title: 14CO2-in-air sampling with passive diffusion samplers.
abstract: Passive diffusion samplers designed for measuring HTO-in-air have been evaluated for measuring 14CO2-in-air. Controlled exposures to HTO-in-air, 14CO2-in-air, and a combination of the two gases were carried out. The sampling rate of the 14CO2-in-air was found to be approximately 0.7 that of HTO-in-air. This value is consistent with the calculated relative sampling rates based on the diffusion coefficients of the gases. Passive diffusion samplers currently used for sampling HTO-in-air at CANDU facilities have been shown to be suitable for also measuring 14CO2-in-air and HTO-in-air simultaneously when prepared with the appropriate sampling solution.
authors.affiliation: AECL, Chalk River Laboratories, Ontario.
authors.forename: M J
authors.initials: MJ
authors.lastname: Wood
authors.forename: R A
authors.initials: RA
authors.lastname: Surette
authors.forename: J K
authors.initials: JK
authors.lastname: Mohindra
authors.forename: J G
authors.initials: JG
authors.lastname: Patterson
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D002245:Carbon Dioxide; D002250:Carbon Radioisotopes / Q000032:analysis*; D004058:Diffusion; D011834:Radiation Monitoring / Q000295:instrumentation*
chemical_list: D000396:Air Pollutants, Radioactive; D002250:Carbon Radioisotopes; D002245:Carbon Dioxide