Determination of exhalation rate of radon from walls and indoor radon by CR-39 detectors

Full text: The knowledge of true value exhalation rate of radon gas from building materials represents scientific and practical interest in environmental radiation protection. This point of view in the paper exhalation rate of radon gas from building materials and a surface of walls with different constructions were determined by detectors CR-39. The values of the exhalation rate of radon per unit area of the granite, concrete, fired and unfired bricks, sand, cement, alabaster varied 0.091 - 0.1 Bq·m-2·h-1. The surface of walls of dwellings constructed from different building materials the exhalation rate of radon are within in limits of 0.083-1.12 Bq·m-2·h-1. Were measurements with CR-39 detectors a level of radon within 50-520 Bq/m3 in air of rooms constructed of the different building materials