Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry

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.

doi:10.1039/C9EM00228F

i

Overview of HOMEChem: House Observations of Microbial and Environmental Chemistry

2019
By Farmer, D. K. ; Vance, M. E. ; Abbatt, J. P. D. ; ...

Details

Journal Title:

Environmental Science: Processes & Impacts
Personal Author:

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.
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

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.
Keywords:

Indoor air quality
Source:

Environ. Sci.: Processes Impacts, 2019,21, 1280-1300
DOI:

https://doi.org/10.1039/C9EM00228F
Document Type:

Journal Article
Rights Information:

CC BY-NC-ND
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:1bd608f1d8a6ebfb6f78b27027663e6c554fdf4f1e0201ac5b4c4b4dfcff89e972761dcc27da8812ceb1a70bf18c139be412dba50fe66af01e3b962fa6550336
Download URL:

https://repository.library.noaa.gov/view/noaa/24994/noaa_24994_DS1.pdf
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[PDF - 2.53 MB ]

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