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

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Original languageEnglish
Pages (from-to)180-185
Number of pages6
JournalRadiation physics and chemistry
Publication statusPublished - 17 Jan 2017
Event2nd International Conference on Dosimetry and its Applications (ICDA) - Guildford
Duration: 3 Jul 20168 Jul 2016


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).

    Research areas

  • NORM, Monazite sands, Environmental radioactivity, Gamma emitting radionuclides, NATURAL RADIOACTIVITY, RED-SEA, COAST, RADIONUCLIDES, SOFTWARE, EXPOSURE, SOIL


ID: 57625386