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Determination Of Some Heavy Metals In Sea-grass | 9474
Journal of Marine Science: Research & Development
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The concentrations of heavy metals (Cr, Co, Zn, Cd, and Pb ) were found in the samples of tissues of Sea-grass Posidonia
Oceanica (L.) Delile that were collected from eighteen different sites along 820 Km of the coast of eastern Libya (ci.820Km)
on the Mediterranean sea (the first site is about 500 km to the east of Alexandria of Egypt). These samples were collected from
the following 18 sites (east to west):
Tobrouk, Ras-Etteen, Derna, Ras-Lehlal, Sousa, Qasr Libya, Tulmaitha, Deryana, North Benghazi, Alssabri, Family Village
(Qaria), Nairowz, Nakheil, Geminis, Sultan, Zuitina, Al-Briga and Ras-Lanouf.
The technique used by this study was Flame Atomic Absorption Spectrometry (model novAA300). Our study shows that
elevated concentrations of Zn, Co, and Pb are found in most samples, particularly those were collected near the discharge points
of city sewages effluent and the power station sites. The concentrations of Cr and Co were very low in all the samples except for
those were collected near the city of Benghazi.
Our statistical analysis (one-way ANOVA) indicates that the Sea-grass" Posidonia Oceanica"(L.) Del. tissues have different
levels of metal bioaccumulation which might be used as a bio monitors for trace metals. The higher values of MPI are recorded
for BR and TP, that is 121.18 & 124.29 respectively . Perhaps the high values of MPI for these two sites are due to the high elevated
values (387.56) μg /g and (186.40) μg/g of Chromium for both sites (BR & TP) . The least values of MPI are obtained for the
locations SP, ZU and RH (20.16, 20.96 and 22.20 μg\g) respectively and this may be explained by the low levels of the five heavy
metals ( Cr, Co, Zn, Cd and Pb ) in these sampled sites.
Abdulsalam A. Benkhayal completed his Ph.D. from Salford University, Manchester, England in 1989 in Analytical Chemistry. M.Sc. from Bristol
University, England, United Kingdom in 1984. Currently he is serving as Associate professor in Analytical Chemistry in Benghazi University, Libya.
His specialization includes Analytical Chemistry filed, dealing with Atomic Spectroscopy particularly electro thermal atomizer (Flameless), direct
introduction of Solid Samples into Rectangular Graphite Furnace. environmental Pollution by Heavy Metals, Marine Oil Pollution.
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