Volume No. 7 Issue No.: 2 Page No.: 700-704 Oct. - Dec. 2012

 

ELEVATED NATURAL RADIOACTIVITY IN SOIL SAMPLES OF COASTAL KERALA, INDIA

 

D’ Cunha Primal and Narayana Y.*

Department of Studies in Physics, Mangalore University, Mangalagangotri (INDIA)

 

Received on : July 15, 2012

 

ABSTRACT

 

A systematic investigation on the radiation level and distribution of natural radionuclide’s in the soils was carried out along coastal Kerala, India. A detailed external background gamma radiation level was carried out using a sensitive plastic scintillometer. The soil samples were collected following the standard procedure and analyzed for the concentration of natural radionuclides. Exceptionally high levels of gamma dose rates in air were observed in some sampling locations. The gamma spectrometry measurements indicate that the activity concentrations of 226Ra and 232Th in surface soil was found to be greater than the world average values reported by the United Nations Scientific Committee on the Effects of Atomic Radiation. A good correlation was observed between the activity concentrations of 226Ra and 232Th with organic matter content in soil. The results of these investigations are presented and discussed in this paper.

 

Keywords : Environmental radioactivity, Soil, Gamma spectrometry, Thorium, Atomic Radiation

 

 

BACK