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An unmodified silica gel (Develosil 30-5) column (150×4.6 mm I.D.) has been applied to the ion chromatographic separation of alkali, alkaline earth and transition metal cations. The retention behavior of the above cations on the bare substrate was investigated using a number of weak inorganic and organic acid eluents. During this investigation, several separations were achieved and the most suitable eluent conditions were identified. It was concluded that: (a) 1.5 mM HNO3-0.5mM pyridine-2,6-dicarboxylic acid eluent was the most effective for the simultaneous separation of common alkali and alkaline earth metal cations, (b) 1.5 mM oxalic acid eluent resulted in the best separation of alkali, alkaline earth, and transition metal cations, (c) 0.5 mM CuSO4 eluent could be used for the separation of alkali metal cations alone and (d) 0.5 mM ethylenediamine-oxalic acid eluent at pH 5.5 resulted in themost efficient separation of both alkaline earth and transition metal cations.

Item Type:	Refereed Article
Research Division:	Chemical Sciences
Research Group:	Analytical chemistry
Research Field:	Instrumental methods (excl. immunological and bioassay methods)
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in the chemical sciences
UTAS Author:	Ohta, K (Dr Ohta)
UTAS Author:	Tanaka, K (Dr Kazuhiko Tanaka)
UTAS Author:	Paull, B (Professor Brett Paull)
UTAS Author:	Haddad, PR (Professor Paul Haddad)
ID Code:	12374
Year Published:	1997
Web of Science® Times Cited:	17
Deposited By:	Chemistry
Deposited On:	1997-08-01
Last Modified:	2010-03-01
Downloads:	0