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为了克服放射性甲基碘法的放射性操作的缺点,开展了非放射性甲基碘(CH3127I)进行碘吸附器性能评价的研究。本文主要介绍该研究的关键技术:即非放CH3127I分析方法的建立。通过实验比较了多种检测灵敏度较高的CH3127I分析方法,最终推荐CH3127I经色谱纯无水乙醇吸收-气相色谱分析方法,该方法吸收液最低定量检测限为0.006 7μg/m L,试验时注入系统CH3127I量仅占其设计吸附容量的2.0%,对碘吸附器吸附CH3131I性能无显著影响,建立的CH3127I分析方法应用于碘吸附器性能评价是可行的。
In order to overcome the shortcomings of radioactive methyl iodine irradiation, a non-radioactive methyl iodide (CH3127I) iodine adsorption performance evaluation. This article mainly introduces the key technology of this research: The establishment of non-release CH3127I analysis method. Through the experimental comparison of a variety of high sensitivity CH3127I analysis method, the final recommended CH3127I chromatographic pure ethanol absorption - gas chromatography method, the detection limit of the method of liquid minimum quantitation 0.006 7μg / m L, the test system The content of CH3127I accounted for only 2.0% of the designed adsorption capacity, and had no significant effect on the performance of iodine adsorber adsorbing CH3131I. The established CH3127I analysis method is feasible for the performance evaluation of iodine adsorbers.