@article{
 title = {Gas- and particle-phase primary emissions from in-use, on-road gasoline and diesel vehicles},
 type = {article},
 year = {2014},
 identifiers = {[object Object]},
 keywords = {Primary emissions Light-duty gasoline vehicles Hea},
 pages = {247-260},
 volume = {88},
 websites = {<Go to ISI>://WOS:000335104300028},
 city = {[May, Andrew A. Nguyen, Ngoc T. Presto, Albert A. Gordon, Timothy D. Lipsky, Eric M. Karve, Mrunmayi Robinson, Allen L.] Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA. [Lipsky, Eric M.] Penn State Greater Allegheny, Dept E},
 id = {db793d3a-b034-37b5-b4ae-bcc97071dd01},
 created = {2014-10-08T16:28:18.000Z},
 file_attached = {false},
 profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},
 group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},
 last_modified = {2017-03-14T17:32:24.802Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {May2014},
 source_type = {JOUR},
 language = {English},
 notes = {ISI Document Delivery No.: AG0KL<m:linebreak></m:linebreak>May, Andrew A. Nguyen, Ngoc T. Presto, Albert A. Gordon, Timothy D. Lipsky, Eric M. Karve, Mrunmayi Gutierrez, Alvaro Robertson, William H. Zhang, Mang Brandow, Christopher Chang, Oliver Chen, Shiyan Cicero-Fernandez, Pablo Dinkins, Lyman Fuentes, Mark Huang, Shiou-Mei Ling, Richard Long, Jeff Maddox, Christine Massetti, John McCauley, Eileen Miguel, Antonio Na, Kwangsam Ong, Richard Pang, Yanbo Rieger, Paul Sax, Todd Tin Truong Thu Vo Chattopadhyay, Sulekha Maldonado, Hector Maricq, M. Matti Robinson, Allen L.<m:linebreak></m:linebreak>US Environmental Protection Agency through STAR [RD834554]; Coordinating Research Council [A-74/E-96]<m:linebreak></m:linebreak>The authors would like to thank the excellent and dedicated personnel at the California Air Resources Board, especially at the Haagen-Smit and Heavy-Duty Engine Testing Laboratories. We would also like to acknowledge the contributions of Timothy Wallington of the Ford Motor Company, Rory MacArthur of the Chevron Corporation, Sherri Hunt of the United States Environmental Protection Agency, and the Coordinating Research Council Real World and Atmospheric Impacts Committees. We also thank David Campbell, Eric Fujita, and Darrell Sonntag for assistance with the Kansas City PM Characterization Study data. The California Air Resources Board provided substantial in-kind support for vehicle procurement, testing and emissions characterization. Carnegie Mellon University was supported by the US Environmental Protection Agency National Center for Environmental Research through the STAR program (Project RD834554) and the Coordinating Research Council (Project A-74/E-96). The views, opinions, and/or findings contained in this paper are those of the authors and should not be construed as an official position of the funding agencies. Finally, we would like to thank the anonymous reviewers for their thoughtful comments that greatly improved this paper.<m:linebreak></m:linebreak>Pergamon-elsevier science ltd<m:linebreak></m:linebreak>Oxford<m:linebreak></m:linebreak>Environmental Sciences; Meteorology &amp; Atmospheric Sciences},
 private_publication = {false},
 abstract = {Tailpipe emissions from sixty-four unique light-duty gasoline vehicles (LDGVs) spanning model years 1987-2012, two medium-duty diesel vehicles and three heavy-duty diesel vehicles with varying levels of aftertreatment were characterized at the California Air Resources Board Haagen-Smit and Heavy-Duty Engine Testing Laboratories. Each vehicle was tested on a chassis dynamometer using a constant volume sampler, commercial fuels and standard duty cycles. Measurements included regulated pollutants such as carbon monoxide (CO), total hydrocarbons (THC), nitrogen oxides (NOx), and particulate matter (PM). Off-line analyses were performed to speciate gas- and particle-phase emissions. The data were used to investigate trends in emissions with vehicle age and to quantify the effects of different aftertreatment technologies on diesel vehicle emissions (e.g., with and without a diesel particulate filter). On average, newer LDGVs that met the most recent emissions standards had substantially lower emissions of regulated gaseous pollutants (CO, THC and NOx) than older vehicles. For example, THC emissions from the median LDGV that met the LEV2 standard was roughly a factor of 10 lower than the median pre-LEV vehicle; there were also substantial reductions in NOx (factor of similar to 100) and CO (factor of similar to 10) emissions},
 bibtype = {article},
 author = {May, A A and Nguyen, N T and Presto, A A and Gordon, T D and Lipsky, E M and Karve, M and Gutierrez, A and Robertson, W H and Zhang, M and Brandow, C and Chang, O and Chen, S Y and Cicero-Fernandez, P and Dinkins, L and Fuentes, M and Huang, S M and Ling, R and Long, J and Maddox, C and Massetti, J and McCauley, E and Miguel, A and Na, K and Ong, R and Pang, Y B and Rieger, P and Sax, T and Truong, T and Vo, T and Chattopadhyay, S and Maldonado, H and Maricq, M M and Robinson, A L},
 journal = {Atmospheric Environment}
}

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Nguyen, Ngoc T. Presto, Albert A. Gordon, Timothy D. Lipsky, Eric M. Karve, Mrunmayi Robinson, Allen L.] Carnegie Mellon Univ, Ctr Atmospher Particle Studies, Pittsburgh, PA 15213 USA. [Lipsky, Eric M.] Penn State Greater Allegheny, Dept E","id":"db793d3a-b034-37b5-b4ae-bcc97071dd01","created":"2014-10-08T16:28:18.000Z","file_attached":false,"profile_id":"363623ef-1990-38f1-b354-f5cdaa6548b2","group_id":"02267cec-5558-3876-9cfc-78d056bad5b9","last_modified":"2017-03-14T17:32:24.802Z","read":false,"starred":false,"authored":false,"confirmed":"true","hidden":false,"citation_key":"May2014","source_type":"JOUR","language":"English","notes":"ISI Document Delivery No.: AG0KL<m:linebreak></m:linebreak>May, Andrew A. Nguyen, Ngoc T. Presto, Albert A. Gordon, Timothy D. Lipsky, Eric M. Karve, Mrunmayi Gutierrez, Alvaro Robertson, William H. Zhang, Mang Brandow, Christopher Chang, Oliver Chen, Shiyan Cicero-Fernandez, Pablo Dinkins, Lyman Fuentes, Mark Huang, Shiou-Mei Ling, Richard Long, Jeff Maddox, Christine Massetti, John McCauley, Eileen Miguel, Antonio Na, Kwangsam Ong, Richard Pang, Yanbo Rieger, Paul Sax, Todd Tin Truong Thu Vo Chattopadhyay, Sulekha Maldonado, Hector Maricq, M. Matti Robinson, Allen L.<m:linebreak></m:linebreak>US Environmental Protection Agency through STAR [RD834554]; Coordinating Research Council [A-74/E-96]<m:linebreak></m:linebreak>The authors would like to thank the excellent and dedicated personnel at the California Air Resources Board, especially at the Haagen-Smit and Heavy-Duty Engine Testing Laboratories. We would also like to acknowledge the contributions of Timothy Wallington of the Ford Motor Company, Rory MacArthur of the Chevron Corporation, Sherri Hunt of the United States Environmental Protection Agency, and the Coordinating Research Council Real World and Atmospheric Impacts Committees. We also thank David Campbell, Eric Fujita, and Darrell Sonntag for assistance with the Kansas City PM Characterization Study data. The California Air Resources Board provided substantial in-kind support for vehicle procurement, testing and emissions characterization. Carnegie Mellon University was supported by the US Environmental Protection Agency National Center for Environmental Research through the STAR program (Project RD834554) and the Coordinating Research Council (Project A-74/E-96). The views, opinions, and/or findings contained in this paper are those of the authors and should not be construed as an official position of the funding agencies. Finally, we would like to thank the anonymous reviewers for their thoughtful comments that greatly improved this paper.<m:linebreak></m:linebreak>Pergamon-elsevier science ltd<m:linebreak></m:linebreak>Oxford<m:linebreak></m:linebreak>Environmental Sciences; Meteorology &amp; Atmospheric Sciences","private_publication":false,"abstract":"Tailpipe emissions from sixty-four unique light-duty gasoline vehicles (LDGVs) spanning model years 1987-2012, two medium-duty diesel vehicles and three heavy-duty diesel vehicles with varying levels of aftertreatment were characterized at the California Air Resources Board Haagen-Smit and Heavy-Duty Engine Testing Laboratories. Each vehicle was tested on a chassis dynamometer using a constant volume sampler, commercial fuels and standard duty cycles. Measurements included regulated pollutants such as carbon monoxide (CO), total hydrocarbons (THC), nitrogen oxides (NOx), and particulate matter (PM). Off-line analyses were performed to speciate gas- and particle-phase emissions. The data were used to investigate trends in emissions with vehicle age and to quantify the effects of different aftertreatment technologies on diesel vehicle emissions (e.g., with and without a diesel particulate filter). On average, newer LDGVs that met the most recent emissions standards had substantially lower emissions of regulated gaseous pollutants (CO, THC and NOx) than older vehicles. 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Off-line analyses were performed to speciate gas- and particle-phase emissions. The data were used to investigate trends in emissions with vehicle age and to quantify the effects of different aftertreatment technologies on diesel vehicle emissions (e.g., with and without a diesel particulate filter). On average, newer LDGVs that met the most recent emissions standards had substantially lower emissions of regulated gaseous pollutants (CO, THC and NOx) than older vehicles. 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