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一、前言氡及其子体产物是一种有害的放射性气体,它们不仅存在于铀矿山的坑道和矿山环境的大气中,且在远离矿山的城市广大居民区,它们在空气中的含量也是相当可观的。如果人体长期吸入这些放射性气体,将可引起肺癌的危险。而且,发现氡的子体产物对人体的危害,又更甚于氡气本身。因此,从五十年代初开始,人们就不断地研究各种方法并采用各种技术,对氡及其子体产物进行区域性的或个体的监测。特别因为氡的子体产物比氡的危害更大,所以人们对氡子体产物的监测技术更感兴趣。特别随着核工业的发展和新工艺的推广,氡及其子体产物的测
I. INTRODUCTION Radon and its daughter products are a form of harmful radioactive gases that not only exist in the atmosphere of tunnels and mining environments in uranium mines but also in the air in vast residential areas far away from the mines Considerable. Long-term human inhalation of these radioactive gases can cause the risk of lung cancer. Moreover, the progeny of radon was found to be more harmful to humans than radon itself. Therefore, since the early 1950s, people constantly studied various methods and adopted various technologies to carry out regional or individual monitoring of radon and its progeny products. Especially because radon progeny products are more harmful than radon, people are more interested in monitoring radon progeny products. In particular, with the development of nuclear industry and the promotion of new technology, measurement of radon and its daughter products