- Author
-
Silberstein, S.
- Title
- Gypsum Wallboard Formaldehyde Sorption Model.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NISTIR 89-4028,
1989,
21 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
formaldehyde
|
gysum
|
indoor air quality
|
modeling
|
pollutant
|
sorption
|
source-sink
|
wallboard
- Abstract
- Gypsum wallboard was shown to absorb formaldehydr in a prototype house and in a measuring chamber, as reported previously by researchers at Oak Ridge National Laboratory (ORNL). Also as reported previously, formaldehyde concentrations attained equilibrium in two phases in response to a change in the air exchange rate or to the removal of the formaldehyde source. A rapid initial phase was followed by a slow phase lasting several days. A formaldehyde sorption model that accounts for the biphasic concentration pattern is presented here. Experiments for testing the predictability of the model are proposed.