建筑材料中放射性核素含量所致放射危害的统计评估
STATISTICAL ESTIMATION OF RADIOLOGICAL HAZARDS FROM RADIONUCLIDE CONTENTS IN BUILDING MATERIALS.
作者信息
Adewoyin O O, Omeje M, Joel E S, Odetunmibi O A
机构信息
Department of Physics, College of Science and Technology, Covenant University, Ota, Ogun State 112233, Nigeria.
Department of Mathematics, College of Science and Technology, Covenant University, Ota, Ogun State 112233, Nigeria.
出版信息
Radiat Prot Dosimetry. 2019 Dec 31;185(4):519-525. doi: 10.1093/rpd/ncz047.
Thirteen (13) types of building tiles and Sharp sand commonly used for building purposes were collected for their radionuclide contents analysis using gamma ray spectrometry. The average value of the Radium equivalent activity is 208.81 Bq/kg for all samples considered was found to be lower than the recommended safe limit of 370 Bq/kg. Similarly, both external and internal hazard indices (Hex and Hin) were noted to have mean values of 0.57 and 0.73, respectively, which were lower than the recommended safe standard of 1. More so, the average absorbed gamma dose rate was observed to be 94.31 nGy/h, much higher than the recommended safe limit of 59 nGy/h.
采集了13种常用于建筑的建筑瓷砖和粗砂，利用伽马射线能谱法对其放射性核素含量进行分析。所有考虑样本的镭当量活度平均值为208.81贝克勒尔/千克，发现低于推荐的安全限值370贝克勒尔/千克。同样，外部和内部危害指数（Hex和Hin）的平均值分别为0.57和0.73，均低于推荐的安全标准1。此外，观察到平均吸收伽马剂量率为94.31纳戈瑞/小时，远高于推荐的安全限值59纳戈瑞/小时。
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