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Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Radiat+Res 2015 ; 56 (1): 22-9 Nephropedia Template TP
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Assessment of radionuclides in the soil of residential areas of the Chittagong metropolitan city, Bangladesh and evaluation of associated radiological risk #MMPMID25237039
Rashed-Nizam QM; Rahman MM; Kamal M; Chowdhury MI
J Radiat Res 2015[Jan]; 56 (1): 22-9 PMID25237039show ga
Soil samples from the three residential hubs of Chittagong city, Bangladesh were analyzed using gamma spectrometry to estimate radiation hazard due to natural radioactive sources and anthropogenic nuclide 137Cs. The activity concentration of 226Ra was found to be in the range 11?25 Bq.kg?1, 232Th in the range 38?59 Bq.kg?1 and 40K in the range 246?414 Bq.kg?1. These results were used to calculate the radiological hazard parameters including Excess of Lifetime Cancer Risk (ELCR). The estimated outdoor gamma exposure rates were 40.6?63.8 nGy.h?1. The radiation hazard index (radium equivalent activity) ranged from 90?140 Bq.kg?1. The average value of the ELCR was found to be 0.21 × 10?3, which is lower than the world average. Sporadic fallout of 137Cs was observed with an average value of 2.0 Bq.kg?1.