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High-performance chelation chromatography of metal ions on sorbents with grafted iminodiacetic acid
journal contributionposted on 2023-05-16, 20:00 authored by Nesterenko, PN, Shpigun, OA
The chromatographic behavior of some alkaline-earth, transition, heavy, and rare-earth metals on a number of complexing sorbents containing surface iminodiacetic acid (IDA) functional groups is studied. The conditions under which metal retention is determined by complexation on the sorbent surface were established, and the main principles of a new variant of the liquid chromatography, i.e., high-performance chelation ion chromatography (HPCIC), are formulated. The efficiency and selectivity of separation of the metal ions are considered depending on the type of the IDA bonding, the sorbent matrix parameters, the eluent composition, and the temeprature of the chromatographic column. Under optimal conditions, the metal retention is shown to linearly correlate with the stability constants of the respective complexes in the double-logarithmic scale. The application of HPCIC to the analysis of multicomponent systems is considered.
Publication titleRussian Journal of Coordination Chemistry
Department/SchoolSchool of Natural Sciences
PublisherMAIK Nauka - Interperiodica
Place of publicationRussian Federation