Issue 11-12, 1999

High-performance chelation ion chromatography of transition and heavy metal ions on polystyrene–divinylbenzene resin dynamically modified with 4-chlorodipicolinic acid

Abstract

A neutral polystyrene–divinylbenzene column, combined with 4-chlorodipicolinic acid present in the mobile phase, has been developed as a chromatographic system for the high efficiency isocratic separation of transition and heavy metal ions. Retention arises from the formation of a stable dynamically coated chelating stationary phase, the capacity of which is dependent upon both the pH and ligand concentration in the eluent. The results obtained illustrate the increased loading and selectivity of this chlorinated chelating molecule in comparison with unsubstituted dipicolinic acid, exemplified by the separation of 7 metals in under 8 min. The column also displayed a strong affinity for CdII and an unusual retention for NiII, which showed a good symmetrical peak shape.

Article information

Article type
Paper

Anal. Commun., 1999,36, 399-401

High-performance chelation ion chromatography of transition and heavy metal ions on polystyrene–divinylbenzene resin dynamically modified with 4-chlorodipicolinic acid

M. J. Shaw, S. J. Hill, P. Jones and P. N. Nesterenko, Anal. Commun., 1999, 36, 399 DOI: 10.1039/A908318I

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements