特殊环境中气载放射性物质的监测

MONITORING OF AIR-BORNE RADIOACTIVE MATERIAL IN SPECIAL ENVIRONMENT

本文介绍一种可用于特殊环境下空气中 β放射性气体和 β放射性气溶胶浓度的连续测量方法 ,重点对探测下限、测量范围和测量误差进行了分析。试验和分析表明 ,该方法对 β放射性气体的探测下限为 1 .85Bq/L ,对 β放射性气溶胶的探测下限为 7.4× 1 0 - 3Bq/L ,测量范围跨

In this article, a continuous way for monitoring concentrations of β radioactive gas and the β radioactive aerosol in the air under special environment is introduced. The sensitivity, range and error of the measurement are analyzed. Experiments and analyses showed that in this way, for the β radioactive gas, the measuring sensitivity of 1.85 Bq/L can be reached, for the β radioactive aerosol, the measuring sensitivity is 7.4×10 -3 Bq/L, the measuring range is as large as five orders of magnitude.