约旦常用花岗岩和大理石的放射性测量与放射危害评估

RADIOACTIVITY MEASUREMENT AND RADIOLOGICAL HAZARD ASSESSMENT OF THE COMMONLY USED GRANITE AND MARBLE IN JORDAN.

作者信息

Alali Abdullah E, Al-Shboul Khaled F, Albdour Samah A

机构信息

Nuclear Engineering Department, Jordan University of Science & Technology, Irbid, Jordan.

出版信息

Radiat Prot Dosimetry. 2018 Dec 1;182(3):386-393. doi: 10.1093/rpd/ncy077.

DOI:10.1093/rpd/ncy077

PMID:29741709

Abstract

Natural radioactivity of common commercial marble and granite types used in Jordanian dwellings are measured using high-resolution gamma spectrometry. The activity concentrations of 226Ra, 232Th and 40K ranged from 8.57 ± 1.55 to 152.07 ± 3.26 Bq kg-1, 6.83 ± 1.25 to 365.43 ± 4.84 Bq kg-1 and 121.25 ± 9.10 to 1604.90 ± 31.28 Bq kg-1 in granite and from 0.53 ± 0.12 to 18.61 ± 1.60 Bq kg-1, 0.51 ± 0.19 to 4.87 ± 2.13 Bq kg-1 and 3.21 ± 0.96 to 58.09 ± 6.40 Bq kg-1 in marble, respectively. Various radiological hazard indices like gamma index, internal and external hazard indices and annual effective dose equivalent were calculated and compared with the international limits. Our results show that some granite types may pose a radiation hazard.

摘要

采用高分辨率伽马能谱法测量了约旦住宅中使用的常见商用大理石和花岗岩类型的天然放射性。花岗岩中226镭、232钍和40钾的活度浓度范围分别为8.57±1.55至152.07±3.26贝克勒尔每千克、6.83±1.25至365.43±4.84贝克勒尔每千克以及121.25±9.10至1604.90±31.28贝克勒尔每千克，大理石中则分别为0.53±0.12至18.61±1.60贝克勒尔每千克、0.51±0.19至4.87±2.13贝克勒尔每千克以及3.21±0.96至58.09±6.40贝克勒尔每千克。计算了各种放射性危害指数，如伽马指数、内照射和外照射危害指数以及年有效剂量当量，并与国际限值进行了比较。我们的结果表明，某些花岗岩类型可能会造成辐射危害。