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Title: Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: Inter- and intra-species variability for six coniferous species

Abstract

The largest global source of secondary organic aerosol (SOA) in the atmosphere is derived from the oxidation of biogenic emissions. Plant stressors associated with a changing environment can alter both the quantity and composition of the compounds that are emitted. Alterations to the biogenic volatile organic compound (BVOC) profile could impact the characteristics of the SOA formed from those emissions. This study investigated the impacts of one global change stressor, increased herbivory, on the composition of SOA derived from real plant emissions. Herbivory was simulated via application of methyl jasmonate (MeJA), a proxy compound. Experiments were repeated under pre- and post-treatment conditions for six different coniferous plant types. Volatile organic compounds (VOCs) emitted from the plants were oxidized to form SOA via dark ozone-initiated chemistry. The SOA chemical composition was measured using a Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-AMS). The aerosol mass spectra of pre-treatment biogenic SOA from all plant types tended to be similar with correlations usually greater than or equal to 0.90. The presence of a stressor produced characteristic differences in the SOA mass spectra. Specifically, the following m/z were identified as a possible biogenic stress AMS marker with the corresponding HR ion(s) shown in parentheses: m/zmore » 31 (CH 3O +), m/z 58 (C 2H 2O 2 +, C 3H 6O +), m/z 29 (C 2H 5 +), m/z 57 (C 3H 5O +), m/z 59 (C 2H 3O 2 +, C 3H 7O +), m/z 71 (C 3H 3O 2 +, C 4H 7O +), and m/z 83 (C 5H 7O +). The first aerosol mass spectrum of SOA generated from the oxidation of the plant stress hormone, MeJA, is also presented. Elemental analysis results demonstrated an O : C range of baseline biogenic SOA between 0.3 and 0.47. The O : C of standard MeJA SOA was 0.52. Furthermore the results presented here could be used to help identify a biogenic plant stress marker in ambient data sets collected in forest environments.« less

Authors:
ORCiD logo [1];  [2]; ORCiD logo [2]
  1. Washington State Univ., Pullman, WA (United States); Univ. of Eastern Finland, Kuopio (Finland)
  2. Washington State Univ., Pullman, WA (United States)
Publication Date:
Research Org.:
Washington State Univ., Pullman, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1228144
Alternate Identifier(s):
OSTI ID: 1353456
Grant/Contract Number:  
SC0003899
Resource Type:
Journal Article: Published Article
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Name: Atmospheric Chemistry and Physics (Online); Journal Volume: 15; Journal Issue: 7; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Faiola, C. L., Wen, M., and VanReken, T. M. Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: Inter- and intra-species variability for six coniferous species. United States: N. p., 2015. Web. doi:10.5194/acp-15-3629-2015.
Faiola, C. L., Wen, M., & VanReken, T. M. Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: Inter- and intra-species variability for six coniferous species. United States. doi:10.5194/acp-15-3629-2015.
Faiola, C. L., Wen, M., and VanReken, T. M. Wed . "Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: Inter- and intra-species variability for six coniferous species". United States. doi:10.5194/acp-15-3629-2015.
@article{osti_1228144,
title = {Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: Inter- and intra-species variability for six coniferous species},
author = {Faiola, C. L. and Wen, M. and VanReken, T. M.},
abstractNote = {The largest global source of secondary organic aerosol (SOA) in the atmosphere is derived from the oxidation of biogenic emissions. Plant stressors associated with a changing environment can alter both the quantity and composition of the compounds that are emitted. Alterations to the biogenic volatile organic compound (BVOC) profile could impact the characteristics of the SOA formed from those emissions. This study investigated the impacts of one global change stressor, increased herbivory, on the composition of SOA derived from real plant emissions. Herbivory was simulated via application of methyl jasmonate (MeJA), a proxy compound. Experiments were repeated under pre- and post-treatment conditions for six different coniferous plant types. Volatile organic compounds (VOCs) emitted from the plants were oxidized to form SOA via dark ozone-initiated chemistry. The SOA chemical composition was measured using a Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-AMS). The aerosol mass spectra of pre-treatment biogenic SOA from all plant types tended to be similar with correlations usually greater than or equal to 0.90. The presence of a stressor produced characteristic differences in the SOA mass spectra. Specifically, the following m/z were identified as a possible biogenic stress AMS marker with the corresponding HR ion(s) shown in parentheses: m/z 31 (CH3O+), m/z 58 (C2H2O2+, C3H6O+), m/z 29 (C2H5+), m/z 57 (C3H5O+), m/z 59 (C2H3O2+, C3H7O+), m/z 71 (C3H3O2+, C4H7O+), and m/z 83 (C5H7O+). The first aerosol mass spectrum of SOA generated from the oxidation of the plant stress hormone, MeJA, is also presented. Elemental analysis results demonstrated an O : C range of baseline biogenic SOA between 0.3 and 0.47. The O : C of standard MeJA SOA was 0.52. Furthermore the results presented here could be used to help identify a biogenic plant stress marker in ambient data sets collected in forest environments.},
doi = {10.5194/acp-15-3629-2015},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 7,
volume = 15,
place = {United States},
year = {Wed Apr 01 00:00:00 EDT 2015},
month = {Wed Apr 01 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.5194/acp-15-3629-2015

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Cited by: 4 works
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