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Determination of calcium and magnesium in sea-water using a dynamically coated porous graphitic carbon column with a selective metallochromic ligand as a component of the mobile phase

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Paull, B and Fagan, PA and Haddad, PR (1996) Determination of calcium and magnesium in sea-water using a dynamically coated porous graphitic carbon column with a selective metallochromic ligand as a component of the mobile phase. Analytical Communications, 33 (6). pp. 193-196. ISSN 1359-7337

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Abstract

A simple liquid chromatographic procedure for the separation and detection of magnesium and calcium in saline samples has been developed. A selective colour-forming metallochromic ligand, o-cresolphthalein complexone, was used both to dynamically coat a pH tolerant porous graphitic carbon reverse phase column and also as a component of the mobile phase. The metals were separated by a chelating ion exchange mechanism at pH 10.5 and eluted as coloured chelates, which were detected using direct spectrophotometry at 572 nm. The procedure was applied to the determination of magnesium and calcium in a sea-water sample and the results compared to those obtained using AAS.

Item Type: Article
Keywords: simple liquid chromatographic procedure, separation and detection of magnesium and calcium in saline samples, o-cresolphthalein complexone
Journal or Publication Title: Analytical Communications
Page Range: pp. 193-196
ISSN: 1359-7337
Identification Number - DOI: 10.1039/AC9963300193
Additional Information: © Royal Society of Chemistry 1996.
Date Deposited: 19 Nov 2008 23:59
Last Modified: 18 Nov 2014 03:53
URI: http://eprints.utas.edu.au/id/eprint/8013
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