Abbasi, AkbarTulucu, FadimeAlmousa, NoufMirekhtiary, FatemehZakaly, Hesham M. H.2024-05-192024-05-1920230236-57311588-2780https://doi.org10.1007/s10967-023-09209-4https://hdl.handle.net/20.500.12713/5546The blocking effect of Rn-222 gas and its progeny by various face masks has been determined using a measurement system with a parallel AlphaGUARD detector. The theoretical approach of diffusion rate for different particle sizes was calculated. The filtering effect of the different masks followed the order N99 > surgical > N95 > double cloth > double cellulose > cloth > cellulose masks, respectively. Overall the blocking effect percentage ranged between 7.65 and 22.66%. The study indicated that the effect of a mask with high quality in filtering the gas of Rn-222 and its decay products is more than the double-layer masks.eninfo:eu-repo/semantics/closedAccessRn-222MaskBlocking EffectDiffusion RateParticle SizeArticle3321250175022WOS:0010941006000032-s2.0-85174909062N/A10.1007/s10967-023-09209-4Q2