Natural radionuclides content in
granite from eight functional quarries in Osun State, Southwestern Nigeria was assessed. Eighty
granite samples comprise？¾？inches.？½？inch and stone-dust
were collected from Wolid, Slava, Ayofe, Espro, Ife/Modakeke, Krystal Vountein,
Clario and Omidiran quarries in the State. Measurement was done using a high
purity germanium (HPGe) detector. The statistical analysis was carried out
using Statistical Package for Social Sciences (SPSS) software to determine if
granite size has an impact on the activity concentrations. The results revealed
that the mean activity concentrations of 238U (12.64 ± 1.89 Bq·kg -1) and 232Th (16.93 ± 2.46 Bq·kg -1) were highest in？¾？inch granite
and lowest in stone-dust (5.01 ± 0.77 and 8.97 ± 1.37 Bq·kg -1respectively), whereas 40K is highest in the ¾？inches (266.19 ± 35.53
Bq·kg -1) and lowest in？½？inches
(151.85 ± 25.09 Bq·kg -1) granite. Espro has the highest (23.75 ± 3.74
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