Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.414 IF 5.414
  • IF 5-year value: 5.958 IF 5-year
    5.958
  • CiteScore value: 9.7 CiteScore
    9.7
  • SNIP value: 1.517 SNIP 1.517
  • IPP value: 5.61 IPP 5.61
  • SJR value: 2.601 SJR 2.601
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 191 Scimago H
    index 191
  • h5-index value: 89 h5-index 89
Preprints
https://doi.org/10.5194/acp-2020-126
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2020-126
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 27 Feb 2020

Submitted as: research article | 27 Feb 2020

Review status
A revised version of this preprint was accepted for the journal ACP and is expected to appear here in due course.

Chemical Characterization of Secondary Organic Aerosol at a Rural Site in the Southeastern U.S.: Insights from Simultaneous HR-ToF-AMS and FIGAERO-CIMS Measurements

Yunle Chen1, Masayuki Takeuchi2, Theodora Nah1,a, Lu Xu3,b, Manjula R. Canagaratna4, Harald Stark4,5, Karsten Baumann6, Francesco Canonaco7, André S. H. Prévôt7, L. Gregory Huey1, Rodney J. Weber1, and Nga Lee Ng1,2,3 Yunle Chen et al.
  • 1School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA
  • 2School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
  • 3School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
  • 4Aerodyne Research, Inc., Billerica, MA 02138, USA
  • 5Department of Chemistry, University of Colorado at Boulder, Boulder, CO 80309, USA
  • 6Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
  • 7Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen 5232, Switzerland
  • anow at: School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, China
  • bnow at: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA

Abstract. The formation and evolution of secondary organic aerosol (SOA) was investigated at Yorkville, GA, in late summer (mid-August ~ mid-October, 2016). Organic aerosol (OA) composition was measured using two on-line mass spectrometry instruments, the high-resolution time-of-flight aerosol mass spectrometer (AMS) and the Filter Inlet for Gases and AEROsols coupled to a high-resolution time-of-flight iodide-adduct chemical ionization mass spectrometer (FIGAERO-CIMS). Through analysis of speciated organics data from FIGAERO-CIMS and factorization analysis of data obtained from both instruments, we observed notable SOA formation from isoprene and monoterpenes during both day and night. Specifically, in addition to isoprene epoxydiols (IEPOX) uptake, we identified isoprene SOA formation via hydroxyl hydroperoxide oxidation (ISOPOOH oxidation via non-IEPOX pathways) and isoprene organic nitrate formation via photooxidation in the presence of NOx and nitrate radical oxidation. Monoterpenes were found to be the most important SOA precursors at night. We observed significant contributions from highly-oxidized acid-like compounds to the aged OA factor from FIGAERO-CIMS. Taken together, our results showed that FIGAERO-CIMS measurements are highly complementary to the extensively used AMS factorization analysis, and together they provide more comprehensive insights into OA sources and composition.

Yunle Chen et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Yunle Chen et al.

Viewed

Total article views: 514 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
352 154 8 514 35 9 14
  • HTML: 352
  • PDF: 154
  • XML: 8
  • Total: 514
  • Supplement: 35
  • BibTeX: 9
  • EndNote: 14
Views and downloads (calculated since 27 Feb 2020)
Cumulative views and downloads (calculated since 27 Feb 2020)

Viewed (geographical distribution)

Total article views: 295 (including HTML, PDF, and XML) Thereof 295 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 05 Jul 2020
Publications Copernicus
Download
Short summary
Two on-line mass spectrometry instruments, an aerosol mass spectrometer and a chemical ionization mass spectrometer equipped with a filter inlet for gases and aerosols, were deployed at Yorkville, GA for a comprehensive characterization of organic aerosol. We observed notable secondary organic aerosol formation from isoprene and monoterpenes via different pathways during both day and night, and a series of highly-oxidized acid-like compounds was found to be closely related to aged SOA.
Two on-line mass spectrometry instruments, an aerosol mass spectrometer and a chemical...
Citation