Paredes C H, Kessler W V, Landolt R R, Ziemer P L, Paustenbach D J
Health Phys. 1987 Jul;53(1):23-9. doi: 10.1097/00004032-198707000-00002.
The radionuclide content and 222Rn emanation coefficients of selected construction materials were determined. The materials were analyzed for 226Ra, 228Ra and 40K by gamma-ray spectrometry. Mineral wool insulation, which is made from Tennessee phosphate slag, and commonly used insulation, which is made from blast furnace slag, had similar concentrations of these radionuclides. Concrete blocks made with phosphate slag had enhanced 226Ra and 228Ra contents when compared to ordinary concrete block. The mineral wool insulation materials which were examined had emanation coefficients that were a few (2-6) times 10(-3). All other materials had emanation coefficients that ranged from 6 X 10(-4) to 4 X 10(-2).
测定了所选建筑材料的放射性核素含量和222Rn析出系数。通过γ射线能谱法分析了这些材料中的226Ra、228Ra和40K。由田纳西磷渣制成的矿棉绝缘材料和由高炉矿渣制成的常用绝缘材料，这些放射性核素的浓度相似。与普通混凝土砌块相比，用磷渣制成的混凝土砌块中226Ra和228Ra含量有所增加。所检测的矿棉绝缘材料的析出系数为几（2 - 6）乘以10（-3）。所有其他材料的析出系数范围为6×10（-4）至4×10（-2）。
