Distribution of natural radionuclides in NORM samples from North Abu Rusheid area, Egypt

被引：5

作者：

Sakr, S. ^{[1
,2
,3
]}

Inoue, K. ^{[1
]}

Mohamed, A. ^{[2
]}

Ahmed, A. A. ^{[2
]}

ElFeky, M. G. ^{[4
]}

Saleh, G. M. ^{[4
]}

Kamar, M. S. ^{[4
]}

Arae, H. ^{[3
]}

Aono, T. ^{[3
]}

Sahoo, S. K. ^{[3
]}

机构：

[1] Tokyo Metropolitan Univ, 7-2-10 Higashiogu,Arakawa Ku, Tokyo 1168551, Japan

[2] Minia Univ, Dept Phys, Al Minya, Egypt

[3] Natl Inst Quantum Sci & Technol QST, 4-9-1 Anagawa,Inage Ku, Chiba 2638555, Japan

[4] Nucl Mat Author, POB 530, Cairo, Egypt

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2023年 / 266卷

关键词：

Uranium; Thorium; Potassium; Mylonitic rocks; Radiological hazard parameters; EASTERN DESERT; RADIOACTIVITY LEVELS; BUILDING-MATERIALS; GRANITE SAMPLES; SOIL SAMPLES; SOUTH SINAI; RADIATION; HAZARDS; INDIA; TAMILNADU;

D O I：

10.1016/j.jenvrad.2023.107240

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The North Abu Rusheid area in Egypt is a well-known high background natural radiation area (HBNRA) due to the existence of naturally occurring radioactive materials (NORMs) in mylonitic rocks. In this study, 27 rock samples were selected for dose estimation studies. 238U and 232Th were measured using inductively coupled plasma mass spectrometry (ICP-MS) and 40K was measured using sodium iodide (thallium) gamma-ray spectroscopy. The ranges of activity concentrations (Bq/kg) of 238U, 232Th and 40K in the samples varied from 270 & PLUSMN; 2 to 2120 & PLUSMN; 29, 350 & PLUSMN; 2 to 1840 & PLUSMN; 27 and 20 & PLUSMN; 2 to 1390 & PLUSMN; 35 with mean values of 980 & PLUSMN; 349, 770 & PLUSMN; 351, and 640 & PLUSMN; 402 Bq/kg, respectively. The radiological hazard parameters were estimated from activity concentrations of 238U, 232Th and 40K and compared to United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) values. The present study revealed that the hazard parameters were several times higher than the worldwide averages. The U/Th concentration ratio ranged from 0.7 to 3 and could be attributed to the presence of kasolite, uranothorite, zircon, and columbite in mylonitic rocks. From the radiological protection viewpoint, it is necessary to monitor natural radionuclides in these rocks prior to their use in residential and commercial construction materials.

引用

页数：9

共 38 条

[1] Determination of indoor doses and excess lifetime cancer risks caused by building materials containing natural radionuclides in Malaysia [J].