Assessment of natural radioactivity in the soils of Rossing Uranium Mine and its satellite town in western Namibia, southern Africa

被引：17
|
作者：
Oyedele, J. A. [1 ]
Shimboyo, S. [1 ]
Sitoka, S. [1 ]
Gaoseb, F. [2 ]
机构：
[1] Univ Namibia, Dept Phys, Windhoek, Namibia
[2] Rossing Uranium Ltd, Swakopmund, Namibia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2010年 / 619卷 / 1-3期
关键词：
Radioactivity; Soil; Uranium; Mine; Namibia; HPGe; BACKGROUND-RADIATION; GAMMA; SAMPLES; RADIONUCLIDES; SEDIMENTS; NIGERIA; TH-232; IBADAN; EGYPT; AREAS;
D O I：
10.1016/j.nima.2010.01.068
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The concentrations of the radionuclides (238)U, (232)Th and (40)K in soil samples taken from the Rossing Uranium Mine and the neighbouring town of Arandis in western Namibia have been determined by means of an HPGe detector with the aim of providing a baseline data on radiation level in the area. In the samples, the concentrations vary from 45.9 +/- 3.0 to 1752.1 +/- 17.5 Bq kg(-1) for (238)U, 70.4 +/- 4.8 to 1865.5 +/- 56.0 Bq kg(-1) for (232)Th and 376.5 +/- 18.1 to 1300.7 +/- 50.7 Bq kg(-1) for (40)K. These concentrations were used to calculate the absorbed dose rates and the annual effective dose rates in the mine and town. The annual effective dose rates vary from 0.12 +/- 0.01 to 1.60 +/- 0.04 mSy y(-1) with a mean of 0.30 +/- 0.21 mSv y(-1) which indicates that the area has a normal background radiation. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：467 / 469
页数：3
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