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Assessment of Trace Metal Levels in Catfish (Cathorops spixii) from Sal River Estuary, Aracaju, State of Sergipe, Northeastern Brazil

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The concentrations of cadmium, copper, nickel, zinc, and lead were determined in the catfish (Cathorops spixii) from the Sal River estuary, Brazil, to evaluate the potential role of domestic and industrial effluents released without treatment on the quality of the estuarine environment with consequences to fish resources. Muscle, liver, and kidney samples were analyzed for trace metal composition by flame atomic absorption spectrophotometry. The mean concentration (µg/g wet weight) of trace metals in the tissues of C. spixii were as follows: cadmium  =  1.65, 2.81, and 0.71 µg/g; copper  =  29.07, 4.38, and 3.40 µg/g; zinc  =  229, 312, and 15.57 µg/g; nickel  =  1.22, 1.04, and 117 µg/g; and lead  =  7.09, 10.77, and 11.18 µg/g. The results show that metal accumulation in organs indicates the difference between them. The results showed high concentrations of copper, zinc, nickel, lead, and cadmium in the Cathorops spixii compared with the maximum values registered from fish in studies reported in other coastal regions of Brazil.

Keywords: catfish; estuary; liver kidney; muscle; trace metals

Document Type: Research Article


Publication date: December 1, 2010

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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