Diffusion-controlled reference material for volatile organic compound emissions testing: pilot inter-laboratory study

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DOIResolve DOI: http://doi.org/10.1016/j.buildenv.2011.01.024
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TypeArticle
Journal titleBuilding and Environment
Volume46
Issue7
Pages15041511; # of pages: 8
Subjectinter-laboratory testing, toluene, material emission, chamber test
AbstractTo improve the reliability and accuracy of tests used to measure emissions of volatile organic compounds (VOCs) from samples of interior building products, the National Institute of Standards and Technology (NIST) and Virginia Tech (VT) have created a program to develop reference materials with independently predictable emission rates. A diffusive reference material and associated mechanistic model have been developed and are undergoing extensive evaluation. As part of this process, a pilot inter-laboratory study (ILS) was conducted with four laboratories using a polymer material loaded with toluene as the reference source. Results showed the prototype material to be a relatively stable, homogeneous source with consistent emissions both within and between production batches. A comparison of toluene emission rates determined by the laboratories showed relative standard deviations as low as 9 %, which are significantly lower than inter-laboratory variations for most previous ILS exercises with VOC sources. At a sample time of 48 h, the mean measured toluene emission rate for all four laboratories was within 1 % of the model-predicted value. The success of this pilot ILS is a key step toward being able to provide a VOC reference material for independent validation of VOC emission tests conducted in small chambers.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number54009
21595
NPARC number20374019
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Record identifier34c463bf-7e29-4c32-ad2d-ce7f0a7b45da
Record created2012-07-23
Record modified2016-05-09
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