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Volume 6, 2011 - Number 1
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ASSESSMENT OF INDOOR RADON DOSES RECEIVED BY THE DWELLERS OF BALAKOT – NWFP, PAKISTAN: A PILOT STUDY
Muhammad RAFIQUE1, MATIULLAH2, Saeed ur RAHMAN3, Said RAHMAN4, Muhammad Ikram SHAHZAD2, Bushra AZAM1, Ishfaq AHMED1, Abdul MAJID1 & Muhammad Iqbal SIDDIQUE5
1Department of Physics University of Azad Jammu & Kashmir Muzaffarbad, 13100, Azad Kashmir, Pakistan e-mail: rafi_722002@yahoo.com, mrafique@gmail.com 2Physics Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan 3Department of Medical Physics, Nuclear Medicine, Oncology and Radiotherapy Institute, Islamabad, Pakistan 4PAS Dte Division SPARCENT, SUPARCO HQs, Karachi, Pakistan 5Institute of Geology University of Azad Jammu and Kashmir Muzafarabad, Azad Kashmir ASSESSMENT OF INDOOR RADON DOSES RECEIVED BY THE DWELLERS OF BALAKOT – NWFP, PAKISTAN: A PILOT STUDY Full text
Abstract:
An indoor radon measurement survey has been carried out in the dwellings of Balakot city of North West Frontier Province of Pakistan using CR-39 based radon detectors. The main objective of this survey was to estimate radiation doses received by the dwellers of the Balakot city due to the indoor radon exposure. For this purpose CR-39 based radon detectors were installed in bedrooms and living rooms of 50 randomly selected houses. After 90 days of radon exposure, CR-39 detectors were etched for 9 h in 6 M NaOH at 70 oC and the observed track densities were related to radon concentrations. The measured indoor radon concentration ranged from 15±8 to 267±3 Bq m-3 and 15±8 to 205±3 Bq m-3 in bedrooms and living rooms, respectively. Weighted average radon concentration varied from 16±8 to 222±3 Bq m-3. Based on the measured indoor radon data, the annual effective doses were found to vary from 0.30±0.20 to 5.60±0.08 mSv y-1. The overall mean effective dose for the studied area was found to be 1.69 ± 0.15 mSv y-1. |
(c) 2006 - 2024 , Publisher-Asociația Carpatică de Mediu și Științele Pământului (Carpathian Association of Environment and Earth Sciences) |