ABSTRACT
I. INTRODUCTION Synthetic chelators have a broad technical application worldwide. Because of their ability to form stable complexes with multivalent cations, they can change the effective chemical and physical properties of metal ions. This effect of ethylene dinitrilotetraacetate (EDTA) has been used for numerous purposes, including analytical procedures, medical detoxification, industrial production, food processing, and water softening. EDTA has also found its way into the environment [1]. Natural aquatic systems have especially been polluted by this poorly biodegradable compound and its metal complexes. As a consequence, the fate of heavy metals in the environment must be considered. In particular, changes in sediment-water distribution, transport characteristics, and the bio availability of EDTA-complexed heavy metals must be expected.
