不脱色猝灭校正法测定尿中氚scr

采用尿氚不脱色猝灭校正法对10人尿样在加氚制样后直接进行液闪测量,同时与常规蒸馏脱色法进行比较。结果表明,当α=0.05时,2种方法的测量结果没有明显差异。但不脱色猝灭校正法在操作上仅需时4min,适于短时间内大规模尿氚检测,可作为核设施工作人员尿氚常规监测的主要方法。

Measurement of Tritium in Human Urine Samples by Color-Quenching Calibration and Liquid Scintillation Method

The urine samples from ten persons added with tritium were prepared with color-quenching calibration and measured by liquid scintillation counting.This method was compared with that of distillation decoloration.Results obtained at the significance level of 0.05 show that there is no significant difference between two methods.The color-quenching calibration only needs about 4 min in pretreating per sample,and that fits massive urine tritium monitoring in brief time.Therefore,color-quenching calibration could be used as the main method to routine monitoring of tritium in urine samples of the workers in nuclear facilities.