中文摘要：

采用RAD-7型测氡仪对焦作市室内氧浓度进行调查.焦作室内氡浓度范围为19.2～ 160.5 Bq/m3,平均浓度为62.94 Bq/m3.采用氡剂量学评价方法,得出焦作室内氡年平均有效剂量为1.98mSv,同时评估焦作市因接受室内氡辐射剂量引起的终生肺癌危险度为1.53 × 10-4.

英文摘要：

This article intends to present our assessment of the influ- ence of indoor radon on the human health in Jiaozuo city, Henan. In our work, we have carried out a statistical investigation of the air radon level in 33 indoor and outdoor cases in the city by using a rad - 7 emanometer in 2008. As a result, we have found that the indoor radon concentration in the city ranges from 19.2- 16015 Bq/m3, with the annual average concentration being 62.94 Bq/m3. h means that the average indoor radon level of the city is not only higher than that of the country（ 12.6 Bq/m3）, but also higher than that of the world（48 Bq/m3）. The highest indoor concentration proves to be 82.5 Bq/m3 in April whereas the lowest in the city is 62.9 Bq/m3 in July. In addition, it is found that the outdoor radon average concentration of the city is 9.2 Bq/m3, much higher than the world average of 3.6 Bq/m3 and slightly lower than the average of the country（ 12.6 Bq/m3）. By using the radon dosimetry assessment method, we have found that the indoor radon annual effective dose is 1.98 mSv in Jiaozuo, which means 1.43 times higher than that of Belling, and 2.93 times as much as that of the Province, and 1.88 times as high as that of Zhengzhou. As to the indoor annual effective dose in radia- tion of 0.916 mSv）, the city is not only higher than the average level of the country but also higher than that of the Province（0.68 mSv）, though merely slightly higher than the average level of the world （1.0 mSv）, though the annual effective dose of the city still lies within the range of the annual dose of public safety （ 〈 5 roSy/a）. Based on the above-mentioned estimation, it would be possible to estimate that the risk coefficient to be exposed to the life-long lung cancer （1.53×10^-4） in Jiaozuo, due to the exposure of the local people to the radon radiation dosages. In other words, 1 - 2 persons per million of the city are exposed to the jeopardy of the lung cancer. Although the risk coefficient of leading to life-long lung ca