Evaluation of radon induced lung cancer risk in occupants of the old and new dwellings of the Dera Ismail Khan City,Pakistan |
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Authors: | Tabassum Nasir Matiullah Muhammad Rafique Saeed Ur Rahman Muhammad Khalil Naveed Anwar |
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Institution: | 1. Department of Physics, Gomal University, Dera Ismail Khan, Pakistan 2. Directorate of Systems & Services, PINSTECH, P.O. Nilore, Islamabad, Pakistan 3. Department of Physics, University of Azad Jammu & Kashmir, Muzaffarabad, 13100, Azad Kashmir, Pakistan 4. Department of Medical Physics, Nuclear Medicine, Oncology and Radiotherapy Institute, Islamabad, Pakistan
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Abstract: | In order to carry out indoor radon measurement in new and old buildings of the Dera Ismail Khan city, CR-39 based radon detectors were installed in bed rooms and sitting rooms/TV lounges in 25 (each) old and new houses and were exposed to indoor radon for 90 days. After processing, mean weighted average indoor radon concentrations in old and new houses were found to be 275 ± 33 and 86 ± 18 Bq m?3 whereas mean annual effective doses expected to be received by the occupants were 6.86 ± 0.79 and 2.1 ± 0.43 mSv year?1, respectively. From the measured weighted average indoor radon concentration, excess relative risk factor was calculated using the risk model of BEIR VI for the age group of 35 and 55 years. Average excess lung cancer risk was found to be 1.63 ± 0.19 and 1.35 ± 0.16 and 0.5 ± 0.10 and 0.4 ± 0.08 for old and new houses, respectively. |
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