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AselectivitystudyoftheexaminationofradionuclidesCesium-137 for foodsbasedondifferentdetectionconditions |
CAO Yi-yao, XUAN Zhi-qiang, YU Shun-fei, ZHAO Yao-xian, LI Xin-xing
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TheCenterforDiseaseControlandPreventionofZhejiangProvince,Hangzhou,Zhejiang,310051,China |
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Abstract ObjectiveA selectivity study was conducted through the examination of radionuclides 137Cs (Cesium-137) for food based on different detection conditions.MethodsA total of 48 food samples were selected from three areas including Qinshan nuclear power plant, Sanmen nuclear power plant and Hangzhou and Zhoushan respectively.137Cs of these samples were determined by γ spectrometry and Phosphoric acid ammonium molybdate method. The level of 48 foods were statistically analyzed, and then the time consuming, sample size requirements, influence factors were comprehensively discussed, thus the selection reference proposal of the examination method could be provided.ResultsThere were no significant difference for the data of two examination method (P>0.05). The limit of detection of the γ spectrometry was lower (P<0.05). Compared with Phosphoric acid ammonium molybdate method, γ spectrometry had lower limit of detection, and could detect a variety of radionuclides at a time, but need more sample and time-consuming when multi-sample were detected. The limit of detection of the Phosphoric acid ammonium molybdate method was high, and the chemical processing steps were cumbersome and was easy to be interfered by 134Cs.ConclusionThe limit of detection of the γ spectrometry is low, and the sensitivity of the Phosphoric acid ammonium molybdate method is high. Most food are recommended to be detected by γ spectrometry in the practical work, and the food which were difficult collected, less ash or low content,are recommended to be detected by Phosphoric acid ammonium molybdate method.
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Received: 11 December 2015
Revised: 22 January 2016
Published: 05 January 2018
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[1] IAEA.Cytogenetic Analysis for Radiation Dose Assessment[R].Vienna:IAEA,2001:127. [2] 白玉书,黄绮龙,关树荣,等.哈尔滨1-28 60 Co源放射事故受照者的生物剂量估算[J].中华放射医学与防护杂志,1999,19(6):392-393. [3] RAMALHO A T, NASCIMENTO A C. The fate of chromosomal aberrations in 137Cs-exposed individuals in the Goiania radiation accident[J]. Health Phys,1991,60(1):67-70. [4] 杨占山,涂彧.放射医学教程[M].北京:原子能出版社,2008:110. [5] 国家技术监督局,中华人民共和国卫生部.GB/T 16145—1995生物样品中放射性核素的γ能谱分析方法[S].1996. [6] 中华人民共和国卫生部.GB 14883.1-94食品中放射性物质检验[S].北京:中国标准出版社,1994. [7] 中华人民共和国卫生部. GB 14883.10-94食品中放射性物质检验铯-137的测定[S].北京:中国标准出版社,1994. [8] 徐翠华,范瑶华,周强,等.核辐射突发事件中食品和水的γ能谱检测与评价方法[J].中华放射医学与防护杂志,2009,29(6):634-638. [9] 吕魁,黄福琴,黄淑琳.生物样品中铯-137活度浓度的两种分析方法比较[J].中国辐射卫生,2007,16(1):98-99. |
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