Wonder Agbasah - Academia.edu (original) (raw)

Papers by Wonder Agbasah

DOI: 10.21276/haya.2018.3.3.7 Abstract:In aquatic ecosystems, metal concentrations are monitored ... more DOI: 10.21276/haya.2018.3.3.7 Abstract:In aquatic ecosystems, metal concentrations are monitored by measuring the levels in fish, water and sediments. Contribution of heavy metals in the water bodies include industrial effluents, fossil fuels burning, agricultural runoffs, geological weathering domestic waste and human and animal excretions. Water, sediment and fish samples from the river were used to assess the levels of heavy metals concentration in the river. The objective of this study was to measure the concentration of levels of the heavy metals (Cd, Co, Cr, Zn, Pb, Cu, Fe, Mn and Ni) in samples of water, fish (Oreochromis niloticus) and sediments from Afram River. Heavy metal concentration and selected physicochemical parameters (Electrical conductivity, Temperature, TDS and pH) of the water samples were determined. Levels of the heavy metals (Cd, Co, Cr, Zn, Pb, Cu, Fe, Mn and Ni) in water, fish (Oreochromis niloticus) and sediments from Afram River were determined using VAR...

DOI: 10.21276/haya.2018.3.3.8 Abstract:A total of seventy five (75) marine fishes comprising eigh... more DOI: 10.21276/haya.2018.3.3.8 Abstract:A total of seventy five (75) marine fishes comprising eight (8) species were collected from local wholesale markets at Kaneshie and Abeka, Accra, Ghana. The samples obtained from Kaneshie market were Salmon salar (Salmon), Thunnus obesus (Tuna), Scomber scombrus(Atlantic mackerel) and Clupea harengus (Atlantic herring) and those obtained from Abeka market were Centroberyx affinis (Red fish), Merluccus paradoxas(Hake fish), Scomber trachurus (Atlantic horse mackerel) and Melanogrammus aeglefinus(Haddock). Mercury concentrations in the muscle and liver tissues were determined by cold vapour atomic absorption spectrophotometry using a semi-automated mercury analyzer. Mean mercury concentrations in the muscle ranged from 0.06 to 0.33 μg g -1 wet weight, with Thunnus obesus having the highest followed by Merluccus paradoxas which are all predatory fishes. Mean mercury concentration in the liver tissue ranged from 0.06 to 0.34 μg g -1 wet weight, wit...

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DOI: 10.21276/haya.2018.3.3.7 Abstract:In aquatic ecosystems, metal concentrations are monitored ... more DOI: 10.21276/haya.2018.3.3.7 Abstract:In aquatic ecosystems, metal concentrations are monitored by measuring the levels in fish, water and sediments. Contribution of heavy metals in the water bodies include industrial effluents, fossil fuels burning, agricultural runoffs, geological weathering domestic waste and human and animal excretions. Water, sediment and fish samples from the river were used to assess the levels of heavy metals concentration in the river. The objective of this study was to measure the concentration of levels of the heavy metals (Cd, Co, Cr, Zn, Pb, Cu, Fe, Mn and Ni) in samples of water, fish (Oreochromis niloticus) and sediments from Afram River. Heavy metal concentration and selected physicochemical parameters (Electrical conductivity, Temperature, TDS and pH) of the water samples were determined. Levels of the heavy metals (Cd, Co, Cr, Zn, Pb, Cu, Fe, Mn and Ni) in water, fish (Oreochromis niloticus) and sediments from Afram River were determined using VAR...

DOI: 10.21276/haya.2018.3.3.8 Abstract:A total of seventy five (75) marine fishes comprising eigh... more DOI: 10.21276/haya.2018.3.3.8 Abstract:A total of seventy five (75) marine fishes comprising eight (8) species were collected from local wholesale markets at Kaneshie and Abeka, Accra, Ghana. The samples obtained from Kaneshie market were Salmon salar (Salmon), Thunnus obesus (Tuna), Scomber scombrus(Atlantic mackerel) and Clupea harengus (Atlantic herring) and those obtained from Abeka market were Centroberyx affinis (Red fish), Merluccus paradoxas(Hake fish), Scomber trachurus (Atlantic horse mackerel) and Melanogrammus aeglefinus(Haddock). Mercury concentrations in the muscle and liver tissues were determined by cold vapour atomic absorption spectrophotometry using a semi-automated mercury analyzer. Mean mercury concentrations in the muscle ranged from 0.06 to 0.33 μg g -1 wet weight, with Thunnus obesus having the highest followed by Merluccus paradoxas which are all predatory fishes. Mean mercury concentration in the liver tissue ranged from 0.06 to 0.34 μg g -1 wet weight, wit...

All material is copyrighted and can only be used for purposes of this training.