Activated carbon samples were tested to determine their adsorption characteristics for radon. The amount of radon adsorbed was determined using the LSC method applied for the a radiation emitted by samples exposed to the air/radon mixtures of various humidity.
It has been found that carbon of the NPO type, produced by GRYFSKAND Ltd (Hajnówka, Poland) from the coconut shells, can be chosen from the various types of home produced activated carbons as the most efficient adsorbing material for the barrier reducing the radon emission from the radioactive cemetery. Because of the relatively great air humidity, prior to its application, activated charcoal must be carefully dried and mixed with the silica-gel.
The same material may be applied in radon metrology as the substituent of the expensive detectors produced commercially.