Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign
Volatile organic compounds (VOCs) were measured by proton transfer reaction – mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mexico City as part of the Megacity Initiative – Local and Global Research Observations (MILAGRO) 2006...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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European Geosciences Union
2011
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| Online Access: | http://hdl.handle.net/1721.1/67724 https://orcid.org/0000-0002-3596-5334 |
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| author | Fortner, E. C. Zheng, J. Zhang, R. Knighton, W. Berk Molina, Luisa Tan André, M. Volkamer, R. A. Sheehy, P. M. |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Fortner, E. C. Zheng, J. Zhang, R. Knighton, W. Berk Molina, Luisa Tan André, M. Volkamer, R. A. Sheehy, P. M. |
| author_sort | Fortner, E. C. |
| collection | MIT |
| description | Volatile organic compounds (VOCs) were measured by proton transfer reaction – mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mexico City as part of the Megacity Initiative – Local and Global Research Observations (MILAGRO) 2006 field campaign. Thirty eight individual masses were monitored during the campaign and many species were quantified including methanol, acetaldehyde, toluene, the sum of C2 benzenes, the sum of C3 benzenes, acetone, isoprene, benzene, and ethyl acetate. The VOC measurements were analyzed to gain a better understanding of the type of VOCs present in the MCMA, their diurnal patterns, and their origins. Diurnal profiles of weekday and weekend/holiday aromatic VOC concentrations showed the influence of vehicular traffic during the morning rush hours and during the afternoon hours. Plumes including elevated toluene as high as 216 parts per billion (ppb) and ethyl acetate as high as 183 ppb were frequently observed during the late night and early morning hours, indicating the possibility of significant industrial sources of the two compounds in the region. Wind fields during those peak episodes revealed no specific direction for the majority of the toluene plumes but the ethyl acetate plumes arrived at the site when winds were from the Southwest or West. The PTR-MS measurements combined with other VOC measuring techniques at the field site as well as VOC measurements conducted in other areas of the Mexico City Metropolitan Area (MCMA) will help to develop a better understanding of the spatial pattern of VOCs and its variability in the MCMA.
Atmos. Chem. Phys., 9, 467–481, 2009. |
| first_indexed | 2024-09-23T12:31:44Z |
| format | Article |
| id | mit-1721.1/67724 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2025-03-10T10:36:57Z |
| publishDate | 2011 |
| publisher | European Geosciences Union |
| record_format | dspace |
| spelling | mit-1721.1/677242025-02-27T20:54:11Z Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign Fortner, E. C. Zheng, J. Zhang, R. Knighton, W. Berk Molina, Luisa Tan André, M. Volkamer, R. A. Sheehy, P. M. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Molina, Luisa Tan Molina, Luisa Tan Volkamer, R. M. Sheehy, P. Volatile organic compounds (VOCs) were measured by proton transfer reaction – mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mexico City as part of the Megacity Initiative – Local and Global Research Observations (MILAGRO) 2006 field campaign. Thirty eight individual masses were monitored during the campaign and many species were quantified including methanol, acetaldehyde, toluene, the sum of C2 benzenes, the sum of C3 benzenes, acetone, isoprene, benzene, and ethyl acetate. The VOC measurements were analyzed to gain a better understanding of the type of VOCs present in the MCMA, their diurnal patterns, and their origins. Diurnal profiles of weekday and weekend/holiday aromatic VOC concentrations showed the influence of vehicular traffic during the morning rush hours and during the afternoon hours. Plumes including elevated toluene as high as 216 parts per billion (ppb) and ethyl acetate as high as 183 ppb were frequently observed during the late night and early morning hours, indicating the possibility of significant industrial sources of the two compounds in the region. Wind fields during those peak episodes revealed no specific direction for the majority of the toluene plumes but the ethyl acetate plumes arrived at the site when winds were from the Southwest or West. The PTR-MS measurements combined with other VOC measuring techniques at the field site as well as VOC measurements conducted in other areas of the Mexico City Metropolitan Area (MCMA) will help to develop a better understanding of the spatial pattern of VOCs and its variability in the MCMA. Atmos. Chem. Phys., 9, 467–481, 2009. Robert A. Welch Foundation (Grant A-1417) Texas A & M University. Center for Atmospheric Chemistry and Environment National Science Foundation (U.S.) (ATM-0528227) 2011-12-19T18:34:00Z 2011-12-19T18:34:00Z 2009-01 Article http://purl.org/eprint/type/JournalArticle 1680-7324 1680-7316 http://hdl.handle.net/1721.1/67724 Fortner, E.C. et al. "Measurements of Volatile Organic Compounds Using Proton Transfer Reaction – Mass Spectrometry during the MILAGRO 2006 Campaign." Atmos. Chem. Phys., 9, 467-481 (2009). https://orcid.org/0000-0002-3596-5334 en_US Atmospheric Chemistry and Physics Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0 application/pdf European Geosciences Union Copernicus |
| spellingShingle | Fortner, E. C. Zheng, J. Zhang, R. Knighton, W. Berk Molina, Luisa Tan André, M. Volkamer, R. A. Sheehy, P. M. Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign |
| title | Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign |
| title_full | Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign |
| title_fullStr | Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign |
| title_full_unstemmed | Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign |
| title_short | Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign |
| title_sort | measurements of volatile organic compounds using proton transfer reaction mass spectrometry during the milagro 2006 campaign |
| url | http://hdl.handle.net/1721.1/67724 https://orcid.org/0000-0002-3596-5334 |
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