Consideration Of The Change Of Material Emission Signatures Due To Long-term Emissions For Enhancing Voc Source Identification

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

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


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 PTRMS. Source models, including powerlaw model, doubleexponential decay model and mechanistic diffusion model, were employed to track the change of individual material emission signatures by PTRMS over a ninemonth 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 50liter smallscale chamber. Chamber air was sampled by PTRMS over a 28day 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
Title of host publicationProceedings of Indoor Air 2011
Publication date2011
Publication statusPublished - 2011
Event12th International Conference on Indoor Air Quality and Climate - Austin, TX, United States
Duration: 5 Jun 201110 Jun 2011
Conference number: 12


Conference12th International Conference on Indoor Air Quality and Climate
CountryUnited States
CityAustin, TX
Internet address


  • Source identification
  • Longterm emission
  • VOC
  • Material emission signature

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