Consideration of the change of material emission signatures due to longterm emissions for enhancing VOC source identification

K. H. Han, J. S. Zhang, H. N. Knudsen, P. Wargocki, B. Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The objectives of this study were to characterize the changes of VOC material emission profiles over time and develop a method to account for such changes in order to enhance a source identification technique that is based on the measurements of mixed air samples and the emission signatures of individual building materials determined by PTR-MS. Source models, including power-law model, double-exponential decay model and mechanistic diffusion model, were employed to track the change of individual material emission signatures by PTR-MS over a nine-month period. Samples of nine typical building materials were tested individually for nine months and later in combination to obtain actual mixture emissions. VOC emissions from each material were measured in a 50-liter small-scale chamber. Chamber air was sampled by PTR-MS over a 28-day period to determine their emission rate decay characteristics as well as to establish the initial profile of emission signatures unique to individual materials tested.

Original languageEnglish (US)
Title of host publication12th International Conference on Indoor Air Quality and Climate 2011
Pages566-571
Number of pages6
StatePublished - Dec 1 2011
Event12th International Conference on Indoor Air Quality and Climate 2011 - Austin, TX, United States
Duration: Jun 5 2011Jun 10 2011

Publication series

Name12th International Conference on Indoor Air Quality and Climate 2011
Volume1

Other

Other12th International Conference on Indoor Air Quality and Climate 2011
CountryUnited States
CityAustin, TX
Period6/5/116/10/11

Keywords

  • Long-term emission
  • Material emission signature
  • PTR-MS
  • Source identification
  • VOC

ASJC Scopus subject areas

  • Pollution

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  • Cite this

    Han, K. H., Zhang, J. S., Knudsen, H. N., Wargocki, P., & Guo, B. (2011). Consideration of the change of material emission signatures due to longterm emissions for enhancing VOC source identification. In 12th International Conference on Indoor Air Quality and Climate 2011 (pp. 566-571). (12th International Conference on Indoor Air Quality and Climate 2011; Vol. 1).