Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry
Four hydroxynitrates (R(OH)R'ONO2) representative of atmospheric volatile organic compound (VOC) oxidation products were synthesized, nebulized and sampled into an Aerodyne High Resolution Time of Flight Aerosol Mass Spectrometer (HR-ToF-AMS). The resulting mass spectrum was used to evaluate ca...
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| Format: | Article |
| Language: | en_US |
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Copernicus Publications
2011
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| Online Access: | http://hdl.handle.net/1721.1/61629 https://orcid.org/0000-0002-6275-521X |
| _version_ | 1826195784612184064 |
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| author | Rollins, A. W. Fry, J. L. Hunter, James Kroll, Jesse Worsnop, D. R. Singaram, S. W. Cohen, R. C. |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Rollins, A. W. Fry, J. L. Hunter, James Kroll, Jesse Worsnop, D. R. Singaram, S. W. Cohen, R. C. |
| author_sort | Rollins, A. W. |
| collection | MIT |
| description | Four hydroxynitrates (R(OH)R'ONO2) representative of atmospheric volatile organic compound (VOC) oxidation products were synthesized, nebulized and sampled into an Aerodyne High Resolution Time of Flight Aerosol Mass Spectrometer (HR-ToF-AMS). The resulting mass spectrum was used to evaluate calibration factors for elemental analysis of organic nitrates by AMS, and to determine the distribution of nitrogen in the detected fragments in a search for an AMS signature of organic nitrates. We found that 30% of the detected nitrogen mass is in the NO+ and NO2+ fragments, 12% at NHx+ fragments, 5% at CxHyOzN+ fragments, and 53% at various CxHyN+ fragments. Elemental analysis indicated that nitrogen was detected with higher efficiency than carbon and hydrogen, but oxygen was detected with reduced efficiency compared to previously reported results for a suite of organics which did not include organic nitrates. The results are used to suggest the maximum corrections to ambient O:C and N:C ratios based on AMS measurements. |
| first_indexed | 2024-09-23T10:15:23Z |
| format | Article |
| id | mit-1721.1/61629 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:15:23Z |
| publishDate | 2011 |
| publisher | Copernicus Publications |
| record_format | dspace |
| spelling | mit-1721.1/616292022-09-30T19:57:39Z Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry Rollins, A. W. Fry, J. L. Hunter, James Kroll, Jesse Worsnop, D. R. Singaram, S. W. Cohen, R. C. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Kroll, Jesse Kroll, Jesse Four hydroxynitrates (R(OH)R'ONO2) representative of atmospheric volatile organic compound (VOC) oxidation products were synthesized, nebulized and sampled into an Aerodyne High Resolution Time of Flight Aerosol Mass Spectrometer (HR-ToF-AMS). The resulting mass spectrum was used to evaluate calibration factors for elemental analysis of organic nitrates by AMS, and to determine the distribution of nitrogen in the detected fragments in a search for an AMS signature of organic nitrates. We found that 30% of the detected nitrogen mass is in the NO+ and NO2+ fragments, 12% at NHx+ fragments, 5% at CxHyOzN+ fragments, and 53% at various CxHyN+ fragments. Elemental analysis indicated that nitrogen was detected with higher efficiency than carbon and hydrogen, but oxygen was detected with reduced efficiency compared to previously reported results for a suite of organics which did not include organic nitrates. The results are used to suggest the maximum corrections to ambient O:C and N:C ratios based on AMS measurements. National Science Foundation (U.S.) (Grant No. ATM-0639847) National Science Foundation (U.S.) (Grant No. ATM-0511829) 2011-03-08T14:30:11Z 2011-03-08T14:30:11Z 2010-02 2010-02 Article http://purl.org/eprint/type/JournalArticle 1867-1381 1867-8548 http://hdl.handle.net/1721.1/61629 Rollins, A. W., Fry, J. L., Hunter, J. F., Kroll, J. H., Worsnop, D. R., Singaram, S. W., and Cohen, R. C.: Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry, Atmos. Meas. Tech., 3, 301-310, doi:10.5194/amt-3-301-2010, 2010. https://orcid.org/0000-0002-6275-521X en_US http://dx.doi.org/10.5194/amt-3-301-2010 Atmospheric Measurement Techniques Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0 application/pdf Copernicus Publications Copernicus |
| spellingShingle | Rollins, A. W. Fry, J. L. Hunter, James Kroll, Jesse Worsnop, D. R. Singaram, S. W. Cohen, R. C. Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry |
| title | Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry |
| title_full | Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry |
| title_fullStr | Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry |
| title_full_unstemmed | Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry |
| title_short | Elemental analysis of aerosol organic nitrates with electron ionization high-resolution mass spectrometry |
| title_sort | elemental analysis of aerosol organic nitrates with electron ionization high resolution mass spectrometry |
| url | http://hdl.handle.net/1721.1/61629 https://orcid.org/0000-0002-6275-521X |
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