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Title: Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry

Abstract

The House Observations of Microbial and Environmental Chemistry (HOMEChem) study is a collaborative field investigation designed to probe how everyday activities influence the emissions, chemical transformations and removal of trace gases and particles in indoor air. Sequential and layered experiments in a research house included cooking, cleaning, variable occupancy, and window-opening. This paper describes the overall design of HOMEChem and presents preliminary case studies investigating the concentrations of reactive trace gases, aerosol particles, and surface films. Cooking was a large source of VOCs, CO2, NOx, and particles. By number, cooking particles were predominantly in the ultrafine mode. Organic aerosol dominated the submicron mass, and, while variable between meals and throughout the cooking process, was dominated by components of hydrocarbon character and low oxygen content, similar to cooking oil. Air exchange in the house ensured that cooking particles were present for only short periods. During unoccupied background intervals, particle concentrations were lower indoors than outdoors. The cooling coils of the house ventilation system induced cyclic changes in water soluble gases. Even during unoccupied periods, concentrations of many organic trace gases were higher indoors than outdoors, consistent with housing materials being potential sources of these compounds to the outdoor environment. Organic materialmore » accumulated on indoor surfaces, and exhibited chemical signatures similar to indoor organic aerosol.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [1]; ORCiD logo [4];  [5];  [1];  [6];  [6];  [7]; ORCiD logo [8]; ORCiD logo [5]; ORCiD logo [4]; ORCiD logo [6]; ORCiD logo [9]; ORCiD logo [10]; ORCiD logo [8];  [1]; ORCiD logo [5];  [6] more »; ORCiD logo [11]; ORCiD logo [4];  [2]; ORCiD logo [2]; ORCiD logo [12];  [5];  [6]; ORCiD logo [3]; ORCiD logo [13];  [1] « less
  1. Colorado State Univ., Fort Collins, CO (United States)
  2. Univ. of Colorado, Boulder, CO (United States)
  3. Univ. of Toronto, ON (Canada)
  4. Univ. of California. San Diego, CA (United States)
  5. Univ. of California, Berkeley, CA (United States)
  6. Univ. of Texas, Austin, TX (United States)
  7. Portland State Univ., OR (United States)
  8. Drexel Univ., Philadelphia, PA (United States)
  9. Univ. of Colorado, Boulder, CO (United States)
  10. Syracuse Univ., NY (United States); Univ. of Saskatchewan, Saskatoon, SK (Canada)
  11. College of William and Mary, Williamsburg, VA (United States)
  12. Indiana Univ., Bloomington, IN (United States)
  13. Syracuse Univ., NY (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Alfred P. Sloan Foundation
OSTI Identifier:
1604696
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Environmental Science: Processes & Impacts
Additional Journal Information:
Journal Volume: 21; Journal Issue: 8; Journal ID: ISSN 2050-7887
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Farmer, D. K., Vance, M. E., Abbatt, J. P. D., Abeleira, A., Alves, M. R., Arata, C., Boedicker, E., Bourne, S., Cardoso-Saldaña, F., Corsi, R., DeCarlo, P. F., Goldstein, A. H., Grassian, V. H., Hildebrandt Ruiz, L., Jimenez, J. L., Kahan, T. F., Katz, E. F., Mattila, J. M., Nazaroff, W. W., Novoselac, A., O'Brien, R. E., Or, V. W., Patel, S., Sankhyan, S., Stevens, P. S., Tian, Y., Wade, M., Wang, C., Zhou, S., and Zhou, Y. Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry. United States: N. p., 2019. Web. https://doi.org/10.1039/c9em00228f.
Farmer, D. K., Vance, M. E., Abbatt, J. P. D., Abeleira, A., Alves, M. R., Arata, C., Boedicker, E., Bourne, S., Cardoso-Saldaña, F., Corsi, R., DeCarlo, P. F., Goldstein, A. H., Grassian, V. H., Hildebrandt Ruiz, L., Jimenez, J. L., Kahan, T. F., Katz, E. F., Mattila, J. M., Nazaroff, W. W., Novoselac, A., O'Brien, R. E., Or, V. W., Patel, S., Sankhyan, S., Stevens, P. S., Tian, Y., Wade, M., Wang, C., Zhou, S., & Zhou, Y. Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry. United States. https://doi.org/10.1039/c9em00228f
Farmer, D. K., Vance, M. E., Abbatt, J. P. D., Abeleira, A., Alves, M. R., Arata, C., Boedicker, E., Bourne, S., Cardoso-Saldaña, F., Corsi, R., DeCarlo, P. F., Goldstein, A. H., Grassian, V. H., Hildebrandt Ruiz, L., Jimenez, J. L., Kahan, T. F., Katz, E. F., Mattila, J. M., Nazaroff, W. W., Novoselac, A., O'Brien, R. E., Or, V. W., Patel, S., Sankhyan, S., Stevens, P. S., Tian, Y., Wade, M., Wang, C., Zhou, S., and Zhou, Y. Mon . "Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry". United States. https://doi.org/10.1039/c9em00228f. https://www.osti.gov/servlets/purl/1604696.
@article{osti_1604696,
title = {Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry},
author = {Farmer, D. K. and Vance, M. E. and Abbatt, J. P. D. and Abeleira, A. and Alves, M. R. and Arata, C. and Boedicker, E. and Bourne, S. and Cardoso-Saldaña, F. and Corsi, R. and DeCarlo, P. F. and Goldstein, A. H. and Grassian, V. H. and Hildebrandt Ruiz, L. and Jimenez, J. L. and Kahan, T. F. and Katz, E. F. and Mattila, J. M. and Nazaroff, W. W. and Novoselac, A. and O'Brien, R. E. and Or, V. W. and Patel, S. and Sankhyan, S. and Stevens, P. S. and Tian, Y. and Wade, M. and Wang, C. and Zhou, S. and Zhou, Y.},
abstractNote = {The House Observations of Microbial and Environmental Chemistry (HOMEChem) study is a collaborative field investigation designed to probe how everyday activities influence the emissions, chemical transformations and removal of trace gases and particles in indoor air. Sequential and layered experiments in a research house included cooking, cleaning, variable occupancy, and window-opening. This paper describes the overall design of HOMEChem and presents preliminary case studies investigating the concentrations of reactive trace gases, aerosol particles, and surface films. Cooking was a large source of VOCs, CO2, NOx, and particles. By number, cooking particles were predominantly in the ultrafine mode. Organic aerosol dominated the submicron mass, and, while variable between meals and throughout the cooking process, was dominated by components of hydrocarbon character and low oxygen content, similar to cooking oil. Air exchange in the house ensured that cooking particles were present for only short periods. During unoccupied background intervals, particle concentrations were lower indoors than outdoors. The cooling coils of the house ventilation system induced cyclic changes in water soluble gases. Even during unoccupied periods, concentrations of many organic trace gases were higher indoors than outdoors, consistent with housing materials being potential sources of these compounds to the outdoor environment. Organic material accumulated on indoor surfaces, and exhibited chemical signatures similar to indoor organic aerosol.},
doi = {10.1039/c9em00228f},
journal = {Environmental Science: Processes & Impacts},
number = 8,
volume = 21,
place = {United States},
year = {2019},
month = {7}
}

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