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The presence of heavy metals and nuclear
wastes have raised the level of toxicity in our
environment. The dissolved humic substances complicate the
migration process of metal pollutants. Humic substances may
mask the surfaces of the minerals for reaction with
contaminants. Hence, availability and fate of heavy metals
in the soil are strongly dependent on the extend of their
sorption on hydrated phases. The Present study was focused
on the phenomena of retardation of metal migration through
...

Rapid, selective, more sensitive and well improved spectrophotometric determination methods were developed for low prevailing economically important metals (Zn, Al, Th U, Zr and some toxic metals (Cd , Cr, Ni, Pb) in the presence of surfactants. Suitable chromogenic reagents were used for these determinations. A series of experiments were performed for optimization of important parameters regarding the ternary complexes of the selected metals, organic reagent and surfactants.The reported methods were successfully applied for determination of selected metals in water samples,...