Article

Journal of Radioanalytical and Nuclear Chemistry

, Volume 281, Issue 1, pp 113-117

234U and 238U in mineral water: reference value and uncertainty evaluation in the frame of an interlaboratory comparison

  • Y. SpasovaAffiliated withEuropean Commission, Joint Research Centre, Institute for Reference Materials and Measurements Email author 
  • , L. BenedikAffiliated withEuropean Commission, Joint Research Centre, Institute for Reference Materials and Measurements
  • , M. VasileAffiliated withEuropean Commission, Joint Research Centre, Institute for Reference Materials and Measurements
  • , M. BeyermannAffiliated withBundesamt für Strahlenschutz
  • , U. WätjenAffiliated withEuropean Commission, Joint Research Centre, Institute for Reference Materials and Measurements
  • , S. PomméAffiliated withEuropean Commission, Joint Research Centre, Institute for Reference Materials and Measurements

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Abstract

In 2007/2008 the Institute for Reference Materials and Measurements (IRMM) organised an interlaboratory comparison (ILC) on the determination of 226Ra, 228Ra, 234U and 238U activity concentrations in mineral water. This paper describes the determination of the reference values for the activity concentrations of 234U and 238U by radiochemical separation and α-particle spectrometry performed at two independent laboratories. The experimental uncertainty of the reference values is discussed in detail.

Keywords

Natural radioactivity Uranium Mineral water Reference value Uncertainty