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Estimation of Heavy Metals in the Bones of Selected Commercial Fish from the Eastern Libyan Coast |
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PP: 47-51 |
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doi:10.18576/jrna/090108
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Author(s) |
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R. Hamad,
F. A. Ikraiam,
H. Hasan,
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Abstract |
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| Measurement of heavy metals concentration was carried out for fishbones of eight commonly-consumed fish inhabiting nine different locations in the Eastern Coastline of Libya, a distance of about 500 km. These fish are: Epinephelus Marginatus (S1), Pagellus Bogaraveo (S2), Pagellus Arcarna (S3), Diplodus Vulgaris (S4), Umbrina Cirrosa (S5), Trachurus Mediterraneus (S6), Balistes Carolinensis (S7) and Seriola Dumerili (S8). The chemical analysis was performed by an Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). The obtained heavy metals were Cu, Pb, Cr, Zn, Co and Cd with concentrations not exceeding the limits of WHO guidelines for heavy metals and below the permissible safe limit value. Generally, the concentration of heavy metals in the studied samples were found to decrease in sequence of Zn > Pb > Cd > Cu > Cr > Co. Of these metals, the concentrations of Zn as an essential element were higher (except sample no. 4) than non-essential elements and the lowest were for Co, Cu and Cr. These results confirm the vital role of essential metals to fish species. Based on the results of the individual heavy metals values, with the exception of Pb, it is concluded that there was no health risk to humans due to consumption of these fish as far as heavy metal concentration is considered. |
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