Heavy Metals and Chemical Composition of Mullet Fish and Water Quality of Its Farms
Background: Fish is a source of high-quality protein, supplying respectively ≈6% and ≈16.4% of the world’s and total animal protein requirements. Mullet production is mainly farm-based. Heavy metal accumulation in aquatic organisms is a serious sequel of aquatic system pollution. Objectives: to a...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
Alexandria University
2012-06-01
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Series: | Journal of High Institute of Public Health |
Subjects: |
Summary: | Background: Fish is a source of high-quality protein, supplying respectively ≈6% and ≈16.4% of the
world’s and total animal protein requirements. Mullet production is mainly farm-based. Heavy metal
accumulation in aquatic organisms is a serious sequel of aquatic system pollution. Objectives: to
assess some heavy metal concentration and physiochemical composition of farm fish and water
Methods: 60 mullet fish and 18 surface water samples were collected from three fish farms for
determination of fish and water Cd, Zn, Cr, Cu and Pb concentrations as well as analysis of fish
proximate chemical composition and water physiochemical parameters. Results: Only Pb and Zn
exceeded the maximum permissible limit (MPL) in fish samples while Pb and Cd exceeded the MPL
in water samples. Pb levels exceeded the MPL of fish (1.5 mg/kg) in 5% of fish samples while its
concentration exceeded the MPL of water (0.01mg/l) in 50% and 33.3% of water samples during
winter and summer respectively. Zn concentration exceeded the MPL (5 mg/kg) in about 6.5% of fish
samples during winter season only. All water samples exceeded the MPL of Cd (0.003 mg/l) during
winter only. Chemical analysis of fish revealed that there was no significant difference in protein
content of mullet among different farms and between the two seasons. Conclusion: Pb and Zn
accumulate in fish edible tissue inconsiderably high concentrations. Pb and Cd pollution should be
monitored in fish farming water. |
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ISSN: | 2357-0601 2357-061X |