On-Line Trace Enrichment and Determination of Uranium in Waters by Flow Injection Inductively Coupled Plasma Mass Spectrometry

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Abstract:

A flow injection system incorporating a microcolumn of activated alumina was combined with inductively coupled plasma mass spectrometry for on-line trace enrichment and determination of uranium in surface waters and sea water. Deposition of uranium was effected with the use of a basic alumina microcolumn, and injection of nitric acid (250 μL, 2M) served to elute retained species to the ICP. A sample volume of 14 mL resulted in a preconcentration factor of 40, and precision at the 50-ng 1-1 level was 4.5% (RSD). The procedure was applied to mineral waters, river water, and sea water, and accuracy was assessed through either analysis of certified reference waters or recovery experiments.

Keywords: Activated alumina; Flow injection; ICP mass spectrometry; Microcolumn preconcentration; Natural waters; Uranium

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702944028146

Affiliations: 1: Environmental Research Centre, Division of Chemistry, School of Science, Sheffield Hallam University, Sheffield, SI IWB, U.K.; present address: Department of Chemistry, Yazd University, Yazd, Iran 2: Environmental Research Centre, Division of Chemistry, School of Science, Sheffield Hallam University, Sheffield, SI IWB, U.K.

Publication date: November 1, 1994

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