Monitoring of the contamination of air and ventilating discharges

Three monitoring methods - freezing (1), bubbling (2) and diffusion method (3) permitting to measure average HTO concentration in the air of working rooms, in ventilating discharges and in the technologic equipment for the period of sampling within the limits from 30 minutes to 7 days are proposed. The method (1) is based on the freezing of water vapours from the air under control and measuring HTO concentration in condensate obtained. The method (2) is based on the controlled air pumping through an absorber device-bubbler with subsequent measuring the HTO activity absorbed in the bubbler. The method (3) is based on measuring the HTO activity diffused from the air under control through a shell of polyvinylchloride and absorbed distilled water contained in the shell. The apparatus applied, methods error and sensitivity are considered