Intercomparison of γ-spectrometry analysis of radionuclides between China and Japan in 2012-2013.
An intercomparison of γ-spectrometry measurement and analysis was organized by the Japan Chemical Analysis Center (JCAC), the National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention (NIRP, China CDC), and the Radiation Monitoring Technical Center of Ministry of Environmental Protection, Chinese (RMTC). The main objective of this study was to assess the γ-spectrometry measurement and analysis technology. The JCAC completed the collection and preparation of soil and powdered rice samples. Three laboratories compared the measurement of seven radionuclides that included two samples of (214)Pb, (214)Bi, (208)Tl, (228)Ac, (40)K, (137)Cs, and (134)Cs with γ-spectrometry. During the studies conducted at the laboratory, the calculated value En was found to be the total uncertainty data of the reported activity. Except (134)Cs in powdered rice sample, the calculated En between each of the two laboratories was <1. The measurement results are acceptable except (134)Cs; therefore, measurement results in the three laboratories were consistent within a certain range except in the case of (134)Cs. Although there is a need to improve the accuracy of measurements and analysis of (134)Cs, an intercomparison was conducted of the tested levels on radionuclide analyzed in the three laboratories.
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Qiang
Q
Zhou
Hospital for Occupational Diseases Control of Shenzhen City, 70 Guiyuanbei Street, Shenzhen 518001, China.
Xiaoqiang
X
Wang
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Fei
F
Tuo
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Yanqing
Y
Han
Japan Chemical Analysis Center, 295-3, Sanno-cho, Inage-ku, Chiba 263-0002, Japan.
Yoshihiro
Y
Ikeuchi
Radiation Monitoring Technical Center of Ministry of Environmental Protection, Chinese, 306 Wenyi Road, Hangzhou 310012, China.
Jia
J
Yang
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Cuihua
C
Xu
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Jing
J
Zhang
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Wenhong
W
Li
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China.
Qing
Q
Zhang
National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Key Laboratory of Radiological Protection and Nuclear Emergency, 2 Xinkang Street Deshengmenwai, Beijing 100088, China. Electronic address: suxu@nirp.cn.
Xu
X
Su
D002588:Cesium Radioisotopes / Q000032:analysis; D002681:China; D005507:Food Contamination, Radioactive / Q000032:analysis; D006801:Humans; D007564:Japan; D012275:Oryza / Q000737:chemistry; D011834:Radiation Monitoring / Q000379:methods / Q000706:statistics & numerical data; D011835:Radiation Protection; D011868:Radioisotopes / Q000032:analysis*; D012990:Soil Pollutants, Radioactive / Q000032:analysis; D013051:Spectrometry, Gamma / Q000379:methods* / Q000706:statistics & numerical data
D002588:Cesium Radioisotopes; D011868:Radioisotopes; D012990:Soil Pollutants, Radioactive
Intercomparison; Radioactive nuclides; Rice; Soil; γ-spectrometry