Chemical emission rates from personal computers

T. Nakagawa, Pawel Wargocki, S. Tanabe, Charles J. Weschler, S. Baginska, Zsolt Bako-Biro, Povl Ole Fanger

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


Chemical emission measurements from different brands of personal computers (PCs) were conducted in a 1 m3 glass chamber. Eight PCs were tested individually. Each consisted of the same brand of PC tower and one of the 4 different brands of PC monitors. Within each brand both cathode-ray tube (CRT) and thin-film transistor (TFT) flat panel monitors were evaluated. Volatile organic compounds (VOCs) and aldehydes were quantified using GC/MS and HPLC, respectively. Compared with PCs with TFT monitors, PCs with CRT monitors had slightly higher emission rates of formaldehyde and acetaldehyde, emitted greater quantities of C3-C6 aldehydes having low odor thresholds and had higher emissions of aromatic hydrocarbons. Emission rates of aliphatic hydrocarbons were low for both PCs with CRT and TFT monitors. However, estimated concentrations of these chemicals in a normal office space based on the measured emission rates were much lower than the odour thresholds.
Original languageEnglish
Title of host publicationHealthy Buildings 2003 : Proceedings of the 7th International Conference
Place of PublicationSingapore
PublisherHealthy Buildings
Publication date2003
Publication statusPublished - 2003
Event7th International Conference on Healthy Buildings 2003 - Singapore, Singapore
Duration: 7 Dec 200311 Dec 2003
Conference number: 7


Conference7th International Conference on Healthy Buildings 2003
Internet address


  • Aldehydes
  • VOC
  • Emissions
  • Personal computers
  • Electronic equipment


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