日本福岛核事故后归国人员体表放射性核素污染检测分析

Analysis of Body Surface Radionuclide Contamination of the Persons Returned from Japan after Fukushima Nuclear Disaster

[目的]对日本核事故后的归国人员进行体表放射性核素污染检测与分析。[方法]对可疑受污染人员进行护照号、航班号、身份证等证件的核查,以确定受检人员为日本归国人员;对其进行α、β和γ放射性核素污染检测。[结果]日本核事故后的归国人员体表放射性核素污染程度接近本底水平,远低于《人员体表放射性污染处理技术方案(试行)》中天然本底3倍以上判断标准,且各检测组(包括检测地点本底)之间比较中α、β和γ放射性核素污染检测结果差异均无统计学意义(P>0.05)。[结论]日本核事故后的归国人员体表放射性核素污染接近本底水平,未构成健康危害。

[ Objective ] To detect and analyze the radionuclide contamination on body surface of the persons returned from Japan after the nuclear leak accident. [ Methods ] Personnel passport numbers, flight numbers, identity cards and other documents were verified for screening the returnees from Japan. Alpha, beta and gamma radionuclide contamination were detected among the suspected persons. [ Results ] The levels of surface radionuclide contamination of returnees were close to the background level and much less than 3 times of the natural background level provided in Treatment program of radionuclide contamination on body surface issued by Chinese Center for Disease Control and Prevention. There were no significant differences in α, β and γ radioactive contamination levels among the test groups （including the site background group） （P〉 0.05）. [ Conclusion ] The levels of radionuclide contamination on body surface of returnees from Japan after the nuclear leak accident were close to the natural background and did not pose any health hazards.