Abstract
Sediment samples from the Romanian sector of the Danube River and the Black Sea coast were analyzed for Pu and Am. Three different ways of bringing the samples into solution were tested: acid attack, microwave digestion and alkaline fusion. A conventional anion-exchange resin was used to separate plutonium from other radionuclides and several variants were tried to improve the separation of americium. The preparation of thin sources for alpha-spectrometry was tested through electrodeposition and coprecipitation with Nd(III). Discussion and recommendations for the dissolution step, the americium separation and preparation of alpha sources are made.
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