γ谱法监测环境中放射性气溶胶

Radioactive Aerosol in the Monitoring Environment by Gamma Spectrometry

为了更有效地对环境中放射性气溶胶进行监测,探讨了γ谱法测量放射性气溶胶的监测方法。该方法将环境中气溶胶颗粒过滤到滤膜之上,利用配以闪烁体探测器的γ谱仪测量过滤膜上的γ放射性气溶胶颗粒的γ能谱,通过γ能谱解析来获得环境样品中放射性核素类型及其活度。实验结果表明:该方法可有效地监测放射性气溶胶,对环境样品中放射性核素具有一定的鉴别能力。

In order to monitor the radioactive aerosols in the environment more effectively,the method of measuring the radioactive aerosol by using the gamma spectrometry is discussed. To filter environment aerosol particles on the membrane filter,a gamma spectrometer with a scintillation detector to measure the gamma energy spectra of gamma radioactive aerosol particles is used. The type and activity of radionuclides in environmental samples were obtained by the analysis of the gamma energy spectra. Experimental results show that this method can effectively monitor the radioactive aerosol and has a good ability to identify radionuclides in environmental samples.