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目的以间接法估算我国四膳食类型地区代表城市成年男子摄入原生放射性核素所致内照射剂量。方法通过双份饭法采集天津、成都、镇江、太原四城市成年男子膳食样品,同时采集该城市大气样品。应用电感耦合等离子体质谱(ICP-MS)测定并计算Rb、U、Th等元素摄入量。结果结合文献,估算了四地区成年男子摄入原生放射性核素所致内照射剂量。结论四地区成年男子摄入原生放射性核素所致内照射剂量与以前估算值相近。
Objective To estimate the internal dose of radiation caused by primary radionuclides in adult men in four urban areas of China by indirect method. Methods The meal samples of adult men in four cities of Tianjin, Chengdu, Zhenjiang and Taiyuan were collected by double meal method, and the atmospheric samples of the city were collected at the same time. Inductively coupled plasma mass spectrometry (ICP-MS) determination and calculation of Rb, U, Th and other elements intake. Results Based on the literature, the internal dose of primary radionuclide in adult men from four regions was estimated. Conclusion Intrinsic doses of radionuclides from adult men in all four regions are similar to the previous estimates.