Surface reservoirs dominate dynamic gas-surface partitioning of many indoor air constituents

Science Advances
Chen WangJonathan P D Abbatt

Abstract

Human health is affected by indoor air quality. One distinctive aspect of the indoor environment is its very large surface area that acts as a poorly characterized sink and source of gas-phase chemicals. In this work, air-surface interactions of 19 common indoor air contaminants with diverse properties and sources were monitored in a house using fast-response, on-line mass spectrometric and spectroscopic methods. Enhanced-ventilation experiments demonstrate that most of the contaminants reside in the surface reservoirs and not, as expected, in the gas phase. They participate in rapid air-surface partitioning that is much faster than air exchange. Phase distribution calculations are consistent with the observations when assuming simultaneous equilibria between air and large weakly polar and polar absorptive surface reservoirs, with acid-base dissociation in the polar reservoir. Chemical exposure assessments must account for the finding that contaminants that are fully volatile under outdoor air conditions instead behave as semivolatile compounds indoors.

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Citations

Apr 2, 2020·Indoor Air·William W Nazaroff, Charles J Weschler
Oct 7, 2020·Indoor Air·Antoine DepoorterChristian George
Jan 7, 2021·Indoor Air·William W Nazaroff
Feb 3, 2021·Proceedings of the National Academy of Sciences of the United States of America·Yingjun LiuAllen H Goldstein
May 5, 2021·Environmental Science & Technology·David M LunderbergAllen H Goldstein
May 26, 2021·Environmental Science & Technology·Tianren WuErnest R Blatchley
Jun 3, 2021·Proceedings of the National Academy of Sciences of the United States of America·Qifan Liu, Jonathan P D Abbatt
May 27, 2021·Environmental Science. Processes & Impacts·Aiden C Heeley-HillGreg Adamson
Jul 18, 2021·Indoor Air·Caleb ArataAllen H Goldstein
Aug 4, 2021·Environmental Science & Technology·Heather Schwartz-NarbonneJeffrey A Siegel
Dec 8, 2020·Environmental Science & Technology·Allen H GoldsteinJonathan Williams
Dec 11, 2020·Environmental Science & Technology·Elliott T GallAurélie Laguerre
Dec 16, 2020·Environmental Science & Technology·Clara M A EichlerJohn C Little
May 8, 2020·Environmental Science & Technology·David LunderbergAllen H Goldstein
Dec 2, 2020·Environmental Science & Technology·Shan ZhouTara F Kahan
Nov 7, 2020·Environmental Science & Technology·Christopher Y Lim, Jonathan P Abbatt
Oct 17, 2020·Environmental Science & Technology·Chen WangJonathan P D Abbatt
Sep 1, 2021·Environmental Science & Technology·Douglas B Collins, Delphine K Farmer
Sep 21, 2021·Environmental Science. Processes & Impacts·Zhizhen ZhangLi Li

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Software Mentioned

LabVIEW
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