title: A review of nationwide radioactivity comparisons on gamma-ray spectrometry organized by the NIRP, China.
abstract: Six comparison exercises on radioactivity measurement by γ-spectrometry have been organized by NIRP in China since 2007. The type of measured nuclides changed from natural to man-made over this period. A total of 188 samples were prepared and distributed to 39 different participating laboratories and 528 radionuclide assays have been performed. A perceptible laboratory performance improvement was observed with the average percentage of acceptable scores being 87% in 2008, increasing to 92% in 2012.
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Tuo
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Cuihua
authors.initials: C
authors.lastname: Xu
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Wenhong
authors.initials: W
authors.lastname: Li
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China. Electronic address: suxu@nirp.cn.
authors.forename: Xu
authors.initials: X
authors.lastname: Su
keywords: Comparison; Radioactivity; Radionuclide; γ-Spectrometry