Determination of 137Cs activity in soil from Qatar using high-resolution gamma-ray spectrometry

Huda Al-Sulaiti, Tabassum Nasir, K. S. Al Mugren, N. Alkhomashi, N. Al-Dahan, M. Al-Dosari, D. A. Bradley, S. Bukhari, M. Matthews, P. H. Regan, T. Santawamaitre, D. Malain, A. Habib, Hanan Al-Dosari, Ibrahim Al Sadig, Eman Daar

Research output: Contribution to journalArticle

Abstract

With interest in establishing baseline concentrations of 137Cs in soil from the Qatarian peninsula, we focus on determination of the activity concentrations in 129 soil samples collected across the State of Qatar prior to the 2011 Fukushima Dai-ichi nuclear power plant accident. As such, the data provides the basis of a reference map for the detection of releases of this fission product. The activity concentrations were measured via high-resolution gamma-ray spectrometry using a hyper-pure germanium detector enclosed in a copper-lined passive lead shield that was situated in a low-background environment. The activity concentrations ranged from 0.21 to 15.41 Bq/kg, with a median value of 1 Bq/kg, the greatest activity concentration being observed in a sample obtained from northern Qatar. Although it cannot be confirmed, it is expected that this contamination is mainly due to releases from the Chernobyl accident of 26 April 1986, there being a lack of data from Qatar before the accident. The values are typically within but are sometimes lower than the range indicated by data from other countries in the region. The lower values than those of others is suggested to be due to variation in soil characteristics as well as metrological factors at the time of deposition.

Original languageEnglish
Pages (from-to)222-235
Number of pages14
JournalRadiation Physics and Chemistry
Volume127
DOIs
Publication statusPublished - 1 Oct 2016

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Keywords

  • Cs
  • Activity concentration
  • Artificial radionuclide
  • Gamma spectrometry
  • HPGe detector

ASJC Scopus subject areas

  • Radiation

Cite this

Al-Sulaiti, H., Nasir, T., Al Mugren, K. S., Alkhomashi, N., Al-Dahan, N., Al-Dosari, M., Bradley, D. A., Bukhari, S., Matthews, M., Regan, P. H., Santawamaitre, T., Malain, D., Habib, A., Al-Dosari, H., Al Sadig, I., & Daar, E. (2016). Determination of 137Cs activity in soil from Qatar using high-resolution gamma-ray spectrometry. Radiation Physics and Chemistry, 127, 222-235. https://doi.org/10.1016/j.radphyschem.2016.07.003