Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 65(4): 181-190 (2016)


玄米試料を用いた放射能測定の技能試験Proficiency Test of Radioactivity Measurement Using Samples of Brown Rice

1産業技術総合研究所分析計測標準研究部門National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology ◇ 305–8568 茨城県つくば市梅園1–1–1 ◇ 1–1–1 Umezono, Tsukuba-shi, Ibaraki Pref. 305–8568, Japan

2農業・食品産業技術総合研究機構食品総合研究所National Food Research Institute, National Agriculture and Food Research Organization ◇ 305–8642 茨城県つくば市観音台2–1–12 ◇ 2–1–12 Kannondai, Tsukuba-shi, Ibaraki Pref. 305–8642, Japan

受付日:2015年7月6日Received: July 6, 2015
受理日:2016年1月8日Accepted: January 8, 2016
発行日:2016年4月15日Published: April 15, 2016


A proficiency test for radioactivity measurements of 134Cs and 137Cs by γ ray spectrometry was conducted in May and June 2013. Reference values in the proficiency test were validated by comparison with other international and domestic calibration institutes. A result of the proficiency test showed small deviation between the reference values and most of reported values from participants. Signals which urged check for their measurement were issued to values which have large deviation. The proficiency test clearly showed technical quality of participant for the radioactivity measurement.

Key words: Proficiency test; Radioactivity measurement; Validation; International comparison; Caesium 134; Caesium 137

This page was created on 2016-02-17T14:38:01.602+09:00
This page was last modified on 2016-04-12T14:23:38.930+09:00