本文介绍一种简单、高灵敏度的空气中总氚量的监测方法。空气先通过一个乙二醇鼓泡吸收器以除去HTO，再通过加热的催化剂，使HT气体氧化为HTO，然后被第二个乙二醇鼓泡吸收器捕集。捕集的氚用液闪法测量。研究了取样流速、相对湿度、采样时间（吸收体积）以及氚的浓度对吸收效率和回收率的影响，并测定了在催化氧化剂上HT的转化效率。本法可用于氚实验室监测，含氚试验设备的氚泄漏率测量及环境监测等。

A simple highly sensitive method for monitoring total tritium in air is described. The air was first passed through an ethylene glycole bubbler to remove HTO

then

over a heated catalyst for oxidizing HT gas to HTO which was cellected in second ethylene glycol bubbler. Tritium was measured by liquid scintillation counter. The interference of absorption efficiency and recovery by sampling rate

relative humidity (R. H.)

sampling time (absorbed volume) and tritium concentration in air were studied. The conversion efficiency of HT on oxidized catalyst has been measured. This method can be applied to monitor of tritium laboratory

measurement of tritium leaking rates from tritium reservoir and survey of environment monitoring etc.