Natural radioactivity levels in the soils and human risk assessment in Tiruchirappalli district (Tamil Nadu, India)

The activity concentrations of 226 Ra, 232 Th and 40 K in 91 soil samples collected from proposed housing sites in Tiruchirappalli district were measured using gamma ray spectrometer, 222 Rn activity using SSNTD technique and ambient absorbed gamma dose employing hand held scintillometer. The mean a...

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Published inJournal of radioanalytical and nuclear chemistry Vol. 307; no. 2; pp. 1265 - 1277
Main Authors Sankaran Pillai, G., Shahul Hameed, P., Mazhar Nazeeb Khan, S. M.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.02.2016
Springer
Subjects
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Radiation, Background
Risk assessment
Soils
Uranium
India
ISW, India, Tamil Nadu
Tiruchirappalli
Radioactivity in soil
Dose rate
Primordials
Gamma ray spectrometry
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Summary:The activity concentrations of 226 Ra, 232 Th and 40 K in 91 soil samples collected from proposed housing sites in Tiruchirappalli district were measured using gamma ray spectrometer, 222 Rn activity using SSNTD technique and ambient absorbed gamma dose employing hand held scintillometer. The mean activity concentrations of 226 Ra, 232 Th and 40 K were found to be 6.5, 61.7 and 379.8 Bq kg −1 , respectively. The mean ambient gamma dose rate was 66.7 nGy h −1 and the mean radon activity 210.8 Bq m −3 . The study identified two stations in which Ra eq levels exceeded the permissible limit (370 Bq kg −1 ).
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-015-4367-z