【摘 要】
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In the present study,the concentrations of 226Ra,232Th and 40K are measured in building material and soil samples collected from different locations of Una,Himachal Pradesh,India.The collected soil sa
【机 构】
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Department of Physics,Dr. B.R.Ambedkar National Institute of Technology,Jalandhar,India
论文部分内容阅读
In the present study,the concentrations of 226Ra,232Th and 40K are measured in building material and soil samples collected from different locations of Una,Himachal Pradesh,India.The collected soil samples and building materials are analysed using NaI(T1) gamma ray spectrometry.The activity concentrations of the naturally occurring radionuclides 226Ra,232Th and 40K in the soil samples varies from 36.4 Bqkg-1 t0 51.9 Bqkg-1,9.3 Bqkg-1 to 26.1 Bqkg-1 and 1361.0 Bqkg-1 t0 1732.4 Bqkg-1,respectively but in building material it varies from 27.8 Bqkg-1 to 236.0 Bqkg.1,1.2 Bqkg-1 to 146.1 Bqkg-1 and 1059.6 Bqkg-1 to 1582.9 Bqkg-1,respectively.The radium equivalent activity,absorbed dose rate,annual effective dose and hazard index are also calculated for the assessment of radiological risk.The concentration of radionuclides depends upon the rock formation and chemical properties within the earth.The average radium equivalent activity from the soil samples and building material is 177.6 Bqkg-1 and 201.1 Bqkg-1.The concentration of 226Ra,232Th and 40K in the collected samples are higher than the world average concentrations 35 Bqkg-1,30Bqkg-1and 400 Bqkg-1,respectively.This study is important to generate a baseline data of radiation exposure in the area.
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