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Title: Concentrations of heavy metals in roadside soils, plants and land-snails from the West Bank, Palestine
Authors: Swaileh, Khalid
Rabay'a, Nawal
Salim, Radi
Ezzughayyar, Ademar
Abed Rabbo, Alfred
Issue Date: 2001
Publisher: Taylor & Francis
Abstract: Concentrations of Cu, Cd, Pb and Zn were determined in roadsidesoil, plant and landsnail samples along Nablus-Ramallah main road inthe West Bank. Average concentrations (mg.g 1, dry weight) of the four metals in soil samples were, Cu: 23.8, Zn: 128.3, Cd: 0.45 and Pb: 149.9. These values were higher than those found in soil samples collected from control sites. Metals in roadside plant samples were within normallevels although plants from control sites were found to have slightlyless metals. Different parts of a plant (roots, stem & leaves) were foundto accumulate metals in different concentrations. The average concentration(mg.g 1) of metals in different plant parts were: Cu: <5.2,Cd: <1.0, Pb: <2.19 and Zn: <5.18. Average concentrations (mg.g 1)of metals in the three roadside snails were ranging between 121–132 for Cu, 18–27 for Cd, 21–24 for Pb and 43–69 for Zn. Snails were found to magnify Cd to serious levels (>30–50 times higher than in plants and soils). Lead in snails was about 10 times higher than that in plant leaves and much less than that in roadside soils. Other metals in snails did not show abnormal concentrations.
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