A solid sorbent for crotonaldehyde in air.
Mann-JH Jr.; Gold-A
Am Ind Hyg Assoc J 1986 Dec; 47(12):832-834
Studies were carried out to determine whether 13X molecular sieves of two different mesh sizes, Davison 8 to 12 mesh and Linde 60 to 80 mesh, can be used efficiently as solid sorbents for the sampling of crotonaldehyde (4170303) (CA) vapors. Molecular sieve sampling tubes and a constant flow sampler were used to collect samples of crotonaldehyde vapors generated in various concentrations, by a dynamic dilution apparatus of Pyrex glass with nitrogen as a carrier gas. The molecular sieve tubes were desorbed with distilled water and the desorbate analyzed by gas chromatography. Sampling with the 8 to 20 mesh sieves resulted in rapid breakthrough of CA, while the 60 to 80 mesh sieves worked satisfactorily and demonstrated dependence on particle size. The breakthrough of CA was delayed by water vapors. The experimental determination of the maximum allowable sample volume at 100 percent relative humidity and close to threshold limit value conditions could not be performed because of the instability of the vapor generator used. The recovery of CA was quantitative in all sampling tests, and no storage loss was recorded for molecular sieve tubes stored under various conditions of time and temperature. The authors conclude that 13X molecular sieves are an excellent sorbent for CA vapors.
AIHAPP; NIOSH-Publication; NIOSH-Grant; Aldehydes; Organic-chemicals; Air-sampling; Sampling-methods; Air-samplers; Sampling-equipment; Air-quality-control; Air-monitoring
American Industrial Hygiene Association Journal
Environmental Sciences & Engr Univ of North Carolina Sch of Public Health 201 H Chapel Hill, NC 27514