PMID: 9646526Jul 1, 1998Paper

Potential protective effect of calcium carbonate as liming agent against copper toxicity in the African tilapia Oreochromis mossambicus

The Science of the Total Environment
M P de Vera, G N Pocsidio

Abstract

The lipid peroxidative effects of copper sulfate singly (4 mg/l CuSO4.5H2O) and in combination with calcium carbonate (4 mg/l CuSO4.5H2O + 50 mg/l CaCO3) were determined in the liver of the African tilapia Oreochromis mossambicus following exposures of the fish to the chemicals for 24, 48, 72, 96 and 168 h. Lipid peroxidative effects of the treatment with calcium carbonate (50 mg/l CaCO3) and with a known hepatotoxicant, carbon tetrachloride (0.25 ml/l CCl4) were also determined. Fish not exposed to any chemical served as negative controls. The extent of lipid peroxidation was based on hepatic malondialdehyde (MDA) levels as assayed using the thiobarbituric acid reaction test. Results suggested the lipid peroxidative property of the copper salt which was associated with the toxic nature of the heavy metal, although, this effect was not as potent as that of CCl4. Findings also indicated a measure of protection against copper hepatotoxicity provided by the addition of calcium carbonate as a liming agent in the water.

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Citations

Jul 28, 2013·Environmental Geochemistry and Health·Salih Muhammad Awadh, Sura Abdul Al-Ghani
Jan 24, 2012·The Science of the Total Environment·Wei-Yu ChenChung-Min Liao

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