Studies Of Trace Metal Levels In Fish, Sediment And Water From Kpong Reservoir

ABSTRACT Water of good quality is indispensable to human survival on earth. The provision of potable water to both the rural and the urban populations is necessary to prevent health hazards. The aim of this research was to assess water quality with respect to physicochemical parameters and trace metals levels in the water, the sediment and the fish species from the Kpong Reservoir on the Lower Volta River. The water, the sediment and the fish samples were collected monthly for six (6) months from November 2011 to February 2012 (dry season) and from May to July 2012 ( wet season). The water, the sediment and the fish samples were analyzed for Hg, Se, Fe, Mn and Pb using Atomic Absorption spectroscopy (AAS). Mercury was determined using a cold vapour technique with the AAS equipped with a hydride generator. Selenium was also determined by hydride generation. A mixture of nitric acid (HNO3 65%), hydrochloric acid ( HCl 35%) and hydrogen peroxide (H2O2 30%) was used for complete oxidation of the organic sample in a fume chamber. The samples were loaded on a Milestone microwave Labstation ETHOS 900, INSTR:MLS -1200 MEGA. The results of this study showed that there were significant differences in concentrations of the physicochemical parameters between the two seasons. Domestic, municipal and Agricultural waste might have contributed to the release of higher contaminants into the sediment in both seasons. Coefficients of variation for the physicochemical parameters were below 50%, while iron and lead in addition to phosphate and sulphate were more than 50%. The mean concentration of trace metals in the water were 0.008 mg/L for Hg, 0.0035 mg/L for Se, 0.255 mg/L for Fe, 0.087 mg/L for Mn and 0.135 mg/L for Pb. Levels of all trace metals were below the WHO guideline values, except Pb which exceeded at 0.05 mg/L. Levels of nutrients were also below the WHO guideline value except phosphate which recorded a standard deviation of ±0.02 for the WHO guideline value of 0.3 mg/ L. The concentration (mg/kg) of metals in the sediment were higher than that of water and fish species. Of all the five fish species, the mormyrops species which had the largest weight recorded the highest concentrations of T-Hg and Se. The occurrence of other metals are in the order of concentration: Fe > Mn > Se > Hg > Pb. The mean values of mercury in the fish samples were below the WHO guideline limit of 0.5 mg/kg. Based on these results, the fish species tilapia zilli, hermichromis fasciatus, claria laeviceps, mormyrops anguilode and mormyrops species from the Kpong Reservoir are suitable for human consumption. 

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APA

Africa, P. & YIKPO, W (2021). Studies Of Trace Metal Levels In Fish, Sediment And Water From Kpong Reservoir. Afribary. Retrieved from https://afribary.com/works/studies-of-trace-metal-levels-in-fish-sediment-and-water-from-kpong-reservoir

MLA 8th

Africa, PSN, and WISDOM YIKPO "Studies Of Trace Metal Levels In Fish, Sediment And Water From Kpong Reservoir" Afribary. Afribary, 09 Apr. 2021, https://afribary.com/works/studies-of-trace-metal-levels-in-fish-sediment-and-water-from-kpong-reservoir. Accessed 22 Jul. 2024.

MLA7

Africa, PSN, and WISDOM YIKPO . "Studies Of Trace Metal Levels In Fish, Sediment And Water From Kpong Reservoir". Afribary, Afribary, 09 Apr. 2021. Web. 22 Jul. 2024. < https://afribary.com/works/studies-of-trace-metal-levels-in-fish-sediment-and-water-from-kpong-reservoir >.

Chicago

Africa, PSN and YIKPO, WISDOM . "Studies Of Trace Metal Levels In Fish, Sediment And Water From Kpong Reservoir" Afribary (2021). Accessed July 22, 2024. https://afribary.com/works/studies-of-trace-metal-levels-in-fish-sediment-and-water-from-kpong-reservoir