PERFORMANCE EVALUATION OF COMMERCIAL SCINTILLATION COCKTAILS FOR LOW-LEVEL TRITIUM COUNTING BY HIGH-CAPACITY LIQUID SCINTILLATION COUNTER. Issue 13 (9th September 2022)

• Record Type: Journal Article
• Authors: Kuwata, Haruka; Tazoe, Hirofumi; Kranrod, Chutima; Fujiwara, Kenso; Terashima, Motoki; Matsueda, Makoto; Hirao, Shigekazu; Akata, Naofumi
• Is Part Of: Radiation protection dosimetry. Volume 198:Issue 13/15(2022)
• Page Start: 1014
• Page End: 1018
• Publication Date: 2022-09-09
• Subjects: Radiation dosimetry -- Periodicals; Radiation -- Safety measures -- Periodicals; 363.1799
• DOI: 10.1093/rpd/ncac040
• Languages: English
• ISSNs: 0144-8420

Abstract

Abstract: Low-background liquid scintillation counter is one of the popular measuring instruments used to investigate tritium radioactivity in environmental media. These instruments require the liquid sample and organic solvent to be mixed for tritium measurement. In the European Union, the registration, evaluation, authorization and restriction of chemicals regulation was established to control the use of chemical substances of very high concern. It is important to find continuously available alternative reagents. In this paper, a performance evaluation was conducted using four scintillation cocktails according to Japanese conventional procedure; although one of them, Gold Star LT 2, contains nonylphenol ethoxylate, it will continue to be available for research and development. From the evaluation results it was confirmed that Gold Star LT 2 would be a satisfactory alternative scintillator, which is similar performance of Ultima Gold LLT.