Quantification of cooking organic aerosol in the indoor environment using aerodyne aerosol mass spectrometers

Katz, Erin F.; Guo, Hongyu; Campuzano-Jost, Pedro; Day, Douglas A.; Brown, Wyatt L.; Boedicker, Erin; Pothier, Matson; Lunderberg, David M.; Patel, Sameer; Patel, Kanan; Hayes, Patrick L.; Avery, Anita; Hildebrandt Ruiz, Lea; Goldstein, Allen H.; Vance, Marina E.; Farmer, Delphine K.; Jimenez, Jose L.; DeCarlo, Peter F.

doi:10.1080/02786826.2021.1931013

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Quantification of cooking organic aerosol in the indoor environment using aerodyne aerosol mass spectrometers

2021
By Katz, Erin F. ; Guo, Hongyu ; Campuzano-Jost, Pedro ; ...
Source: Aerosol Science and Technology, 55(10), 1099-1114

[PDF-3.70 MB]

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Journal Title:

Aerosol Science and Technology
Personal Author:

Katz, Erin F. ; Guo, Hongyu ; Campuzano-Jost, Pedro ; Day, Douglas A. ; Brown, Wyatt L. ; ... More +

Katz, Erin F. ; Guo, Hongyu ; Campuzano-Jost, Pedro ; Day, Douglas A. ; Brown, Wyatt L. ; Boedicker, Erin ; Pothier, Matson ; Lunderberg, David M. ; Patel, Sameer ; Patel, Kanan ; Hayes, Patrick L. ; Avery, Anita ; Hildebrandt Ruiz, Lea ; Goldstein, Allen H. ; Vance, Marina E. ; Farmer, Delphine K. ; Jimenez, Jose L. ; DeCarlo, Peter F. Less -
NOAA Program & Office:

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

The Aerodyne aerosol mass spectrometer (AMS) is used extensively to study the composition of non-refractory submicron aerosol composition during atmospheric field studies. During two recent studies of indoor environments, HOMEChem and ATHLETIC, the default ambient organic aerosol AMS quantification parameters resulted in a large discrepancy with co-located instruments while sampling cooking organic aerosol (COA). Instruments agreed within uncertainty estimates during all other sampling periods. Assuming a collection efficiency (CE) of unity, adjustments to the AMS relative ionization efficiency (RIE) were required to reach agreement with co-located instruments. The range of RIECOA observed (ATHLETIC: RIECOA = 4.26–4.96, HOMEChem: RIECOA = 4.70–6.50) was consistent with RIE measured in the laboratory for cooking-specific molecules. These results agree with prior AMS studies which have indicated that more oxidized outdoor ambient organic aerosol has a relatively constant RIE of 1.4 ± 0.3 while more reduced organics have higher RIE. The applicability of a higher RIE was considered for two ambient datasets, and agreement between the AMS and co-located instruments improved when an increased response factor (RIE × CE) was applied to positive matrix factorization-derived primary organic aerosol (POA). Based on the observations presented here and the literature, we recommend AMS users consider applying RIECOA=4.2 to source and indoor studies of COA and evaluate a higher POA response factor of the order of ∼1.5 in outdoor studies at urban background sites, and ∼2 at sites impacted by fresh sources. This study aims to improve AMS quantification methodology for reduced POA and highlights the importance of careful intercomparisons in field studies.
Keywords:

[+]

Environmental Chemistry General Materials Science Pollution
Source:

Aerosol Science and Technology, 55(10), 1099-1114
DOI:

https://doi.org/10.1080/02786826.2021.1931013
ISSN:

0278-6826;1521-7388;
Format:

PDF
Publisher:

Informa UK Limited
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
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Library
Main Document Checksum:

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urn:sha256:dc2ccc1f423182e10ec853d3104142583ff800d3f1ab7edaefd7fdc2ad697de0
Download URL:

https://repository.library.noaa.gov/view/noaa/53623/noaa_53623_DS1.pdf
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Quantification of cooking organic aerosol in the indoor environment using aerodyne aerosol mass spectrometers

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