氡地质潜势规律研究方法探讨

Study Method on Radon Geological Potential Rules

氡的地质潜势是环境氡研究的重要内容，也是从地质背景出发快速评价氡浓度水平的有效方法。氡析出率是反映氡地质潜势的最好参数。根据放射性元素分布规律、地质背景及放射性元素衰变等，建立了计算氡析出率的理论公式。理论计算结果表明，北京市区氡的地质潜势分为四个不同的区，不同潜势区中室内氡浓度水平发生相应变化。说明通过氡地质潜势规律研究，可以确定室内氡浓度水平潜在高值区。

The research of radon geological potential is an important part of environment radon research and an effective approach of fast evaluating radon level from geology. The radon exhalation rate is used as the basic factor of radon geological potential. On the basis of distribution of radioactive elements and geological background , the theory equation of radon exhalation rate is derived from the decay rule of radioactive elements and gas diffusion. According to the results from calculation by theory equation, the Beijing city is divided into four zones based on radon geological potential. The results from the measurements show that the indoor radon levels are different at four radon geological potential zones and prove that the potential area with high indoor radon level can be determined by research of radon geological potential easily.