dc.contributor.author | Herndon, S. C. | |
dc.contributor.author | Jayne, John T. | |
dc.contributor.author | Worsnop, D. R. | |
dc.contributor.author | Miake-Lye, R. C. | |
dc.contributor.author | Cross, Eben Spencer | |
dc.contributor.author | Hunter, James | |
dc.contributor.author | Carrasquillo, Anthony Joseph | |
dc.contributor.author | Franklin, Jonathan Pfeil | |
dc.contributor.author | Kroll, Jesse | |
dc.date.accessioned | 2013-10-04T14:12:17Z | |
dc.date.available | 2013-10-04T14:12:17Z | |
dc.date.issued | 2013-08 | |
dc.date.submitted | 2013-07 | |
dc.identifier.issn | 1680-7324 | |
dc.identifier.issn | 1680-7316 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/81307 | |
dc.description.abstract | A detailed understanding of the climate and air quality impacts of aviation requires measurements of the emissions of intermediate-volatility and semi-volatile organic compounds (I/SVOCs) from aircraft. Currently both the amount and chemical composition of aircraft I/SVOC emissions remain poorly characterized. Here we characterize I/SVOC emissions from aircraft, using a novel instrument for the online, quantitative measurement of the mass loading and composition of low-volatility organic vapors. Emissions from the NASA DC8 aircraft were sampled on the ground 143 m downwind of the engines and characterized as a function of engine power from idle (4% maximum rated thrust) through 85% power. Results show that I/SVOC emissions are highest during engine idle operating conditions, with decreasing but non-zero I/SVOC emissions at higher engine powers. Comparison of I/SVOC emissions with total hydrocarbon (THC) measurements, VOC measurements, and an established emissions profile indicates that I/SVOCs comprise 10–20% of the total organic gas-phase emissions at idle, and an increasing fraction of the total gas-phase organic emissions at higher powers. Positive matrix factorization of online mass spectra is used to identify three distinct types of I/SVOC emissions: aliphatic, aromatic and oxygenated. The volatility and chemical composition of the emissions suggest that unburned fuel is the dominant source of I/SVOCs at idle, while pyrolysis products make up an increasing fraction of the I/SVOCs at higher powers. Oxygenated I/SVOC emissions were detected at lower engine powers (≤30%) and may be linked to cracked, partially oxidized or unburned fuel components. | en_US |
dc.description.sponsorship | United States. Dept. of Energy. Office of Science (Small Business Innovation Research Program Grant DE-SC0001666) | en_US |
dc.description.sponsorship | United States. Environmental Protection Agency (National Center for Environmental Research Grant RD834560) | en_US |
dc.language.iso | en_US | |
dc.publisher | Copernicus GmbH | en_US |
dc.relation.isversionof | http://dx.doi.org/10.5194/acp-13-7845-2013 | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/ | en_US |
dc.source | Copernicus GmbH | en_US |
dc.title | Online measurements of the emissions of intermediate-volatility and semi-volatile organic compounds from aircraft | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Cross, E. S., J. F. Hunter, A. J. Carrasquillo, J. P. Franklin, S. C. Herndon, J. T. Jayne, D. R. Worsnop, R. C. Miake-Lye, and J. H. Kroll. “Online measurements of the emissions of intermediate-volatility and semi-volatile organic compounds from aircraft.” Atmospheric Chemistry and Physics 13, no. 15 (August 14, 2013): 7845-7858. | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Chemical Engineering | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering | en_US |
dc.contributor.mitauthor | Cross, Eben Spencer | en_US |
dc.contributor.mitauthor | Hunter, James | en_US |
dc.contributor.mitauthor | Carrasquillo, Anthony Joseph | en_US |
dc.contributor.mitauthor | Franklin, Jonathan Pfeil | en_US |
dc.contributor.mitauthor | Kroll, Jesse | en_US |
dc.relation.journal | Atmospheric Chemistry and Physics | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | Cross, E. S.; Hunter, J. F.; Carrasquillo, A. J.; Franklin, J. P.; Herndon, S. C.; Jayne, J. T.; Worsnop, D. R.; Miake-Lye, R. C.; Kroll, J. H. | en_US |
dc.identifier.orcid | https://orcid.org/0000-0001-8097-9199 | |
dc.identifier.orcid | https://orcid.org/0000-0002-6275-521X | |
dc.identifier.orcid | https://orcid.org/0000-0002-9259-1869 | |
dc.identifier.orcid | https://orcid.org/0000-0001-8352-5854 | |
dspace.mitauthor.error | true | |
mit.license | PUBLISHER_CC | en_US |
mit.metadata.status | Complete | |