Low-level determination of Th-isotopes by alpha spectrometry. Part 2: evaluation of methods for dissolution of samples and for test sample preparation

This paper is the second chapter of a piece entitled “Low-level determination of Th-isotopes by alpha spectrometry”. This Part 2 presents the results of the analysis of the first and last steps for Th-isotopes determination by alpha-particle spectrometry: the sample pre-treatment, total dissolution following different methods and lixiviation, and the test sample preparation methods, electrodeposition and microprecipitation, together with a brief analysis of the financial costs of the analyzed methods.