NATURAL RADIOACTIVITY LEVEL AND ELEMENTAL COMPOSITION OF SOIL SAMPLES FROM A HIGH BACKGROUND RADIATION AREA ON EASTERN COAST OF INDIA (ODISHA)

Radiat Prot Dosimetry. 2016 Oct;171(2):172-178. doi: 10.1093/rpd/ncw052. Epub 2016 Mar 29.

Abstract

A comprehensive study was carried out to determine the radioactivity concentration of soil samples from different sites of a high background radiation area in the eastern coast of India, Odisha state. The dose rate measured in situ varied from 0.25 to 1.2 µSv h-1 The gamma spectrometry measurements indicated Th series elements as the main contributors to the enhanced level of radiation and allowed the authors to find the mean level of the activity concentration (±SD) for 226Ra, 228Th and 40K as 130±97, 1110±890 and 360±140 Bq kg-1, respectively. Human exposure from radionuclides occurring outdoor was estimated based on the effective dose rate, which ranged from 0.14±0.02 to 2.15±0.26 mSv and was higher than the UNSCEAR annual worldwide average value 0.07 mSv. Additionally, X-ray fluorescence analysis provided information about the content of major elements in samples and indicated the significant amount of Ti (7.4±4.9 %) in soils.

MeSH terms

  • Background Radiation
  • Environmental Exposure
  • Gamma Rays
  • Geography
  • Humans
  • India
  • Models, Statistical
  • Potassium / analysis*
  • Potassium Radioisotopes / analysis
  • Radiation Dosage
  • Radiation Monitoring / methods
  • Radioactivity
  • Radioisotopes / analysis
  • Radium / analysis*
  • Soil Pollutants, Radioactive / analysis*
  • Spectrometry, Gamma / methods
  • Thorium / analysis*
  • X-Rays

Substances

  • Potassium Radioisotopes
  • Radioisotopes
  • Soil Pollutants, Radioactive
  • Thorium
  • Potassium
  • Radium