TY - JOUR
T1 - Natural radioactivity study in soil samples of South Konkan, Maharashtra, India
AU - Dhawal, S. J.
AU - Phadatare, M. R.
AU - Thorat, N. D.
AU - Kulkarni, G. S.
AU - Pawar, S. H.
PY - 2013/12
Y1 - 2013/12
N2 - This study assesses the level of natural radioactivity due to radionuclides, 238U, 232Th and 40K, in 50 soil samples collected from South Konkan, Maharashtra, India. The mean activity concentrations of 238U, 232Th and 40K are 44.97±1.22 Bq kg-1, 59.70±2.17 Bq kg-1 and 217.51±8.75 Bq kg-1, respectively, measured from all the soil samples studied. The good correlation between activity concentration of U-238 and Th-232; U-238 and K-40 as well as between activity concentration of Th-232 and K-40 was observed. The average calculated absorbed dose rate in air (68.08 nGy h-1) was found to be higher than the world average of 57 nGy h-1(UNSCEAR 2000). Radium equivalent activity for all the villages was found to be lower than the worldwide value. The values of external hazard index and internal hazard index determined from all the soil samples were found to be within recommended limit. The calculated average annual effective dose was found to be 0.42 mSv y-1, and it is lower than the worldwide value of 0.46 mSv y-1.The annual effective dose values calculated from present study were comparable with previous studies carried out in other countries and in India. The data established from the study can be useful as baseline information on natural radioactivity in South Konkan, Maharashtra, India.
AB - This study assesses the level of natural radioactivity due to radionuclides, 238U, 232Th and 40K, in 50 soil samples collected from South Konkan, Maharashtra, India. The mean activity concentrations of 238U, 232Th and 40K are 44.97±1.22 Bq kg-1, 59.70±2.17 Bq kg-1 and 217.51±8.75 Bq kg-1, respectively, measured from all the soil samples studied. The good correlation between activity concentration of U-238 and Th-232; U-238 and K-40 as well as between activity concentration of Th-232 and K-40 was observed. The average calculated absorbed dose rate in air (68.08 nGy h-1) was found to be higher than the world average of 57 nGy h-1(UNSCEAR 2000). Radium equivalent activity for all the villages was found to be lower than the worldwide value. The values of external hazard index and internal hazard index determined from all the soil samples were found to be within recommended limit. The calculated average annual effective dose was found to be 0.42 mSv y-1, and it is lower than the worldwide value of 0.46 mSv y-1.The annual effective dose values calculated from present study were comparable with previous studies carried out in other countries and in India. The data established from the study can be useful as baseline information on natural radioactivity in South Konkan, Maharashtra, India.
UR - http://www.scopus.com/inward/record.url?scp=84887097625&partnerID=8YFLogxK
U2 - 10.1093/rpd/nct131
DO - 10.1093/rpd/nct131
M3 - Article
C2 - 23704360
AN - SCOPUS:84887097625
SN - 0144-8420
VL - 157
SP - 225
EP - 233
JO - Radiation Protection Dosimetry
JF - Radiation Protection Dosimetry
IS - 2
M1 - nct131
ER -