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研究了丰度为19.8%的浓缩铀(UO_2F_2)经大白鼠静脉注入后其肝、肾、骨的辐射剂量贡献。结果表明浓缩铀在大鼠体内5和100d 内累积剂量增值最大;接受辐射剂量最大的是肾脏,分别为111.9mGy 和28.4mGy,其次是骨骼,分别为2.3mGy 和17.3mGy,而肝脏分别为14mGy和3.4mGy。以积分100d 而言,贡献能量最多的核素是~(234)U(占总量的95.0%,而~(235)U 和~(238)U 分别占2.6%和2.0%)。α辐射占总吸收能量的99.7%。
The contribution of uranium, bone and bone dose to uranium enriched uranium (19.8%) by intravenous injection in rats was studied. The results showed that the cumulative dose of enriched uranium increased most significantly within 5 and 100 days in rats. The most irradiated dose was uranium at 111.9 mGy and 28.4 mGy respectively, followed by bones at 2.3 mGy and 17.3 mGy, respectively, while the liver was 14 mGy And 3.4mGy. For the 100th percentile, the most energetic contributing nuclei were ~ 234 U (95.0% of the total, while ~ 235 U and ~ 238 U were 2.6% and 2.0%, respectively). Alpha radiation accounts for 99.7% of the total absorbed energy.