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Title: Formaldehyde surface emission monitor

A passive surface emission monitor has been developed for nondestructive measurement of formaldehyde (CH/sub 2/O) emission rates from CH/sub 2/O resin-containing materials such as urea-formaldehyde foam insulation (UFFI) and pressed-wood products. Emitted CH/sub 2/O is sorbed by a planar distribution of 13X molecular sleve supported inside the monitor and analyzed by using a water-rinse desorption, colorimetric analysis procedure. A detection limit of similarly ordered 0.025 mg of CH/sub 2/O/(M/sup 2/ h) is achieved with a 20.3 cm diameter monitor and a 2-h collection period. Measurements of CH/sub 2/O emission rates from pressed-wood products and UFFI encased in simulated wall panels show a strong correlation with reference chamber techniques. The surface monitor has been used to measure the CH/sub 2/O emission rate from interior walls and floors in one UFFI and two non-UFFI homes. By application of a simple single compartment model to predict indoor CH/sub 2/O concentrations from in situ CH/sub 2/O emission rate and tracer gas infiltration rate measurements, a good correlation between the predicted and measured CH/sub 2/O concentrations was achieved. 22 references, 5 figures, 4 tables.
Authors:
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Publication Date:
OSTI Identifier:
5880555
DOE Contract Number:
W-7405-ENG-26
Resource Type:
Journal Article
Resource Relation:
Journal Name: Anal. Chem.; (United States); Journal Volume: 56:3
Research Org:
Oak Ridge National Lab., TN
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; FIBERGLASS; QUANTITATIVE CHEMICAL ANALYSIS; FORMALDEHYDE; ABSORPTION SPECTROSCOPY; TEXTILES; UREA-FORMALDEHYDE FOAMS; AIR POLLUTION ABATEMENT; COLORIMETRIC DOSEMETERS; EXPERIMENTAL DATA; MATHEMATICAL MODELS; ALDEHYDES; CHEMICAL ANALYSIS; COLLOIDS; DATA; DISPERSIONS; DOSEMETERS; FOAMS; INFORMATION; MEASURING INSTRUMENTS; NUMERICAL DATA; ORGANIC COMPOUNDS; POLLUTION ABATEMENT; SPECTROSCOPY 400104* -- Spectral Procedures-- (-1987); 500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989)