Metal Binding Studies of Organic Materials in Water Systems

摘要

The chemical speciation of trace metals in aquatic environments play a key role in their transport, chemical reactions, and biological availability. The nature and concentration of a given trace metal in solution is most important in determining its speciation. This research developed a technique for the quantitation of metal complexes in natural water samples. Using modified size-exclusion chromatography and reversed-phase ion-pair chromatography, metal complexes were separated and detected using an electrochemical flow-cell detector. Polyaminocarboxylic acids used in developing the technique were DTPA, EDTA, and NTA.