An evaluation of the natural radioactivity in Andaman beach sand samples of Thailand after the 2004 tsunami

D. Malain, P. H. Regan, D. A. Bradley, M. Matthews, Huda Al-Sulaiti, T. Santawamaitre

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Following the 2004 'Boxing day' tsunami, a determination has been made of the activity concentrations of 226Ra, 232Th and 40K in beach sand samples which have been collected from various locations along the Andaman coast of the Thai peninsula. Use has been made of a HPGe detector-based, low-background gamma-ray counting system. The natural radioactivity levels of 226Ra, 232Th and 40K measured from these samples was found to lie in the range 1.6-52.5, 0.3-73.9and 2.8-1111.9Bq/kg respectively for the west coast and 3.5-83.1, 4.5-42.0, and 9.6-1376Bq/kg respectively for the east coast. The radioactivity concentrations of 226Ra, 232Th and 40K along the Andaman coast are comparable to that of the east coast, which was not exposed to the tsunami. The corresponding annual effective dose varies from 1.6-105.9μSv/y with a mean value of 59.1±0.3μSv/y, significantly lower than the worldwide average as reported by United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) (2000).

Original languageEnglish
Pages (from-to)1467-1474
Number of pages8
JournalApplied Radiation and Isotopes
Volume70
Issue number8
DOIs
Publication statusPublished - Aug 2012
Externally publishedYes

Fingerprint

Thailand
beaches
radioactivity
coasts
sands
evaluation
United Nations
peninsulas
counting
gamma rays
dosage
detectors
radiation

Keywords

  • Gamma-ray intensities
  • Gamma-ray spectroscopy
  • Hyper-pure germanium detector
  • Naturally occurring radioactive materials
  • Secular equilibrium

ASJC Scopus subject areas

  • Radiation

Cite this

An evaluation of the natural radioactivity in Andaman beach sand samples of Thailand after the 2004 tsunami. / Malain, D.; Regan, P. H.; Bradley, D. A.; Matthews, M.; Al-Sulaiti, Huda; Santawamaitre, T.

In: Applied Radiation and Isotopes, Vol. 70, No. 8, 08.2012, p. 1467-1474.

Research output: Contribution to journalArticle

Malain, D. ; Regan, P. H. ; Bradley, D. A. ; Matthews, M. ; Al-Sulaiti, Huda ; Santawamaitre, T. / An evaluation of the natural radioactivity in Andaman beach sand samples of Thailand after the 2004 tsunami. In: Applied Radiation and Isotopes. 2012 ; Vol. 70, No. 8. pp. 1467-1474.
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