Effective Dose Equivalent Rate for The Respiratory Tract from Daughter Products of RadonMuhammad Tufail, Nasır Ahmad, Mahmood A. Khan, Muhammad S. Zafar, Hameed A. KhanCenter for Nuclear Studies, P. O. Nilore, Islamabad; Physics Department, Government Science College, Lahore; Physics Department, University of the Punjab, Lahore; SSNTD-Laboratory, NED, PINSTECH, P. O. Nilore, Islamabad, Pakistan.
Using standard models, the dose and dose equivalent received by tracheobronchial (T-B) and pulmonary (P) regions of human lung from exposure to radon daughter products have been estimated. Effective dose equivalent rates determined by OECD, ICRP and UNSCEAR have been compared and the conversion factor of (7-17) nSv h-1 per Bq m-3 recommended by ICRP has been adapted to find out dose equivalent rate for the house dwellers in the Pakistani cities of Islamabad/Rawalpindi and Lahore. In the bed rooms of these cities an estimated dose equivalent rate of 2 mSv per year was found. For mine workers the conversion factor of 10 mSv y-1 per WLM was adapted. The mine workers of Makarwal Coal Mines (Pakistan) receive 8-12 mSv y-1 which is 4 to 6 times higher than the value for houses in the cities of Islamabad, Rawalpindi and Lahore. Keywords: Radon daughter products, tracheobronchial and pulmonary regions, effective dose equivalent rate, dwellings, coal mines.
Muhammad Tufail, Nasır Ahmad, Mahmood A. Khan, Muhammad S. Zafar, Hameed A. Khan. Effective Dose Equivalent Rate for The Respiratory Tract from Daughter Products of Radon. Med J Islamic World Acad Sci. 1992; 5(2): 136-141
Corresponding Author: Muhammad Tufail, Pakistan |
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