MEASUREMENT OF RADON EXHALATION RATE USING LOCAL TECHNIQUE

Radon concentration, exhalation, emanation rate for some Egyptian soil samples, different building materials and fertilizers has been measured by using a local radon chamber that was designed, constructed and tested in the laboratory. Two measurement methods (active and passive) were applied. It was found that the average of exhalation rate was lower than that defined by ICRP. The influence of humidity, temperature, grain size and surface area of samples on the radon parameters has also been discussed.