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Levy, Denise; Sordi, G.M.A.A.

doi:10.15392/bjrs.v3i1a

Cited by 1 publication

(3 citation statements)

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“…The system is coupled with the Genie 2000 software and the UniSpec integrated multichannel analyzer, calibrated with a standard source 60 Co. The Gamma-radiation system is shown in Figure 1 [10]. For natural radiation studies using high energy gamma-rays, this detection system is very efficient, low cost and allows easy maintenance and operation.…”

Section: Methodsmentioning

confidence: 99%

“…It is very important to study radionuclide distribution in soils and sediments to understand the radiological implications in relation to the exposure of the human body to ionizing radiation and the knowledge of which components are found in one specific geographic region [8,10,13]. Natural background radiation studies are needed to establish reference levels, especially in areas where the risk of radioactive exposure may be higher.…”

Section: Natural Radionuclidesmentioning

confidence: 99%

“…The sand samples were magnetically separated and each magnetic fraction was analyzed. In order to determine the mineral species responsible for the high activity found in one specific site, the sand samples were analyzed with a scanning electron microscope, using Energy-Dispersive X-Ray Spectroscopy (EDS) microanalysis [10,13,17].…”

Section: Natural Radionuclidesmentioning

confidence: 99%

See 2 more Smart Citations

Radiochemical Separation and Measurement by Mass Spectrometry with Magnetic Sector with Inductively Coupled Plasma source (ICP-SFMS) of Plutonium Isotopes in Soil Samples

Cortés

Hernández‐Mendoza

Carrillo

et al. 2016

JNP

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Human beings are constantly exposed to several types of natural radiation. This paper aims to study the total external dose from northwestern Brazilian beach sands. The samples were collected at Prainha in Itacaré, Bahia, and Praia de AreiaPreta in Guarapari, Espírito Santo. Gamma spectrometry is a very useful technique to estimate the effective dose due to naturally occurring radionuclides, such as 40 K and daughters of 238 U and 232 Th. In order to confirm the high activity present in these two regions, the effective dose due to each natural radionuclide was determined. Moreover, the Energy-Dispersive X-Ray Spectroscopy (EDS) microanalysis was used to characterize the soil composition and the minerals responsible for the high activity. In addition, the sand samples were separated in to magnetic and non-magnetic fractions in order to identify the contribution from each portion of the activity. Finally, the radionuclides and their dispersion in those places are consistent with previous studies, indicating effective doses above the world average that is between 0.3 mSv/year and 1.0 mSv/year.

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Section: Methodsmentioning

confidence: 99%

Section: Natural Radionuclidesmentioning

confidence: 99%