Study of natural radioactivity in riverbank soils along the Chao Phraya river basin in Thailand

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

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Levels of naturally occurring radioactivity in surface soils along the Chao Phraya river have been investigated. The activity concentrations of radionuclides in the 238U and 232Th decay chains and from 40K were determined through gamma-ray spectrometry measurements made using a hyperpure germanium detector in a low background configuration. Activity concentrations of 238U, 232Th and 40K were found to be 55.3±1.2↔65.2±1.4, 60.7±1.2↔69. 1±1.3 and 393±13↔478±16 Bq/kg, respectively. Concerning radiological risk, the absorbed gamma dose rate in air from those soils was estimated to lie in the range 81.6±1.9↔90.4±2.1 nGy/h; the outdoor annual effective dose equivalent was calculated to be 100.1±2.3↔110.8±2.5 μSv/yr. These results are compared with radioactivity measurements with world mean values.

Original languageEnglish
Pages (from-to)920-924
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume652
Issue number1
DOIs
Publication statusPublished - 1 Oct 2011
Externally publishedYes

Fingerprint

Thailand
river basins
Radioactivity
radioactivity
Catchments
soils
Radioactivity measurement
Rivers
Soils
dosage
Germanium
Radioisotopes
Gamma rays
radioactive isotopes
rivers
Spectrometry
germanium
gamma rays
Detectors
air

Keywords

  • Gamma-ray spectrometry
  • Natural radioactivity
  • Naturally occurring radioactive nuclides
  • Soil

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

Cite this

Study of natural radioactivity in riverbank soils along the Chao Phraya river basin in Thailand. / Santawamaitre, T.; Malain, D.; Al-Sulaiti, Huda; Matthews, M.; Bradley, D. A.; Regan, P. H.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 652, No. 1, 01.10.2011, p. 920-924.

Research output: Contribution to journalArticle

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