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METHOD FOR QUICKLY AND EASILY MEASURING CONCENTRATION OF CADMIUM CONTAINED IN MINUTE AMOUNT IN FOOD BY USING PROMPT GAMMA-RAY ANALYSIS

机译:瞬发伽玛射线分析法快速简便地测定食品中微量镉的含量的方法

摘要

PROBLEM TO BE SOLVED: To contribute to food sanitation fields by enabling to rapidly and easily measure Cd concentration in foods without special techniques because of such advantages that chemical preparations and the like are not needed.;SOLUTION: In a prompt gamma-ray analysis, a provided method reduces influence of Compton components of H acting as noise factors by cutting neutrons in a region lower than a peak value of an absorption cross-sectional area of Cd by using a Gd foil or a chopper. Alternatively, in accordance with focusing on a phenomenon that 113Cd simultaneously emits two prompt gamma-rays with high intensity, a provided method does not detect gamma-ray from H by combining a multiple gamma-ray detecting method and the prompt gamma-ray analysis method.;COPYRIGHT: (C)2004,JPO
机译:解决的问题:由于不需要化学制剂等优点,无需特殊技术即可快速轻松地测量食品中的Cd浓度,从而为食品卫生领域做出贡献;解决方案:在快速的伽马射线分析中,所提供的方法通过使用Gd箔或斩波器在低于Cd的吸收截面积的峰值的区域中切割中子来减小用作噪声因子的H的康普顿成分的影响。可替代地,针对于 113 Cd同时发射两个高强度瞬发伽马射线的现象,所提供的方法不能通过结合多种伽马射线检测方法来检测来自H的伽马射线。以及快速的伽马射线分析方法。版权所有:(C)2004,日本特许厅

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