Preparation of water samples for proficiency testing on radionuclides

Appl Radiat Isot. 2015 Sep:103:61-4. doi: 10.1016/j.apradiso.2015.05.021. Epub 2015 May 29.

Abstract

The Institute of Nuclear Chemistry and Technology (INCT) procedure for preparation of water samples for proficiency testing on determination of (241)Am, (137)Cs, (239)Pu, (226)Ra and (90)Sr in water is presented. Natural waters were applied as the raw materials and spiked with the aforementioned radionuclides. The procedure of spiking water allows to prevent losses of the radionuclides and to assign property values from formulation. The main advantages of this procedure are (i) similarity of the test materials to the water samples routinely analysed by radioanalytical laboratories, and (ii) traceable assigned values with low uncertainties.

Keywords: Proficiency tests; Radionuclides; Water.