Quantitative Analysis of some Toxic Metals in Domestic Water obtained from Lagos Metropolis
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Date
2009
Authors
Adepoju-Bello A.A.
Ojomolade O.O.
Ayoola G.A.
Coker H.A.B.
Journal Title
Journal ISSN
Volume Title
Publisher
The Nigeria Journal of Pharmacy
Abstract
Toxic metals are dangerous to human health if present in water at concentrations above the Environmental Protection Agency (EPA) Maximum contaminant level (MCL). At low concentrations they accumulate in the organs after some years and may pose great risk to human health. Cadmium lead, arsenic and chromium concentration in domestic water samples collected from different locations in Lagos metropolis were studied.
The contaminant level of cadmium, lead, arsenic and chromium in some brands of packaged water, well water and tap water randomly selected were determined. The samples were analysed using the atomic absorption
spectrophotometer (AAS) and the concentrations were obtained calibration plot method using the regression equation. The toxic metals, ad, cadmium, arsenic and chromium were detected in all the water samples analysed. The concentration of the i toxic metals in the samples analysed ranged from 0.0006 to 0.01mg/L The maximum contaminant level (MCL) for lead, cadmium, arsenic and chromium are 0.015ppm, 0.005ppm, 0.01 and 0.1 respectively. The concentrations of lead, chromium, arsenic and cadmium in the samples were, lower than the MCL. All the samples contained the toxic metals though at low concentration. The water samples analysed contained low concentrations of the toxic metals which could accumulate in the body after some years. Toxic metals should be removed from drinking water from Water Corporations as much as possible to prevent their accumulation in the body.
Key words: Toxic metals, water, maximum contaminant level (MCL).
Description
Scholarly articles
Keywords
Research Subject Categories::PHARMACY , Toxic metals , Contamination level , Well water , Human health
Citation
Adepoju-Bello AA, Ojomolade OO, Ayoola GA, Coker HAB (2009). Quantitative analysis of some toxic metals in domestic water obtained from Lagos metropolis.The Nigeria Journal of Pharmacy, 42 (1): 57-60.