Abstract

A method for the simultaneous ICP-MS determination of α- and β-emitting radionuclides in acid digested samples of concrete without further sample pretreatment is presented. Spectral and non-spectral interferences are corrected for by combining systematic internal standardization with bilinear multivariate calibration. Consequently, especially for radionuclides with long half-lives, ICP-MS is an alternative to radiometric analytical methods. The optimal multivariate calibration approach is the PLS1-model with preselected variables.

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