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Determination of trace uranyl in saline samples using chelation ion chromatography


Paull, B and Haddad, PR, Determination of trace uranyl in saline samples using chelation ion chromatography, Analytical Communications, 35, (1) pp. 13-16. ISSN 1359-7337 (1998) [Refereed Article]

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Copyright Royal Society of Chemistry 1998.

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DOI: doi:10.1039/a707971k


A liquid chromatographic method for the determination of trace levels of UO22+ in highly saline samples has been developed. A polystyrene divinylbenzene reversed-phase column was impregnated with methylthymol blue, resulting in a chelating stationary phase. An isocratic method, using a 0.5 M KNO3, 40 mM HNO3 eluent, allowed the direct injection of up to 0.2 ml of a saline sample, with UO22+ eluting away from the sample matrix peak in under six minutes. The development of an eluent step gradient procedure, using a step up from 6 mM HNO3 to 60 mM HNO3, allowed sample injection volumes of up to 2 ml without substantial peak broadening and resulted in a detection limit for UO22+ of less than 1 g l1, in samples containing massive excesses of matrix metals. The procedure was applied to the determination of trace UO22+ in a saturated saline Antarctic lake sample. The results obtained compared well with those obtained using ICP-MS.

Item Details

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:Paull, B (Professor Brett Paull)
UTAS Author:Haddad, PR (Professor Paul Haddad)
ID Code:14143
Year Published:1998
Web of Science® Times Cited:8
Deposited By:Chemistry
Deposited On:1998-08-01
Last Modified:2010-02-22

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