个旧居民肺癌发病率与室内氡关系的探讨

目的 探讨云南个旧地区居民（不包括矿工和冶炼工）肺癌高发的原因。方法 应用固体核径迹探测器（简称SSNTD）方法对土壤、室内氡进行了测定。结果 发现纵贯个旧地区的个旧－小江断裂带提供了丰富的土壤氡的地下来源，在断裂带上测得土壤氡水平为世界土壤氡平均值的8．6倍，断裂带上的室内氡水平是远离断裂带室内氡水平的6．5倍。调查组室内氡平均值比对照组室内氡平均值高出44．5％。分组统计表明，室内氡水平越高，肺癌发病率（除一组例外）相应增高。结论 通过本次调查似乎可以认为肺癌发病率与室内氡水平有呈正相关的趋势。

Research of the Relationship between Indoor Radon and Incidence of Lung Cancer in Gejiu Area

Objective Tesearch the relations between indoor radon and incidence of lung cancer in Gejiu area of Yunnan Province, China.Methods The Solid- State Nuclear Track Detector (SSNTD) . was used to delect the conccmcritions of the radon.Results The indoor radon level of houses situated fault zone is 6.5 times higher than far away fault zone because there are soil radon level 8.6 times higher than far away fault zone. The indoor radon level of 116 cases of lung cancer are 44.5 % higher than 150 contrasts and the incidence of lung cancer raise with that indoor radon level raised. Conclusions It seems that the relationships of the incidence of lung cancer and the indoor radon level trend direct ratio relationship from survey of epideminology.