Temporal variation and distribution of trace metals in freshwater and fish from Calabar River, S.E. Nigeria

An investigation on the abundance and distribution of trace metals (Fe, Cu, Zn, Mn, Cr, Cd and Pb) in water, and nine species of fish samples from Calabar river was carried out in 1992. The concentrations of iron (6000-7240μgl^sup -1^), zinc (4910-7230μgl^sup -1^), and cadmium (3-7μgl^sup -1^) showe...

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Bibliographic Details
Published in:Environmental geochemistry and health 1999-03, Vol.21 (1), p.51-51
Main Authors: Ekpo, BO, Ibok, U J
Format: Article
Language:English
Subjects:
Body weight
Cadmium
Chromium
Copper
Fish
Freshwater fish
Iron
Lead
Manganese
Metal concentrations
Nigeria, Calabar R
Rivers
Trace metals
Zinc
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Summary:An investigation on the abundance and distribution of trace metals (Fe, Cu, Zn, Mn, Cr, Cd and Pb) in water, and nine species of fish samples from Calabar river was carried out in 1992. The concentrations of iron (6000-7240μgl^sup -1^), zinc (4910-7230μgl^sup -1^), and cadmium (3-7μgl^sup -1^) showed moderate pollution while those of copper (420-630μgl^sup -1^), manganese (23-48μgl^sup -1^), chromium (Cu>Mn>Pb>Cd=Cr and were within the limits that were safe for consumption.[PUBLICATION ABSTRACT]
ISSN:0269-4042
1573-2983
DOI:10.1023/A:1006544711923