采用仪器中子活化分析法测定典型日本饮食标准参考物质中的多种元素。
Determination of multielements in a typical Japanese diet certified reference material by instrumental neutron activation analysis.
作者信息
Suzuki Shogo, Okada Yukiko, Hirai Shoji
机构信息
Faculty of Engineering, Musashi Institute of Technology, 1-28-1, Tamazutsumi, Setagaya, Tokyo 158-8557, Japan.
出版信息
Anal Sci. 2003 Aug;19(8):1215-7. doi: 10.2116/analsci.19.1215.
Multielements in a typical Japanese diet certified reference material prepared at the National Institute for Environmental Studies (NIES) of Japan, in collaboration with the National Institute of Radiological Sciences (NIRS) of Japan were determined by instrumental neutron activation analysis (INAA). Five samples (ca. 510-1000 mg) and comparative standards were irradiated for a short time (10 s) at a thermal neutron flux of 1.5 x 10(12) n cm(-2) s(-1) (pneumatic transfer) and for a long time (6 h) at a thermal neutron flux of 3.7 x 10(12) n cm(-2) s(-1) (central thimble) in the Rikkyo University Research Reactor (TRIGA Mark-II, 100 kW). The irradiated samples were measured by conventional gama-ray spectrometry using a coaxial Ge detector, and by anti-coincidence and coincidence gamma-ray spectrometry with a coaxial Ge detector and a well-type NaI(Tl) detector. The concentrations of 38 elements were determined by these methods.
日本国立环境研究所（NIES）与日本国立放射科学研究所（NIRS）合作制备的一种典型日本饮食认证参考物质中的多种元素，通过仪器中子活化分析（INAA）进行了测定。五个样品（约510 - 1000毫克）和对照标准品在立命馆大学研究反应堆（TRIGA Mark-II，100千瓦）中，以1.5×10¹² n cm⁻² s⁻¹ 的热中子通量进行短时间（10秒）辐照（气动传输），并以3.7×10¹² n cm⁻² s⁻¹ 的热中子通量进行长时间（6小时）辐照（中心指形电离室）。辐照后的样品通过使用同轴锗探测器的常规伽马射线光谱法，以及使用同轴锗探测器和井型碘化钠（铊）探测器的反符合和符合伽马射线光谱法进行测量。通过这些方法测定了38种元素的浓度。
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