摘要
目的 了解私自开采铀矿给家庭成员带来的辐射剂量负担情况 ,估算出被污染民居里生活人群由生活环境带来的年辐射有效剂量 ,为有关政府部门的采取整治行动提供依据。方法 采用LB -12 3多功能辐射测量仪对民居生活环境的外照射辐射水平及表面污染进行检测 ,同时测出住宅内外的2 2 2 Rn及其子体浓度 ,并采集当地生物及水样进行核素分析 ,从而估算出家庭成员的年有效剂量。结果 被污染村民甲家成员年有效剂量为 13 .75mSv。结论 这种私自开采铀矿已造成了被污染环境生活群体的剂量大大超过天然辐射本底的正常水平 ,应予以关注。
Objective To find out the radioactive dose burdens of inhabitants as a result of illegal uranium-mining. Estimate the annual effective dose of the inhabitants who lived in the radioactive contaminated area. Provide basis for the government department concerned to take punishing actions. Methods The radioactive dose level and contamination on surface was determined with LB-123 multilateral function instrument in the life environment. 222Rn and its daughter's potential alpha energy concentration inside and outside the contamindted houses had been determined. Meanwile,we had collected the specimens of food and drinking water to analyse contents of natural radionuclids, thus estimate the annual effective dose of the inhabitants. Results The annual effective dose of inhabitants who lived in contaminated village house A was 13.75 mSv. Conclusion Illegal uranium mining had brought about the fact that the annual effective dose of the inhabitants who lived in contaminated environment was makedly high above the normal level.
出处
《中国辐射卫生》
北大核心
2005年第1期19-20,共2页
Chinese Journal of Radiological Health
