Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102983
Title: The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure
Authors: Hanfi, M. Y. M.
Masoud, M. S.
Sayyed, M. I.
Khandaker, M. U.
Faruque, M. R. I.
Bradley, D. A.
Mostafa, M. Y. A.
Issue Date: 2021
Publisher: Public Library of Science
Citation: The presence of radioactive heavy minerals in prospecting trenches and concomitant occupational exposure / M. Y. M. Hanfi, M. S. Masoud, M. I. Sayyed, et al. — DOI 10.1371/journal.pone.0249329 // PLoS ONE. — 2021. — Vol. 16. — Iss. 3 March 2021. — e0249329.
Abstract: Uranium, perhaps the most strategically important component of heavy minerals, finds particular significance in the nuclear industry. In prospecting trenches, the radioactivity of 238U and 232Th provides a good signature of the presence of heavy minerals. In the work herein, the activity concentrations of several key primordial radionuclides (238U, 232Th, and 40K) were measured in prospecting trenches (each of the latter being of approximately the same geometry and physical situation). All of these are located in the Seila area of the South Eastern desert of Egypt. A recently introduced industry standard, the portable hand-held RS-230 BGO gamma-ray spectrometer (1024 channels) was employed in the study. Based on the measured data, the trenches were classified as either non-regulated (U activity less than 1000 Bq kg-1) or regulated (with 238U activity more than 1000 Bq kg-1). Several radiological hazard parameters were calculated, statistical analysis also being performed to examine correlations between the origins of the radionuclides and their influence on the calculated values. While the radioactivity and hazard parameters exceed United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) guided limits, the mean annual effective doses of 0.49 and 1.4 mSv y-1 in non-regulated and regulated trenches respectively remain well below the International Commission on Radiological Protection (ICRP) recommended 20 mSv/y maximum occupational limit. This investigation reveals that the studied area contains high uranium content, suitable for extraction of U-minerals for use in the nuclear fuel cycle. © 2021 Hanfi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Keywords: HEAVY METAL
POTASSIUM 40
RADIOACTIVE ELEMENT
RADIOISOTOPE
THORIUM 232
URANIUM
URANIUM 238
ARTICLE
CHEMICAL PARAMETERS
CONCENTRATION (PARAMETER)
CONTROLLED STUDY
CORRELATIONAL STUDY
EFFECTIVE DOSE (RADIATION)
EGYPT
GAMMA SPECTROMETRY
GEOGRAPHIC AND GEOLOGICAL PHENOMENA
GEOGRAPHIC DISTRIBUTION
HUMAN
NUCLEAR INDUSTRY
OCCUPATIONAL EXPOSURE
RADIATION DOSE
RADIATION HAZARD
RADIOACTIVITY
RADIOELEMENT CONTENT
RISK FACTOR
SAMPLING
TRENCH
URI: http://hdl.handle.net/10995/102983
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85103594283
PURE ID: 21181528
7c99fedc-15ab-48b7-aeeb-49471199911f
ISSN: 19326203
DOI: 10.1371/journal.pone.0249329
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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