Origin, occurrence, and source emission rate of acrolein in residential indoor air

Vincent Y. Seaman, Deborah H. Bennett, Thomas Cahill

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


Acrolein, a volatile, unsaturated aldehyde, is a known respiratory toxicant and one of the 188 most hazardous air pollutants identified by the U.S. EPA. A newly developed analytical method was used to determine residential indoor air concentrations of acrolein and other volatile aldehydes in nine homes located in three California counties (Los Angeles, Placer, Yolo). Average indoor air concentrations of acrolein were an order of magnitude higher than outdoor concentrations at the same time. All homes showed similar diurnal patterns in indoor air concentrations, with acrolein levels in evening samples up to 2.5 times higher than morning samples. These increases were strongly correlated with temperature and cooking events, and homes with frequent, regular cooking activity had the highest baseline (morning) acrolein levels. High acrolein concentrations were also found in newly built, uninhabited homes and in emissions from lumber commonly used in home construction, suggesting indoor contributionsfrom off-gassing and/or secondary formation. The results provide strong evidence that human exposure to acrolein is dominated by indoor air with little contribution from ambient outdoor air.

Original languageEnglish (US)
Pages (from-to)6940-6946
Number of pages7
JournalEnvironmental Science and Technology
Issue number20
StatePublished - Oct 15 2007

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry


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