Affiliations: Chemistry Department, Faculty of Science, Aswan,
Egypt
Abstract: 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 of marsh water, speciation of the different
elements between the marsh contents, and the toleration of emergent
weed(Phargmitesaustralies) for different metals and their bioaccumulation
coefficients. Thus, metals(Ca, Mg, Na, K, Ni, Fe, Mn, Cu, Zn, Cd and Pb) and
nonmetals(CO, HCO, Cl-, SO, PO, NO, SiO_2, organic matter and pH value) were
determined in the samples. According to the chemical analysis, and applying the
base exchange equation (water type) and calculate the hydrochemical parameters
for marsh water samples, we can indicate that the marsh water is ground water
with Na-SO_4 type and deep meteoric genesis. Topsoil of marsh dry land
characterized by CaCl as dominant salt,while NaCl is a dominant salt in
subsoil. The elevated pH values of marshc ontents minimized the metal
solubilities in different samples.Phragmites australies showed a strong ability
to accumulate Mn (Fe in the aerial part in opposite to Co, Ni and Cd.
