Measurements of natural radioactivity and Mössbauer Effect in some soil samples collected from the new campus of Taif University, Saudi Arabia.

dc.contributor.authorAhmed, M. A.
dc.contributor.authorSharshar, T.
dc.contributor.authorHassan, H. E.
dc.contributor.authorCosta, Geraldo Magela da
dc.contributor.authorGrave, Eddy De
dc.date.accessioned2017-05-25T12:34:15Z
dc.date.available2017-05-25T12:34:15Z
dc.date.issued2012
dc.description.abstractEleven soil samples from the new campus of Taif University and its neighboring areas, Saudi Arabia have been studied by high-resolution -ray spectroscopy, x-ray powder diffraction and Mössbauer spectroscopy to ascertain their overall characterization. The mean and range of the activity concentrations of 232Th, 234Th, 226Ra, 40K and 137Cs isotopes in the soil samples are 1.68±0.2 (8.3 - 40.2), 9.83±0.1 (5.6 - 16.5), 12.97±0.2 (7 - 19.1), 625±10 (551 - 739) and 2.79±0.1 (0.7 - 3.9) Bq.kg-1, respectively. The calculated radium equivalent of soil samples are lower than the limit set in the OECD report (370 Bq.kg−1). The major Mössbauer spectral components of soil samples are ferrous and ferric doublets. This result is consistent with X-ray powder diffraction results that show the presence of chlorite, biotite and vermiculite. Small amounts of hematite were also found in eight samples. The variation of the obtained Fe2+/Fe3+ ratio is discussed in terms of the values of the radium equivalent activities to assess, if any, possible correlation between the specific activity of samples containing different contents of naturally occurring radioactivities and their Fe2+/Fe3+ ratios.pt_BR
dc.identifier.citationAHMED, M. A. et. al. Measurements of natural radioactivity and Mössbauer Effect in some soil samples collected from the new campus of Taif University, Saudi Arabia. Journal of Physics, v. 1, p. 31-37, 2012. Disponível em: <http://researchpub.org/journal/jp/number/vol1-no2/vol1-no2-4.pdf>. Acesso em: 20 abr. 2017.pt_BR
dc.identifier.issn2165-5294
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/7805
dc.identifier.uri2http://researchpub.org/journal/jp/number/vol1-no2/vol1-no2-4.pdfpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectRadioactivitypt_BR
dc.subjectMössbauer Spectroscopypt_BR
dc.subjectRadium Equivalentpt_BR
dc.titleMeasurements of natural radioactivity and Mössbauer Effect in some soil samples collected from the new campus of Taif University, Saudi Arabia.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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