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云锡矿山坑下矿石组份以铁为主,同时伴生多种有色金属及微量放射性元素。 长期从事坑下作业的人群,肺癌发病率为无坑史人群的32.3倍。研究结果表明,肺癌发病率与所接触的矿石含砷量以及坑下空气中的氡及其子体潜能值有极显著的正相关关系。 氡来源于镭~(226)的蜕变,是一种放射性气体。氡及其子体被吸入呼吸器官以后,能沉积于肺泡和支气管壁上。长期反复沉积,可使支气管上皮基底细胞遭受α粒子的电离辐射损伤而诱发肺癌。 为了查明坑下作业环境空气中氡的来源,我们对坑下的各种矿物、岩石进行了氡析出率
Yunxi mine pit ore components to iron-based, accompanied by a variety of non-ferrous metals and trace radioactive elements. People engaged in pit work for a long time, the incidence of lung cancer was 32.3 times of the population without Pit. The results showed that there was a significant positive correlation between the incidence of lung cancer and the content of arsenic in the ore and the potential energy of radon and its progenies in the pit. Radon from radium ~ (226) transformation, is a radioactive gas. After radon and its progeny are inhaled into the respiratory organs, they can deposit on the alveoli and the bronchial wall. Long-term repeated deposition, bronchial epithelial cells can suffer from ionizing radiation damage α particles induced lung cancer. In order to find out the source of radon in the air under the working environment, we conducted a radon exhalation rate for various minerals and rocks under the pit