Ligand Exchange Principles for Trace Enrichment and Selective Detection of Ionic Compounds

Brinkman, U.A.Th.; Irth, H.

doi:10.1007/978-94-009-0777-5_19

Recent Developments in Ion Exchange 1990

DOI: 10.1007/978-94-009-0777-5_19

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Ligand Exchange Principles for Trace Enrichment and Selective Detection of Ionic Compounds

U.A.Th. Brinkman

H. Irth

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Cited by 2 publications

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Ligand sorption kinetics of aromatic amines on new ligand‐exchanger sporopollenin in cobalt ion form

Vural

Ersöz

Pehlivan

1995

J of Applied Polymer Sci

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SYNOPSISAn approach to study of intraparticle ion-exchange kinetics of aromatic amines such as pchloroaniline, p-toluidine, and p-nitroaniline as ligands on Co2+ loaded-ligand exchanger of sporopollenin (carboxylated epichlorohydrine [CEPI-sporopollenin) is presented and the ligand-exchange reaction in the resin matrix is shown to be rate-determining. Kinetic studies of aromatic amines as ligands on the CEP-sporopollenin have been performed using continuous column runs. The observed rate seems to be related to the rate of ligand sorption with the mobile phase (ion) and pH in the aqueous phase. The rate of attainment of equilibrium sorption and breakthrough curves of aromatic amines is seen to be nearly similar. With the sorption mechanism deduced to be dominantly particle diffusion-controlled, diffusion coefficients determined were found to range from 1.10-' to 1.0 lo-' cm2 s-I. Coupled with the fact that different concentrations of solution were employed, these results may be interpreted as indicating that particle diffusion is the rate-determining step; on the contrary, film diffusion was not a rate-controlling step in the ligand-sorption process under the conditions employed. 0 1995 John Wiley & Sons, Inc.

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Ligand sorption kinetics of aromatic amines on new ligand‐exchanger sporopollenin in cobalt ion form

Vural

Ersöz

Pehlivan

1995

J of Applied Polymer Sci

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Hydroquinone modified hyper‐cross‐linked resin to be used as a polymeric adsorbent for adsorption of salicylic acid from aqueous solution

Huang

2011

J of Applied Polymer Sci

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Hydroquinone modified hyper-cross-linked resin (HJ-Y15) was prepared from macroporous crosslinked chloromethylated polystyrene and the adsorption behaviors of HJ-Y15 for salicylic acid were studied from aqueous solution. The results indicated that the surface of HJ-Y15 was modified by formaldehyde carbonyl, quinone carbonyl, and phenolic hydroxyl groups. Freundlich model was suitable for characterizing the isotherms and the adsorption was shown to be an exothermic, spontaneous, and more ordered process. The pseudosecond-order rate equation was appropriate for describing the kinetic curves and the intraparticle diffusion was the rate-controlling step. Hydrogen bonding between formaldehyde carbonyl groups of HJ-Y15 and carboxyl groups of salicylic acid was one of the primary driving forces for the adsorption.

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Ligand Exchange Principles for Trace Enrichment and Selective Detection of Ionic Compounds

Cited by 2 publications

References 16 publications

Ligand sorption kinetics of aromatic amines on new ligand‐exchanger sporopollenin in cobalt ion form

Ligand sorption kinetics of aromatic amines on new ligand‐exchanger sporopollenin in cobalt ion form

Hydroquinone modified hyper‐cross‐linked resin to be used as a polymeric adsorbent for adsorption of salicylic acid from aqueous solution

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