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Title: Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water

Abstract

Organic aerosol formation and transformation occurs within aqueous aerosol and cloud droplets, yet little is known about the composition of high molecular weight organic compounds in cloud water. Cloud water samples collected at Whiteface Mountain, New York, during August-September 2014 were analyzed by ultra-high-resolution mass spectrometry to investigate the molecular composition of dissolved organic carbon, with a focus on sulfur- and nitrogen-containing compounds. Organic molecular composition was evaluated in the context of cloud water inorganic ion concentrations, pH, and total organic carbon concentrations to gain insights into the sources and aqueous-phase processes of the observed high molecular weight organic compounds. Cloud water acidity was positively correlated with the average oxygen : carbon ratio of the organic constituents, suggesting the possibility for aqueous acid-catalyzed (prior to cloud droplet activation or during/after cloud droplet evaporation) and/or radical (within cloud droplets) oxidation processes. Many tracer compounds recently identified in laboratory studies of bulk aqueous-phase reactions were identified in the cloud water. Organosulfate compounds, with both biogenic and anthropogenic volatile organic compound precursors, were detected for cloud water samples influenced by air masses that had traveled over forested and populated areas. Oxidation products of long-chain (C10-12) alkane precursors were detected during urban influence. Influence ofmore » Canadian wildfires resulted in increased numbers of identified sulfur-containing compounds and oligomeric species, including those formed through aqueous-phase reactions involving methylglyoxal. Light-absorbing aqueous-phase products of syringol and guaiacol oxidation were observed in the wildfire-influenced samples, and dinitroaromatic compounds were observed in all cloud water samples (wildfire, biogenic, and urban-influenced). Overall, the cloud water molecular composition depended on air mass source influence and reflected aqueous-phase reactions involving biogenic, urban, and biomass burning precursors.« less

Authors:
 [1]; ORCiD logo [2];  [3];  [4];  [5];  [6];  [1];  [7];  [5]; ORCiD logo [8]; ORCiD logo [9]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemistry
  2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemistry and Michigan Society of Fellows; Univ. of California, Riverside, CA (United States). Dept. of Environmental Sciences
  3. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemistry; Univ. of Washington, Seattle, WA (United States). Dept. of Chemistry
  4. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemistry; Purdue Univ., West Lafayette, IN (United States). College of Veterinary Medicine
  5. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
  6. Adirondack Lake Survey Corp. (ALSC), Ray Brook, NY (United States)
  7. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemistry; Northwestern Univ., Evanston, IL (United States). Dept.of Chemistry
  8. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL); Purdue Univ., West Lafayette, IN (United States). Dept. of Chemistry
  9. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemistry and Dept. of Earth and Environmental Sciences
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER); New York State Energy Research and Development Authority (NYSERDA); New York State Department of Environmental Conservation (NYSDEC); Univ. of Michigan, Ann Arbor, MI (United States); National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States)
OSTI Identifier:
1434664
Alternate Identifier(s):
OSTI ID: 1427924
Report Number(s):
PNNL-SA-130575
Journal ID: ISSN 1680-7324
Grant/Contract Number:  
53968; AC05-76RL01830
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Volume: 17; Journal Issue: 24; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Environmental Molecular Sciences Laboratory

Citation Formats

Cook, Ryan D., Lin, Ying-Hsuan, Peng, Zhuoyu, Boone, Eric, Chu, Rosalie K., Dukett, James E., Gunsch, Matthew J., Zhang, Wuliang, Tolic, Nikola, Laskin, Alexander, and Pratt, Kerri A. Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water. United States: N. p., 2017. Web. doi:10.5194/ACP-17-15167-2017.
Cook, Ryan D., Lin, Ying-Hsuan, Peng, Zhuoyu, Boone, Eric, Chu, Rosalie K., Dukett, James E., Gunsch, Matthew J., Zhang, Wuliang, Tolic, Nikola, Laskin, Alexander, & Pratt, Kerri A. Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water. United States. https://doi.org/10.5194/ACP-17-15167-2017
Cook, Ryan D., Lin, Ying-Hsuan, Peng, Zhuoyu, Boone, Eric, Chu, Rosalie K., Dukett, James E., Gunsch, Matthew J., Zhang, Wuliang, Tolic, Nikola, Laskin, Alexander, and Pratt, Kerri A. 2017. "Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water". United States. https://doi.org/10.5194/ACP-17-15167-2017. https://www.osti.gov/servlets/purl/1434664.
@article{osti_1434664,
title = {Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water},
author = {Cook, Ryan D. and Lin, Ying-Hsuan and Peng, Zhuoyu and Boone, Eric and Chu, Rosalie K. and Dukett, James E. and Gunsch, Matthew J. and Zhang, Wuliang and Tolic, Nikola and Laskin, Alexander and Pratt, Kerri A.},
abstractNote = {Organic aerosol formation and transformation occurs within aqueous aerosol and cloud droplets, yet little is known about the composition of high molecular weight organic compounds in cloud water. Cloud water samples collected at Whiteface Mountain, New York, during August-September 2014 were analyzed by ultra-high-resolution mass spectrometry to investigate the molecular composition of dissolved organic carbon, with a focus on sulfur- and nitrogen-containing compounds. Organic molecular composition was evaluated in the context of cloud water inorganic ion concentrations, pH, and total organic carbon concentrations to gain insights into the sources and aqueous-phase processes of the observed high molecular weight organic compounds. Cloud water acidity was positively correlated with the average oxygen : carbon ratio of the organic constituents, suggesting the possibility for aqueous acid-catalyzed (prior to cloud droplet activation or during/after cloud droplet evaporation) and/or radical (within cloud droplets) oxidation processes. Many tracer compounds recently identified in laboratory studies of bulk aqueous-phase reactions were identified in the cloud water. Organosulfate compounds, with both biogenic and anthropogenic volatile organic compound precursors, were detected for cloud water samples influenced by air masses that had traveled over forested and populated areas. Oxidation products of long-chain (C10-12) alkane precursors were detected during urban influence. Influence of Canadian wildfires resulted in increased numbers of identified sulfur-containing compounds and oligomeric species, including those formed through aqueous-phase reactions involving methylglyoxal. Light-absorbing aqueous-phase products of syringol and guaiacol oxidation were observed in the wildfire-influenced samples, and dinitroaromatic compounds were observed in all cloud water samples (wildfire, biogenic, and urban-influenced). Overall, the cloud water molecular composition depended on air mass source influence and reflected aqueous-phase reactions involving biogenic, urban, and biomass burning precursors.},
doi = {10.5194/ACP-17-15167-2017},
url = {https://www.osti.gov/biblio/1434664}, journal = {Atmospheric Chemistry and Physics (Online)},
issn = {1680-7324},
number = 24,
volume = 17,
place = {United States},
year = {Thu Dec 21 00:00:00 EST 2017},
month = {Thu Dec 21 00:00:00 EST 2017}
}

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Cited by: 43 works
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Figures / Tables:

Table 1 Table 1: Summary of the sampling times, as well as inorganic ion concentrations, pH, and TOC concentrations, for cloud water samples from the Whiteface Mountain Observatory. Cloud water samples were collected with 3 h resolution (local time: EDT). Values below the method limit of detection for Na+ are noted asmore » “bdl”. The 95 % confidence intervals are shown for August–September 2014 averages.« less

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Works referenced in this record:

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Composition Domains in Monoterpene Secondary Organic Aerosol
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Does toxicity of aromatic pollutants increase under remote atmospheric conditions?
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Works referencing / citing this record:

Molecular insights on aging and aqueous-phase processing from ambient biomass burning emissions-influenced Po Valley fog and aerosol
journal, January 2018


Molecular and physical characteristics of aerosol at a remote free troposphere site: implications for atmospheric aging
journal, January 2018


Heterogeneous OH oxidation of secondary brown carbon aerosol
journal, January 2018


Is there an aerosol signature of chemical cloud processing?
journal, January 2018


Photomineralization mechanism changes the ability of dissolved organic matter to activate cloud droplets and to nucleate ice crystals
journal, January 2019


Is there an aerosol signature of chemical cloud processing?
journal, January 2018


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.