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Published on: December 25, 2021
ASSESSMENT OF RADIATION DOSE AND EXCESSIVE LIFE-TIME CANCER RISK FROM THE BUNAIR GRANITE, NORTHERN PAKISTAN
A A Qureshi1, S Manzoor1, H Younis1
1Radiation Physics Laboratory, Department of Physics, COMSATS Institute of Information Technology, Park Road, Islamabad, Pakistan.
Abstract:
Natural radioactivity was measured in Bunair Granite using high purity germanium gamma-ray spectrometer and compared to world's granites and building materials to access its suitability for the construction purpose. Average gamma-activities of 226Ra, 232Th and 40K were found to be 52.41, 58.41 and 1130.12 Bq kg-1, respectively. The Indoor and outdoor radiation indices including excessive life-time cancer risk (ELCR) were calculated. The average indoor ELCR was estimated as 3.49 × 10-3. The average outdoor ELCR was assessed as 0.46 × 10-3. As a basic building material Bunair Granite should be on low propriety. For flooring, facing the buildings and as Table tops, in kitchens and other utilities it is safe.
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