沙特阿拉伯海产品中γ发射天然放射性核素活度的评估及不同年龄组年有效剂量的估算。

Evaluation of the Activity of Gamma-Emitting Natural Radionuclides in Seafood and Estimation of the Annual Effective Dose for Different Age Groups in KSA.

作者信息

Aloraini Dalal A, Alharshan Gharam A, Almuqrin Aljawharah H, Al-Ghamdi Hanan, El-Azony Khaled M

机构信息

Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, KSA.

Department of Radioactive Isotopes and Generators, Hot Laboratory Center, Atomic Energy Authority, PO Box 13759, Egypt.

出版信息

Radiat Prot Dosimetry. 2018 Jan 1;178(2):193-200. doi: 10.1093/rpd/ncx087.

DOI:10.1093/rpd/ncx087

PMID:28985372

Abstract

Twenty-six brands of canned tuna and sardines imported from several countries in Southeast Asia to consume in the KSA. All samples were prepared and analyzed by using a High Pure Germanium Detector of 40% efficiency. Natural radionuclides 40K, 238U (226Ra) and 232Th(228Ra) series were observed with a varying range in all analyzed samples. The values found to be 192.3 ± 14.6, 1.5 ± 0.8 and 1.0 ± 0.6 Bq kg-1 for canned tuna and 219.8 ± 15.8, 0.37 ± 0.3 and 1.2 ± 0.3 Bq kg-1 for canned sardines, respectively. Cesium-137 was not detected at any sample. The comparison between the average activity concentrations of 40K, 238U(226Ra) and 232Th(228Ra) in both canned tuna and sardines was performed and discussed. The dose assessment due to consume/ingestion of seafood was calculated and observed that the calculated committed effective dose is within the global internal dose (290 μSv/y).

摘要

从东南亚几个国家进口到沙特阿拉伯供食用的26个品牌的罐装金枪鱼和沙丁鱼。所有样品均使用效率为40%的高纯锗探测器进行制备和分析。在所有分析样品中均观察到天然放射性核素40K、238U（226Ra）和232Th（228Ra）系列，其含量范围各不相同。罐装金枪鱼中40K、238U（226Ra）和232Th（228Ra）的值分别为192.3±14.6、1.5±0.8和1.0±0.6 Bq kg-1，罐装沙丁鱼中分别为219.8±15.8、0.37±0.3和1.2±0.3 Bq kg-1。所有样品均未检测到铯-137。对罐装金枪鱼和沙丁鱼中40K、238U（226Ra）和232Th（228Ra）的平均活度浓度进行了比较和讨论。计算了因食用海鲜而摄入的剂量，并观察到计算出的待积有效剂量在全球内照射剂量（290μSv/y）范围内。