The occurence of heavy metals in the vacinity of industrial complexes in Nigeria

Ndiokwere, Ch. L.; Ezihe, C.A.

doi:10.1016/0160-4120(90)90123-n

Cited by 22 publications

(9 citation statements)

References 12 publications

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“…It has been reported by some authors (Mombeshira et al, 1988;Ndiokwere and Ezihe, 1988;Egborge, 1988) that large amount of untreated waste water is being discharged into the rivers, lakes and seas in Nigeria by some industries located near the rivers without consideration of the adverse effect it may have on the aquatic life and the quality of the receiving water bodies. It has been reported that over 54 elemental toxicants affect fish in rivers, lakes and seas due to pollution by untreated waste water, which is being discharged into the river (Heitmuller et al, 1981).…”

Section: Introductionmentioning

confidence: 95%

Assessment of elemental contaminants in water and fish samples from Aba river

Alinnor

2005

Environ Monit Assess

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The elemental contaminants in water and fish samples from Aba river were studied. The elements studied were Zn, Ni, As, Hg, Co and Mn. Three water samples and three samples of different fish species were collected from different locations in the river. The water and fish samples were analysed for elemental contaminants using Atomic Absorption Spectrophotometer (AAS). The elemental toxicants Zn and Mn were identified in appreciable amounts in fresh fish species namely, Lates niloticus and Oriochronis niloticus, of mean values 8.012 ppm and 0.861 ppm, respectively. The analysis also shows arsenic concentration of mean value 0.01 ppm in Lates niloticus. The analysis of frozen fish samples purchased from the Waterside market located near the river shows Ni and Hg levels of mean values 0.83 ppm and 0.02 ppm, respectively. The levels of elemental contaminants As, Zn, Hg and Mn from the water samples have mean values 0.082 ppm, 11.284 ppm, 0.201 ppm and 1.024 ppm, respectively. There are five industries that discharge waste products into Aba river. In view of this, there is a need to determine the level of pollution of the river, since the inhabitants depend on the river for their drinking water, fishing and other domestic uses. This study is aimed at determining the level of heavy metal toxicants in fish and water samples from the river. The effect of these elemental contaminants and the associated health hazards were examined.

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Section: Introductionmentioning

confidence: 95%

Assessment of elemental contaminants in water and fish samples from Aba river

Alinnor

2005

Environ Monit Assess

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“…The chemistry (or quality) of river water is influenced by inputs from the atmosphere, soil and water-rock reactions (weathering), as well as from pollutants that are added due to human activities. Previous investigations have shown that there is positive correlation between industrialization and widespread contamination of surface water by heavy metals (Ndiokwere and Ezihe 1990;Egborge 1991;Walsh 2000;Olafia and Ayodele 2004). Occurrence of heavy metals in the aquatic environment is of major ecological and public health concern because of their toxicity at certain concentrations, translocations through food chains, non-biodegradability, which is responsible for their accumulation in the biosphere, threat to human life and the environment.…”

Section: Introductionmentioning

confidence: 97%

An assessment of heavy metals loading in River Benue in the Makurdi Metropolitan Area in Central Nigeria

Eneji

Sha’Ato

Annune

2011

Environ Monit Assess

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River Benue, the second largest river in Nigeria, serves as the major source of municipal water supplies for towns and villages along its course. Water samples from the river were collected at ten stations in the Makurdi metropolitan area (7°44(') N, 8°32(') E) in Benue State, Central Nigeria, for 12 months and analyzed for their heavy metals concentration, along with other water-quality parameters such as turbidity, pH, total dissolved solids and total solids. The results revealed that the mean concentrations of heavy metals in the river was in the following ascending order, Cd < Cu < Zn < Mn < Pb < Cr < Fe. The levels of most of the parameters determined, with the exception of Cd, Cr and Pb were, generally, within acceptable limits for drinking water. From the present study, it is concluded that the River Benue is only moderately contaminated with regard to heavy metals, in the Makurdi metropolitan area.

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“…Similar work carried out by Ndiokwere and his collaborators on heavy metal pollution from vehicles indicated the existence of lead contamination in vegetables and crops in Kaduna state and also concluded that the State's primary schools could be highly leaded. (Ndiokwere, 1984;Ndiokwere and Ezihe, 1990) The results from the interior have shown that the schools like LK-II, HCPS, and SPS have fairly elevated lead concentration levels, which indicates, the source of lead to be from the interior of the buildings. Exterior lead concentration analysis indicates that schools like SPS and ACLPS sourced their lead concentration levels from the flaking of paints from the walls, while schools like HCPS and LM shows an indication of their lead concentration from sources far from the buildings probably from debris dumped from the renovated buildings coupled with ejections from vehicle exhaust.…”

Section: Resultsmentioning

confidence: 99%