Studies on distribution of radionuclides and behavior of clay minerals in the soils of river environs

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Abstract

In the present investigation, the activity concentrations of radionuclides in the soils of Cauvery river environs were measured using HPGe gamma ray spectrometer. FTIR spectroscopy was used to find minerals present in soil samples. The mean values of 40K, 226Ra and 232Th in the soil samples was found to be 132.9, 22.95 and 26.88 Bq kg−1 respectively. The estimated absorbed dose rate and hazard indices were found to be within the safety limits. The extinction coefficients for quartz, sepiolite and kaolinite in soil varied from 0.64 to 37.24, 0.39 to 34.47 and 9.66 to 35.81 respectively. The correlation matrix showed that the clay mineral like kaolinite influences the increase in activity concentration of radionuclides.

Keywords

Cauvery river Radionuclides Clay minerals Dose rate Radium Gamma ray spectrometer 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  1. 1.Department of PhysicsMangalore UniversityMangaloreIndia
  2. 2.Beary’s Institute of TechnologyMangaloreIndia

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