一种高效的硅胶中氚化水自动化解析技术

文章介绍采用温度自动控制的铸铝加热方式提取硅胶中氚化水的一种高效节能解析技术,并通过实验验证表明,该解析技术对硅胶吸附氚化水样品的最佳解析时间为15 min,此时100 g饱和硅胶样品至少能解析水7～10 mL用于液闪测量,对硅胶中氚化水的平均回收率优于99%,氚记忆效应小于万分之二。该技术与GB12375-90标准提出的氚蒸馏技术相比,具有能同时处理多个样品,可提高硅胶氚吸附样品前处理制样效率、节约能源等特点。

Study on a New Tritium Distillation-collect Technique

In this study,a tritium distillation-collect system has been constructed for silica gel adsorbing-tritiated water sample with a novel structure,autocontroned temperature technique and aluminum founding materials.A series of experiments are completed which showed the best sample treatment time was 15min,allowing a desorption water quantity of 7～10ml for liquid scintillation analysis and the average recycle efficiency could reach 99%.The system which is designed to handle multi-sample simultaneously,The whole performance has been confirmed,and silica gel adsorbing-tritiated water sample has been operated in the system.