Dhanya BalakrishnanUmadevi A.GJose P AbrahamP. J. JoJoM. HarikumarSujata Radhakrishnan Department of Physics, Cochin College, Kochi, 682002, Kerala, IndiaDepartment of Chemistry, NSS College, Ottapalam, Palakkad, 679103, Kerala, IndiaCentre for Advanced Research in Physical Sciences, Department of Physics, Fatima Mata National College, Kollam, 691001, Kerala, IndiaEnvironmental Assessment Division, Bhabha Atomic Research Centre, Health Physics Unit, IREL, Udyogmandal, Kerala, India dhanyabnair08@gmail.comumadeviag11@gmail.comjojo@fatimacollege.netmhari07@rediffmail.com International Journal of Fundamental Physical Sciences (IJFPS) 5 2 38-42 June, 2015 2231-8186 https://doi.org/10.14331/ijfps.2015.330084 The present study measured the concentration of primordial radionuclides in soil samples from Eloor Island, Kerala, using a NaI(Tl) gamma spectrometer. The exposure rate varied from 63 to 374 nGy/h. Activity concentrations ranged from 44.8–792.8 Bq/kg for 232Th, 8–445.5 Bq/kg for 238U, and 129–1160.5 Bq/kg for 40K. Radiation hazard parameters, including Raeq, Hex, Hin, and annual effective dose, were calculated. While some locations exceeded international safety limits, the overall impact from NORM industries was not significant. The findings contribute important baseline data for future radioactivity assessments in the region. Natural radioactivity, Gamma spectrometer, Eloor Island, Radiation exposure https://creativecommons.org/licenses/by/4.0/