ISSN Print: 2381-1331  ISSN Online: 2381-134X
AASCIT Journal of Environment  
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Total and Extractable Toxic Metal in Water and Sediments of River Kaduna Within Kaduna Metropolis
AASCIT Journal of Environment
Vol.3 , No. 2, Publication Date: Aug. 2, 2018, Page: 33-41
1482 Views Since August 2, 2018, 307 Downloads Since Aug. 2, 2018
 
 
Authors
 
[1]    

Odoh Raphael, Department of Chemical Sciences, Federal University, Wukari, Nigeria.

[2]    

Yebpella Garbunga Gary, Department of Chemical Sciences, Federal University, Wukari, Nigeria.

[3]    

 Udegbunam, Department of Chemical Sciences, Federal University, Wukari, Nigeria.

[4]    

Ifeoma Sandra, Department of Chemical Sciences, Federal University, Wukari, Nigeria.

 
Abstract
 

Geochemical analysis of some heavy metals in water, sediment and their speciation in the sediment samples were carried out in river Kaduna within Kaduna metropolis to determined the distribution and association of heavy metals namely As, Cd, Co, Cr and Pb. The method adopted for the analysis of these metals is Atomic Absorption Spectrometer (A.A.S.). The results for the study revealed that the metal levels in the water from the study areas range from 0.013 – 0.420, 0.002 – 0.880, 0.011– 1.330, 0.010 – 0.990 and 0.020 – 0.850 mg/L for As, Cd, Co, Cr and Pb respectively, while in the sediment samples from the same location, the levels of the same metals ranged from 7.250 – 9.850, 2.200 – 5.550, 14.550 – 27.970, 10.550 – 25.890 and 39.650 – 55.650 mg/g for As, Cd, Co, Cr and Pb respectively. Water and sediment samples contained higher concentrations of the toxic metal determined in the study sites as compared to the toxic metals from control areas indicating the presence of contaminants particles in the area A five-step sequential extraction protocol of toxic metals “As, Cd, Co, Cr and Pb” in sediments from River Kaduna within Kaduna metropolis indicated that Cr, Pb, and Cd contribute significant quantities in the exchangeable and acid extractable fractions (mobile phase), making them easily bio available while As and Co, residual fractions contributed the maximum, which is inert form and hence the environmental effect may not be significant. Detection of these heavy metals especially Cd and Co at higher concentrations in sediment samples calls for sustained monitoring since transfer of metals across the food chain and accumulation are most probable with resultant health problems.


Keywords
 

Association, Distribution, River Kaduna, Sediments, Speciation, Toxic Metal, Water


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