Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR
Organic aerosols (OA) are universally regarded as an important component of the atmosphere that have far-ranging impacts on climate forcing and human health. Many of these impacts are related to OA molecular characteristics. Despite the acknowledged importance, current uncertainties related to the s...
Published in: | Atmosphere |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
ODU Digital Commons
2016
|
Subjects: | |
Online Access: | https://digitalcommons.odu.edu/chemistry_fac_pubs/38 https://doi.org/10.3390/atmos7060079 https://digitalcommons.odu.edu/context/chemistry_fac_pubs/article/1025/viewcontent/Willoughby_2016_Detailed_Source_Spec.pdf |
id |
ftolddominionuni:oai:digitalcommons.odu.edu:chemistry_fac_pubs-1025 |
---|---|
record_format |
openpolar |
spelling |
ftolddominionuni:oai:digitalcommons.odu.edu:chemistry_fac_pubs-1025 2024-09-15T18:23:51+00:00 Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR Willoughby, Amanda S. Wozniak, Andrew S. Hatcher, Patrick G. 2016-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/chemistry_fac_pubs/38 https://doi.org/10.3390/atmos7060079 https://digitalcommons.odu.edu/context/chemistry_fac_pubs/article/1025/viewcontent/Willoughby_2016_Detailed_Source_Spec.pdf unknown ODU Digital Commons https://digitalcommons.odu.edu/chemistry_fac_pubs/38 doi:10.3390/atmos7060079 https://digitalcommons.odu.edu/context/chemistry_fac_pubs/article/1025/viewcontent/Willoughby_2016_Detailed_Source_Spec.pdf Chemistry & Biochemistry Faculty Publications Organic aerosols Molecular characterization UHR-MS NMR Principal Component analysis Biomass burning aerosols Urban aerosols Marine Aerosols Aerosol source apportionment Magnetic resonance spectroscopy North atlantic ocean Atmospheric Black carbon Chemical characterization Organosulfate Formation Tropospheric aerosols Optical properties Oxidation state Coastal storms Atmospheric Sciences Chemistry article 2016 ftolddominionuni https://doi.org/10.3390/atmos7060079 2024-08-12T03:29:34Z Organic aerosols (OA) are universally regarded as an important component of the atmosphere that have far-ranging impacts on climate forcing and human health. Many of these impacts are related to OA molecular characteristics. Despite the acknowledged importance, current uncertainties related to the source apportionment of molecular properties and environmental impacts make it difficult to confidently predict the net impacts of OA. Here we evaluate the specific molecular compounds as well as bulk structural properties of total suspended particulates in ambient OA collected from key emission sources (marine, biomass burning, and urban) using ultrahigh resolution mass spectrometry (UHR-MS) and proton nuclear magnetic resonance spectroscopy (1H NMR). UHR-MS and 1H NMR show that OA within each source is structurally diverse, and the molecular characteristics are described in detail. Principal component analysis (PCA) revealed that (1) aromatic nitrogen species are distinguishing components for these biomass burning aerosols; (2) these urban aerosols are distinguished by having formulas with high O/C ratios and lesser aromatic and condensed aromatic formulas; and (3) these marine aerosols are distinguished by lipid-like compounds of likely marine biological origin. This study provides a unique qualitative approach for enhancing the chemical characterization of OA necessary for molecular source apportionment. Article in Journal/Newspaper North Atlantic Old Dominion University: ODU Digital Commons Atmosphere 7 6 79 |
institution |
Open Polar |
collection |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
Organic aerosols Molecular characterization UHR-MS NMR Principal Component analysis Biomass burning aerosols Urban aerosols Marine Aerosols Aerosol source apportionment Magnetic resonance spectroscopy North atlantic ocean Atmospheric Black carbon Chemical characterization Organosulfate Formation Tropospheric aerosols Optical properties Oxidation state Coastal storms Atmospheric Sciences Chemistry |
spellingShingle |
Organic aerosols Molecular characterization UHR-MS NMR Principal Component analysis Biomass burning aerosols Urban aerosols Marine Aerosols Aerosol source apportionment Magnetic resonance spectroscopy North atlantic ocean Atmospheric Black carbon Chemical characterization Organosulfate Formation Tropospheric aerosols Optical properties Oxidation state Coastal storms Atmospheric Sciences Chemistry Willoughby, Amanda S. Wozniak, Andrew S. Hatcher, Patrick G. Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR |
topic_facet |
Organic aerosols Molecular characterization UHR-MS NMR Principal Component analysis Biomass burning aerosols Urban aerosols Marine Aerosols Aerosol source apportionment Magnetic resonance spectroscopy North atlantic ocean Atmospheric Black carbon Chemical characterization Organosulfate Formation Tropospheric aerosols Optical properties Oxidation state Coastal storms Atmospheric Sciences Chemistry |
description |
Organic aerosols (OA) are universally regarded as an important component of the atmosphere that have far-ranging impacts on climate forcing and human health. Many of these impacts are related to OA molecular characteristics. Despite the acknowledged importance, current uncertainties related to the source apportionment of molecular properties and environmental impacts make it difficult to confidently predict the net impacts of OA. Here we evaluate the specific molecular compounds as well as bulk structural properties of total suspended particulates in ambient OA collected from key emission sources (marine, biomass burning, and urban) using ultrahigh resolution mass spectrometry (UHR-MS) and proton nuclear magnetic resonance spectroscopy (1H NMR). UHR-MS and 1H NMR show that OA within each source is structurally diverse, and the molecular characteristics are described in detail. Principal component analysis (PCA) revealed that (1) aromatic nitrogen species are distinguishing components for these biomass burning aerosols; (2) these urban aerosols are distinguished by having formulas with high O/C ratios and lesser aromatic and condensed aromatic formulas; and (3) these marine aerosols are distinguished by lipid-like compounds of likely marine biological origin. This study provides a unique qualitative approach for enhancing the chemical characterization of OA necessary for molecular source apportionment. |
format |
Article in Journal/Newspaper |
author |
Willoughby, Amanda S. Wozniak, Andrew S. Hatcher, Patrick G. |
author_facet |
Willoughby, Amanda S. Wozniak, Andrew S. Hatcher, Patrick G. |
author_sort |
Willoughby, Amanda S. |
title |
Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR |
title_short |
Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR |
title_full |
Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR |
title_fullStr |
Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR |
title_full_unstemmed |
Detailed Source-Specific Molecular Composition of Ambient Aerosol Organic Matter Using Ultrahigh Resolution Mass Spectrometry and H NMR |
title_sort |
detailed source-specific molecular composition of ambient aerosol organic matter using ultrahigh resolution mass spectrometry and h nmr |
publisher |
ODU Digital Commons |
publishDate |
2016 |
url |
https://digitalcommons.odu.edu/chemistry_fac_pubs/38 https://doi.org/10.3390/atmos7060079 https://digitalcommons.odu.edu/context/chemistry_fac_pubs/article/1025/viewcontent/Willoughby_2016_Detailed_Source_Spec.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Chemistry & Biochemistry Faculty Publications |
op_relation |
https://digitalcommons.odu.edu/chemistry_fac_pubs/38 doi:10.3390/atmos7060079 https://digitalcommons.odu.edu/context/chemistry_fac_pubs/article/1025/viewcontent/Willoughby_2016_Detailed_Source_Spec.pdf |
op_doi |
https://doi.org/10.3390/atmos7060079 |
container_title |
Atmosphere |
container_volume |
7 |
container_issue |
6 |
container_start_page |
79 |
_version_ |
1810464131375955968 |