Received July 24, 2001,Revised September 28, 2001, Accepted , Available online

Volume 14,2002,Pages 464-473

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Environmental chemical study were carried out on theFatimid cemetery marsh at Aswan city(24*1'N and 32*9'E), Egypt.Marsh contents(warter, soil, sediment, metal and nonmetal-bearing salts, and emergent weed) were analysed to known the source ofmarsh water, speciation of the different elements between the marshcontents, and the toleration of emergent weed(Phargmitesaustralies) for different metals and their bioaccumulationcoefficients. Thus, metals(Ca, Mg, Na, K, Ni, Fe, Mn, Cu, Zn, Cdand Pb) and nonmetals(CO32-, HCO3-, Cl-, SO42-, PO43-, NO3-, SiO2, organicmatter and pH value) were determined in the samples. According tothe chemical analysis, and applying the base exchangeequation(water type) and calculate the hydrochemical parameters for marsh water samples, we can indicate that the marsh water isground water with Na-SO4 type and deep meteoric genesis. Topsoil ofmarsh dry land characterized by CaCl as dominant salt,while NaCl isa dominant salt in subsoil. The elevated pH values of marshcontents minimized the metal solubilities in different samples.Phragmites australies showed a strong ability to accumulate Mn (Fein the aerial part in opposite to Co, Ni and Cd.

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