Metal concentrations in marine sediments from Lebanon

Shiber, John G.

doi:10.1007/bf02262523

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…The classification of Beirut sediments is not surprising, especially since high Pb concentrations were detected in the sediments of this area by Abi-Ghanem (2008), Nassif (2004), andShiber (1980). These high concentrations are consistent with the high Pb level in water of Beirut, up to 360 ng L À1 , measured by Nakhlé (2003).…”

Section: Discussion I Geo and Worldwide Comparisons Of Trace Metal Lesupporting

confidence: 81%

Distribution of Lead, Cadmium, and Vanadium in Lebanese Coastal Sediments and Mussels

Abi-Ghanem

Khalaf

Najjar

2014

Journal of Coastal Research

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To evaluate Lebanon coastal contamination by trace metals (Pb, Cd, and V), we measured their distributions in marine sediments and in bioindicator mussels (Brachidontes variabilis) along the Lebanese coastal zone. Seven sampling sites, Itanieh, Jiyeh, Beirut, Byblos, Batroun, Tripoli, and Arida, were selected. Trace-metal concentrations, determined in pelitic fraction of the sediment (,63 lm), were the highest in Tripoli sediments for Pb (104.4 lg g À1 ) and Cd (0.23 lg g À1 ), and in Arida for V (270 lg g À1 ). In B. variabilis, the highest Pb concentrations corresponded to mussels collected from Batroun (6.32 lg g À1 ), whereas the highest Cd concentrations were obtained in the Palms Island (off Tripoli) (1.3 lg g À1 ) and the highest V levels in Batroun (4.94 lg g À1 ). The determination of the geoaccumulation index shows that the investigated sediments on the Lebanese coast are unpolluted with Cd, moderately to strongly polluted with V at Arida, and extremely polluted with Pb at Tripoli. Pb concentrations in mussels B. variabilis are low compared with levels obtained in polluted areas in the world. However, Cd levels in the studied bioindicators at Batroun and Tripoli are similar to those obtained in other Mediterranean moderately polluted sites. High Cd and V levels in mussels collected at Batroun clearly show the anthropogenic impact of the nearby fertilizer plant.ADDITIONAL INDEX WORDS: Trace metals, Pb, Cd, V, marine sediments, mussels, Lebanon.

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Section: Discussion I Geo and Worldwide Comparisons Of Trace Metal Lesupporting

confidence: 81%

Distribution of Lead, Cadmium, and Vanadium in Lebanese Coastal Sediments and Mussels

Abi-Ghanem

Khalaf

Najjar

2014

Journal of Coastal Research

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“…These values, compared to other sediments in the Mediterranean zone and in the world, reflect large anthropogenic inputs (Table 4). High Pb concentrations in the Dora sediments have been detected previously (Shiber, 1980;Nassif, 2004). These high concentrations are consistent with the high Pb level in water, up to 360 ng L -1 , measured by Nakhlé (2003), while natural concentrations in Mediterranean waters are lower than 50 ng L -1 .…”

Section: Doramentioning

confidence: 63%

Lead and its isotopes in the sediment of three sites on the Lebanese coast: Identification of contamination sources and mobility

Abi-Ghanem

Chiffoleau

Bermond

et al. 2009

Applied Geochemistry

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Lead concentrations and isotopic composition of sediment samples collected from three sites within the Lebanese coastal zones were measured: at Akkar, Dora and Selaata. Akkar is located far from any direct source of contamination, while Dora and Selaata receive urban and industrial wastes, respectively. Low Pb concentrations (6-16 mu g g(-1)) were detected in the Akkar sediments, and high concentrations of Pb (70-101 mu g g(-1)) were detected in the Dora sediments. Measuring stable isotope ratios of Pb makes it possible to identify the principal sources of Pb in the Akkar sediments as Pb emitted from gasoline combustion and Pb originating from natural sources. On the other hand, Pb stable isotopic ratios in Dora sediments indicate that they are more highly influenced by anthropogenic sources. Isotopic Pb ratios in the Selaata deposits, where Pb concentrations range between 5 and 35 mu g g(-1), have an exceptional radiogenic signature for marine sediments 1.25 < Pb-206/Pb-207 < 1.6 and 0.5, Pb-206/Pb-208 < 0.67, which shows the impact of the phosphogypsum discharged by Selaata's chemical plant. Isotopic Pb analysis applied to EDTA extracts, to test the mobility of Pb, shows that that this mobility is high (>60%) after 24 h of extraction, and that the extracted Pb is less radiogenic than the residual Pb

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“…It is not attempted here to compare or relate metal concentrations in Hermodice carunculata with levels in the sediment, but perhaps some relationship between them exists since these polychaetes do come in contact with bottom sediment much of their life . In April and May of 1978, nearshore sediment was collected from shallow water at several points along the coast of Lebanon and the samples taken from the Beirut area generally showed the highest metal levels (Shiber, 1980b) . Maybe trace element accumulation in polychaetes is related to the levels of certain metals such as copper, calcium, etc ., in the sediment as Ireland (1979) suggested might be the case with earthworms in which accumulation of metals seemed to be influenced by the copper and calcium levels in the soil .…”

Section: Actinia Equina Linnaeus 1767mentioning

confidence: 99%

Metal concentrations in certain coastal organisms from Beirut

Shiber¹

1981

Hydrobiologia

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Trace metal concentrations were determined in six species of intertidal organisms common to the coast of Ras Beirut, Lebanon . Lead, cadmium, nickel, iron, and zinc were highest in the polychaete, Hermodice carunculata, but the eggs of the sea urchin, Arbacia lixula, had similar iron levels and the sea anemone, Actinia equina, had zinc concentrations which also approached levels in the polychaete . The highest copper occurred in the shore crab, Pachygrapsus transversus, while chromium was highest in the eggs of Arbacia lixula . Cystoseira spinosa, the only alga studied, had average copper and iron concentrations similar to those found in the same species in another study . Together with the sea urchin eggs, C. spinosa exhibited the most variable zinc levels in the present investigation . The fish, Thalassoma pavo, which is rather common along the rocky coastal areas of Lebanon, appeared to have fairly high concentrations of certain elements in relation to levels reported in species of fish from other locations .Sewage, garbage, industrial and agricultural waste materials all enter the Mediterranean from Lebanon without prior treatment, which along with increased land erosion, probably contribute substantially to the availability of metals to the biota studied . It is suggested that more work on trace elements in coastal organisms from the eastern Mediterranean basin be undertaken before any conclusive statements are made . Such work should also investigate the various physiological and biochemical factors involved in metal uptake and retention by each species .

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Metal concentrations in marine sediments from Lebanon

Cited by 8 publications

References 24 publications

Distribution of Lead, Cadmium, and Vanadium in Lebanese Coastal Sediments and Mussels

Distribution of Lead, Cadmium, and Vanadium in Lebanese Coastal Sediments and Mussels

Lead and its isotopes in the sediment of three sites on the Lebanese coast: Identification of contamination sources and mobility

Metal concentrations in certain coastal organisms from Beirut

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