Homogeneity assessment for grass samples used for organically bound tritium proficiency test. (February 2018)

• Record Type: Journal Article
• Authors: Varlam, Carmen; Bucur, Cristina; Vagner, Irina; Constantinescu, Marius; Bogdan, Diana; Faurescu, Ionut
• Is Part Of: Applied radiation and isotopes. Volume 132(2018:Feb.)
• Page Start: 147
• Page End: 150
• Publication Date: 2018-02
• Subjects: Organically bound tritium -- Homogeneity check -- Inter-laboratory exercise; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2017.11.033
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: The paper presents homogeneity check for dried grass batch to be used in an inter-comparison exercise. When carrying out an inter-comparison exercise, the organizer must guarantee that the unsatisfactory result will not be imputed to the sample and sample's changeability. Therefore, in an inter-comparison exercise must carry on the homogeneity testing. In our study, the homogeneity was checked for two parameters, the hydrogen percentage (%H) and the organically bound tritium (OBT) activity concentration. Ten subsamples of 50 g from bulk material were chosen using a stratified random selection. Two replicates from each package were analyzed for hydrogen content and OBT analysis. The homogeneity parameters were evaluated according to ISO 13528:2015. The two checked properties confirm that the batch of dried grass is sufficiently homogenous. Highlights: The homogeneity check for an inter-comparison exercise grass sample is presented. The assessment is done for hydrogen content and organically bound tritium analysis. The homogeneity parameters were evaluated according to ISO 13528:2015. The checked properties confirm that the batch of dried grass is homogenous.