Natural Environmental Radioactivity in the Soil of Terengganu State, Malaysia (original) (raw)

Abstract

The activity concentrations of naturally occurring radionuclides in environmental medium such as soil play an important role in setting national and international average doses to public for radiation protection purposes. This work measures the activity concentrations of the naturally occurring radionuclides (226 Ra, 232 Th and 40 K) in soil samples of Terengganu state, Malaysia using hyper pure germanium (HPGe) spectrometry. The mean (range) activity concentrations of 226 Ra, 232 Th, and 40K in the soil samples 79 ± 3 (20 ± 1-151 ± 5) Bq kg-1 with the mean value of Bq kg-1 for 226 Ra; 84 ± 3 (8 ± 1-182 ± 6) Bq kg-1 for 232 Th, and 545 ± 55 (47 ± 5-1056 ± 107) Bq kg-1 for 40K. Upon comparing these values with the world averages for 226 Ra, 232 Th and 40 K, which are 33, 36 and 474 Bq kg −1 , respectively. It is therefore, evidently seen that the mean activity concentrations of 226 Ra and 232 Th in the soil of Terengganu are slightly more than twice their corresponding global average...

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