The storage of halogenated hydrocarbons in breath and air samples in glass cylindrical tubes was investigated to determine procedures to achieve a representative breath sampling technique. The loss of solvent vapor concentration over a fixed time period was observed and postulated to result from non-reactive absorption. If considerations are made for adverse sampling conditions of moisture, temperature, and tube surface condition, glass tubes prove to be an acceptable container for breath samples.
Air Pollutants, Occupational Breath Tests