Simplified alpha-spectroscopic analysis of uranium in natural waters after its separation by cation-exchange
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A relatively rapid, economic and robust procedure is described for the alpha-radiometric analysis of natural waters. The analysis is performed by alpha-spectroscopy after pre-concentration and separation of uranium by cation-exchange (Chelex-100) and finally its electrodeposition on stainless steel discs. The method has been successfully applied to 100 ml samples of natural waters (e.g. ground- and seawaters) resulting in high-quality spectra for measurement times less than 34 h. In addition, a main advantage of the procedure (particularly for routine measurements) is that there is no consumption of organic solvents and multiple recycling/reuse of the resin is possible. © 2010 Elsevier Ltd. All rights reserved.