尿中氚化水及有机氚浓度的测定方法及结果比较

Study on Measurment and Comparative Analysis of Tritium Oxide and Organic Tritium in Urine

目的为涉氚工作人员摄入体内的氚寻找一种快速、方便而又可靠的常规监测方法。方法采用常规蒸馏脱色、高锰酸钾祛色蒸馏法、双氧水氧化脱色和过硫酸钾氧化法四种方法预处理尿样后进行液闪测量,统计分析四者测量结果。结果经上述四种不同尿样预处理后测得的尿氚结果有显著性差异,不是所有方法均可用于核设施工作人员及涉氚工作人员体内氚化水及有机氚的检测。结论从测量结果来看,高锰酸钾祛色蒸馏法适合对氚化水的测量;过硫酸钾氧化法更加适合用于总氚的测定。在需要快速处理大批量样品的时候,可使用双氧水氧化法。

Objective To explore a fast, convenient and reliable sample preparation and measurement methods for staffs engaged in tritium. Methods The conventional distillation, potassium permanganate distillation, hydrogen peroxide bleaching, and persulfate oxidation method are used to do pretreatment of urine , then liquid scintillation measurements were made, all the results of the four measurements were analyzed. Results Among the above - mentioned four different urine samples measured after pretreatment of urine tritium , there was a significant difference in the results. Not all methods can be used for nuclear facilities, staff and related staff in vivo tritium of water and organic testing. Conclusion From the measurement accuracy in terms of potassium permanganate distillation, the method is suitable for the measurement of tritiated water ; persulfate oxidation method is more suitable for the determination of the total tritium. To process rapidly processing large quantities of samples, you can use hydrogen peroxide oxidation method.