Generation of constant formaldehyde levels for inhalation studies

Journal Article · Thu Oct 31 23:00:00 EST 1985 · Am. Ind. Hyg. Assoc. J.; (United States)

DOI:https://doi.org/10.1080/15298668591395544· OSTI ID:6199136

Balmat, J L

Development of the described formaldehyde generator was undertaken to provide researchers engaged in inhalation studies with the capability to produce constant and controllable levels of formaldehyde in air. Depolymerization of purified paraformaldehyde under rigorously controlled conditions in a modified Freeland calibration manifold is employed. The desired formaldehyde concentration in the exposure chamber is achieved by adding an appropriate fraction of the generator effluent to the normal air supply to the chamber. Variation in generator formaldehyde concentration is less than +/- 11% over a three-day period and less than +/- 2% over short periods (36 seconds).

• Research Organization: E.I. DuPont de Nemours, Wilmington, DE
• OSTI ID: 6199136
• Journal Information: Am. Ind. Hyg. Assoc. J.; (United States), Journal Name: Am. Ind. Hyg. Assoc. J.; (United States) Vol. 46:11; ISSN AIHAA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL GENERATORS
AIR POLLUTION
ALDEHYDES
DESIGN
ECOLOGICAL CONCENTRATION
EXPOSURE CHAMBERS
FORMALDEHYDE
INHALATION
INTAKE
ORGANIC COMPOUNDS
POLLUTION