温度及湿度变化对^(222)Rn和^(220)Rn吸附的影响

Influence of Varying Humidity and Temperature Upon the Adsorption of Radon

通过实验测试在不同温度及湿度条件下活性炭对空气中2 2 2 Rn和2 2 0 Rn的吸附。实验结果显示 :在低湿度条件下 ,随温度的升高 ,活性炭对2 2 2 Rn的吸附量降低 ;而2 2 0 Rn的半衰期较短 ,受温度变化的影响较小。随着湿度的提高 ,活性炭对2 2 2 Rn和2 2 0 Rn的吸附量均有不同程度的降低 ,尤其在较高温度和较高湿度条件下活性炭对2 2 2 Rn和2 2 0

On the basis of theoretical analysis, this article describes the experiment of the absorption of Radon 222 Rn and Thoron 220 Rn in air on active charcoal under condition of varying humidity and temperature. The result of experiment shows that, under the condition of lower humidity, the absorption of 222 Rn reduce as the temperature raises. Since the half life of 220 Rn is short, the influence of the temperature is small. But as the relative humidity raises, the absorption of 222 Rn and 220 Rn reduces significantly.