Metal Correlations and Mobility in Sediment and Water from the Gwebi River in the Upper Manyame Catchment, Zimbabwe

Utete, Beaven; Nhiwatiwa, Tamuka; Barson, Maxwell; Mabika, Nyasha

doi:10.5772/57199

Cited by 5 publications

(6 citation statements)

References 17 publications

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“…() and Utete et al. (), high levels of zinc were also recorded in water and sediment samples from the same rivers. Although zinc has low toxicity to man, it is highly toxic to fishes (Alabaster and Lloyd, ).…”

Section: Discussionmentioning

confidence: 72%

“…Mvungi et al (2003) suggested that solid waste pollution from Harare's small scale or so-called 'home' industries also contributes to high iron loads. In a simultaneous water quality study by Nhiwatiwa et al (2011) and Utete et al (2013), high levels of zinc were also recorded in water and sediment samples from the same rivers. Although zinc has low toxicity to man, it is highly toxic to fishes (Alabaster and Lloyd, 1980).…”

Section: Discussionmentioning

confidence: 97%

“…Heavy metals are toxicants commonly found in mining, industrial, agricultural and waste effluents (Merian, 1991). In southern Africa, high concentrations of metals in water, sediments, aquatic insects, fish, and aquatic birds have been reported in Zimbabwe and South Africa (Greichus et al, 1978;Heath and Claassen, 1999;Coetzee et al, 2002;Retief et al, 2009;Nhiwatiwa et al, 2011;Utete et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Histopathology and helminth parasites of African catfish Clarias gariepinus (Burchell, 1822) in relation to heavy metal pollution in a subtropical river system

et al. 2014

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Summary In a study aimed to determine the histopathology, component parasite communities and level of selected heavy metals, African catfish Clarias gariepinus from three rivers in Zimbabwe (Gwebi, Manyame and Mukuvisi) were analysed for heavy metals (Cd, Cr, Cu, Fe, Ni, Pb, Zn) in the gills, liver, kidney and muscles. The histopathology of these tissues was assessed by microscopic examination of stained thin sections. Metazoan parasite diversity and species composition in fish along different sites of the rivers were determined and compared. Levels of Cd, Fe, Pb and Zn were lowest in the Gwebi, Cr and Cu in the Manyame, and Ni in the Mukuvisi River. There were significant differences (P < 0.5) in concentration of iron and nickel in the gill and liver tissues of fish among the three rivers while significant differences in concentration of iron and lead were observed in muscle tissue. Gill chronic inflammation and ossification were significantly different (P < 0.5) in fish from among the three rivers. Chronic inflammation, hemosiderin deposits and bile accumulation in the liver were also significantly different (P < 0.5) among the three rivers and so was the extent of chronic inflammation in the kidney tissue. Lamellar fusion was slightly more present in gills of catfish from the Mukuvisi than the Gwebi River. The parasite community of C. gariepinus comprised three monogenean, two cestode and three nematode species. The least polluted Gwebi River had the highest parasite community diversity while the most polluted Mukuvisi River had the lowest diversity. Fish parasite community structure is thus a potential indicator of river pollution, while heavy metal pollution is a potential threat to fish and human health in the system.

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Histopathology and helminth parasites of African catfish Clarias gariepinus (Burchell, 1822) in relation to heavy metal pollution in a subtropical river system

et al. 2014

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“…Heavy metals are persistent in nature, toxic, and have a very high tendency to accumulate in living organisms and get adsorbed on sediment particles [6,7]. A good number of researchers [ 2,4,[8][9][10] have reported that sediments/soils are not only basic components of our environment as they provide nutrients for living organisms, but also serve as an important sinks for pollutants that are deleterious to health, particularly heavy metals. They also play a significant role in re-mobilization of contaminants in aquatic systems when certain conditions prevail eg., pH, redox potential, desorption or (bio) degradation of the sorptive substances [11].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Speciation Study of Water and Bottom Sediments from River Wujam in Chip District of Pankshin Local Government Area, Plateau State, Nigeria

Dapam¹,

Ibrahim²,

Dodo³

2018

JESPR

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Heavy metal species of water and bottom sediment samples from River Wujam in Chip district of Pankshin L.G.A. were investigated in the dry and wet seasons. The analysis was done using standard procedures. The results for the total metal concentration of the water samples ranges, thus, 0.02-0.03 mg/L for copper, 0.01-0.11 mg/L for lead, 0.02-0.07 mg/L for manganese, 0.01-0.06 mg/L for cadmium. But nickel and zinc were not detected within the limits used. The total metal concentration of metals analysed (Cu, Pb, Mn, Cd, Zn, and Ni) in the sediments revealed a generally higher concentration in the dry season except for cadmium which revealed a higher concentration in the wet season. Speciation of the metals was also carried out on the sediments using Tessier method to determine their distribution in the sediment of the river. The percentage ranges of the fractions for the dry season are, 12.24-46.09%, 15.80-24.01%, 11.47-21.91%, 10.83-22.80%, and 7.61-75.00% for exchangeable, carbonate, Fe-Mn oxide, organic, and residual fractions respectively. Ni was not detected within the limits used in the carbonate, Fe-Mn oxide and organic fractions. The range of fractions for the wet season are, 4.25-33.77%, 10.82-24.21%, 15.91-38.35%, 10.65-51.06%, and 19.01-26.77% for exchangeable, carbonate, Fe-Mn oxide, organic, and residual fractions respectively. Ni was not detected within the limits used in the carbonate and organic fractions. With change in the environmental conditions Cadmium and lead bound to such labile phases in both the dry and wet season, can easily remobilize in the water system. A moderate positive correlation existed in the total metal concentration of water samples between dry and wet seasons. A strong positive correlation existed in the total metal concentration in the sediments samples between dry and wet seasons. T-test results indicated that there is no significant variation in the concentrations between the seasons in both cases.

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“…Heavy metal pollution affects aquatic ecosystem integrity as metals tend to be accumulative in the trophic food webs with apex predators like crocodiles [3] and human beings at health risk [4] Severity of the exposure risks derives from the persistent and accumulative nature of the metal species in the water phase [5,6]. As well, the contributions of the point and non-point sources of metal pollution determines their concentrations in a water body [7].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Concentrations in Selected Fishes, and Water from Orogodo River, Agbor, Delta State in Nigeria

Wangboje

Ekome

Efendu

2017

AJEE

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This study determined heavy metal:-(lead (Pb), cadmium (Cd), copper (Cu), zinc (Zn) and iron (Fe) concentrations in selected fish species including: (Brycinus intermidus, Clarias gariepinus, Parachanna obscura, Ctenopoma kingsleyae, Hemichromis bimaculatus and Phractolaemus ansorgeii) and water from Orogodo River situated in Agbor, Delta State, Nigeria. Furthermore, the health risk exposure to humans who consume the fish and utilized the water in Orogodo River was assessed. The mean (±SD) concentration of the heavy metal in water ranged from 0±0 mg/l for Cd to 0.35±0.29 mg/l for Fe. The mean (±SD) concentration of metals in fish species ranged from 0.06±0.02 mg/kg for Cd in Brycinus intermidus to 187.90±89.59 mg/kg for Fe in Parachanna obscura. The Bioaccumulation Quotient (BQ) values ranged from 4.51 mg/kg for Pb in Hemichromis bimaculatus to 1297.13 mg/kg for Fe in Phractolemus ansorgei. These results imply that continuous intake of fish and water obtained from this river would have cumulative deleterious effect on aquatic organisms and man.

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Metal Correlations and Mobility in Sediment and Water from the Gwebi River in the Upper Manyame Catchment, Zimbabwe

Cited by 5 publications

References 17 publications

Histopathology and helminth parasites of African catfish Clarias gariepinus (Burchell, 1822) in relation to heavy metal pollution in a subtropical river system

Histopathology and helminth parasites of African catfish Clarias gariepinus (Burchell, 1822) in relation to heavy metal pollution in a subtropical river system

Heavy Metal Speciation Study of Water and Bottom Sediments from River Wujam in Chip District of Pankshin Local Government Area, Plateau State, Nigeria

Heavy Metal Concentrations in Selected Fishes, and Water from Orogodo River, Agbor, Delta State in Nigeria

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