Kawamura H, Yamamoto M, Igarashi Y, Shiraishi K, Ueno K
Division of Radioecology, National Institute of Radiological Sciences, Ibaraki, Japan.
Health Phys. 1991 Nov;61(5):615-22. doi: 10.1097/00004032-199111000-00004.
Radium-226 concentrations of bone from the fetus and stillborn and from subjects aged 0 to 87 y, especially those older than 15 y, were determined by alpha spectrometry after an ion exchange separation. The median and mean 226Ra concentrations in bone of the adults, 20 to 69 y, were 0.35 and 0.42 Bq (kg bone ash)-1, respectively, and those for ages 15 to 87 y were 0.35 and 0.41 Bq (kg bone ash)-1, respectively. For fetal bones, mean content was 0.29 Bq (kg bone ash)-1. Annual dose equivalents in cells near bone surfaces and active red bone marrow, received from alpha radiation emitted from 226Ra and its decay products in mineral bone, were estimated using the ICRP dosimetric model for bone and assuming masses of source and target tissues for a Japanese Reference Man.
通过离子交换分离后采用α能谱法测定了胎儿、死产儿以及0至87岁人群（尤其是15岁以上人群）骨骼中的镭-226浓度。20至69岁成年人骨骼中镭-226浓度的中位数和平均值分别为0.35和0.42贝可勒尔每千克骨灰，15至87岁人群的相应数值分别为0.35和0.41贝可勒尔每千克骨灰。胎儿骨骼的平均含量为0.29贝可勒尔每千克骨灰。利用国际辐射防护委员会（ICRP）的骨骼剂量学模型，并假定日本参考人的源组织和靶组织质量，估算了矿化骨骼中镭-226及其衰变产物发射的α辐射在骨表面附近细胞和活跃红骨髓中产生的年剂量当量。
