Hassan Nabil M, Mansou N A, Salama S, Seoud M S
Department of Physics, Faculty of Science, Zagazig University, Zagazig, Egypt.
Radiation Protection and Civil Defense, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
Radiat Prot Dosimetry. 2019 Dec 31;185(4):494-506. doi: 10.1093/rpd/ncz043.
Activity concentrations of 238U, 232Th and 40K in raw and waste petroleum materials (Egypt and Kuwait) were measured using gamma ray spectrometer. The average values of 226Ra, 232Th and 40K were 21.1 ± 3.2, 7.6 ± 1.3 and 88.4 ± 8.2 Bq kg-1 for Egyptian samples while for Kuwaiti samples, they were 25.2 ± 3.4, 6.1 ± 2.2 and 67.8 ± 6.4 Bq kg-1, respectively. All samples had activity less than the exemption level recommended by the International Atomic Energy Agency. Moreover, radiological indices of radium equivalent, external, internal, alpha and gamma indices and radiation dose as well were calculated and their values were lower than the recommended regulatory limits. Thus, radiation exposure to petroleum materials did not present a significant radiological hazard.
使用伽马射线光谱仪测量了埃及和科威特的原油及石油废料中238U、232Th和40K的活度浓度。埃及样品中226Ra、232Th和40K的平均值分别为21.1±3.2、7.6±1.3和88.4±8.2 Bq kg-1，而科威特样品中它们的平均值分别为25.2±3.4、6.1±2.2和67.8±6.4 Bq kg-1。所有样品的活度均低于国际原子能机构建议的豁免水平。此外，还计算了镭当量、外照射、内照射、α和γ指数以及辐射剂量等放射学指标，其值均低于建议的监管限值。因此，石油材料的辐射暴露不会造成显著的放射学危害。
