Abstract
Radon concentrations and exhalation rate were measured using Can Technique with CR-39 plastic track detectors for phosphate rocks samples from Safaga and El-Hamrawayn areas in the Eastern Desert, Egypt. The values of radon concentrations ranged from 1362.21- 20045.30 Bqm-3, 764.84 -17828.48 Bqm-3 and the values of surface exhalation rate ranged from 1.22-18.07 Bqm-2h-1, 1.09-16.07 Bqm-2h-1 for Safaga and El-Hamrawayn, respectively. From the results we can conclude that the values of radon concentration in Safaga higher than El-Hamrawayn. The present study aimed to detect any harmful radiation that would affect the human and radioactivity background levels
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