Chemistry. 2016; 4(1):1-5. doi: 10.12691/wjac-4-1-1

Abstract

The concentrations of eight heavy metals (Fe, Mn, Cu, Pb, Cd, Ni, Co and Zn) were determined by atomic absorption spectroscopy in water from Dadinkowa dam and Kwadon boreholes which are the major sources of drinking water to Gombe town in Gombe State, North-East, Nigeria. The concentrations of metals in water from Dadinkowa dam were in the order: Fe (1.86mg/l), Mn(0.68mg/l), Cu(0.92mg/l), Pb(0.19mg/l), Cd(0.50mg/l), Ni(0.59mg/l), Co(0.42mg/l) and Zn(0.83mg/l).The concentrations of the metals in water from Gombe Abba River were in the order Fe(0.21 mg/l), Mn (0.24 mg/l), Cu (0.29 mg/l), Pb (0.02 mg/l), Cd (0.10 mg/l), Ni( 0.04 mg/l), Co(0.12 mg/l) and Zn (0.41 mg/l). The human health risk assessment was performed by determining the chronic daily intake (CDI), hazard quotient (HQ) and total hazard index (THI) of the metals through human oral consumption for both adults and children. The HQ of iron, manganese, nickel and cobalt in water from Dadinkowa dam were all greater than unity and thus pose a potential health risk for both adults and children while cobalt was the only heavy metal of concern in water from Gombe Abba River as its HQ was greater than unity. The THI of water from all the sampled sites assessed were of high risk. Further monitoring of these sites is recommended as well as research by biomedical experts to reveal the exact adverse effects that heavy metal contamination of water might induce in humans, particularly among individuals in vulnerable populations such as children.

Keywords:
atomic absorption spectroscopy chronic daily intake drinking water hazard quotient health risk assessment heavy metals total hazard index

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