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Sources and dynamics of semivolatile organic compounds in a single-family residence in northern California

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

DOI

  • Kasper Kristensen
  • David M. Lunderberg, Univ Calif Berkeley, University of California Berkeley, University of California System, Dept Chem
  • ,
  • Yingjun Liu, Peking Univ, Peking University, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con
  • ,
  • Pawel K. Misztal, Univ Calif Berkeley, University of California Berkeley, University of California System, Dept Environm Sci Policy & Management
  • ,
  • Yilin Tian, Univ Calif Berkeley, University of California System, University of California Berkeley, Dept Civil & Environm Engn
  • ,
  • Caleb Arata, Univ Calif Berkeley, University of California Berkeley, University of California System, Dept Chem
  • ,
  • William W. Nazaroff, Univ Calif Berkeley, University of California System, University of California Berkeley, Dept Civil & Environm Engn
  • ,
  • Allen H. Goldstein, Univ Calif Berkeley, University of California System, University of California Berkeley, Dept Civil & Environm Engn

Semivolatile organic compounds (SVOCs) emitted from building materials, consumer products, and occupant activities alter the composition of air in residences where people spend most of their time. Exposures to specific SVOCs potentially pose risks to human health. However, little is known about the chemical complexity, total burden, and dynamic behavior of SVOCs in residential environments. Furthermore, little is known about the influence of human occupancy on the emissions and fates of SVOCs in residential air. Here, we present the first-ever hourly measurements of airborne SVOCs in a residence during normal occupancy. We employ state-of-the-art semivolatile thermal-desorption aerosol gas chromatography (SV-TAG). Indoor air is shown consistently to contain much higher levels of SVOCs than outdoors, in terms of both abundance and chemical complexity. Time-series data are characterized by temperature-dependent elevated background levels for a broad suite of chemicals, underlining the importance of continuous emissions from static indoor sources. Substantial increases in SVOC concentrations were associated with episodic occupant activities, especially cooking and cleaning. The number of occupants within the residence showed little influence on the total airborne SVOC concentration. Enhanced ventilation was effective in reducing SVOCs in indoor air, but only temporarily; SVOCs recovered to previous levels within hours.

OriginalsprogEngelsk
TidsskriftIndoor Air
Vol/bind29
Nummer4
Sider (fra-til)645-655
Antal sider11
ISSN0905-6947
DOI
StatusUdgivet - jul. 2019
Eksternt udgivetJa

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