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Destructive and non-destructive measurements of NORM in monazite-rich sands of Brazil

Regan, Patrick, Larijani, Cyrus Kouroush, Schwendner, P, Cockell, C, Ivanov, P, Russell, B and Aitken-Smith, P (2017) Destructive and non-destructive measurements of NORM in monazite-rich sands of Brazil Radiation Physics and Chemistry.

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Abstract

The specific activity concentration of eight sand samples from three locations in the State of Espirito Santo, South Eastern Brazil have been determined for members of the 238U and 232Th decay series, as well as the primordial radionuclide 40K. The calculated activity concentration values and associated radiation hazard indices were evaluated. The thorium decay chain activities are significantly higher than that of comparable studies from other areas of the world, leading to calculated absorbed dose rate in air and radium equivalent activities which are higher than world averages. This is attributed to the geology of the monazite material which is ubiquitous in this region of Brazil. Trace elemental analysis was also carried out on these samples using Inductively Coupled Plasma Mass Spectrometry (ICP-MS).

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Regan, PatrickP.Regan@surrey.ac.ukUNSPECIFIED
Larijani, Cyrus Kouroushc.larijani@surrey.ac.ukUNSPECIFIED
Schwendner, PUNSPECIFIEDUNSPECIFIED
Cockell, CUNSPECIFIEDUNSPECIFIED
Ivanov, PUNSPECIFIEDUNSPECIFIED
Russell, BUNSPECIFIEDUNSPECIFIED
Aitken-Smith, PUNSPECIFIEDUNSPECIFIED
Date : 17 January 2017
Identification Number : 10.1016/j.radphyschem.2017.01.010
Copyright Disclaimer : © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : NORM Monazite sands Environmental radioactivity Gamma emitting radionuclides
Depositing User : Symplectic Elements
Date Deposited : 08 Mar 2017 18:42
Last Modified : 19 Jul 2017 11:37
URI: http://epubs.surrey.ac.uk/id/eprint/813724

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