Elucidating secondary organic aerosol from diesel and gasoline vehicles through detailed characterization of organic carbon emissions

被引：378

作者：

Gentner, Drew R. ^{[1
]}

Isaacman, Gabriel ^{[2
]}

Worton, David R. ^{[2
,3
]}

Chan, Arthur W. H. ^{[2
]}

Dallmann, Timothy R. ^{[1
]}

Davis, Laura ^{[1
]}

Liu, Shang ^{[4
]}

Day, Douglas A. ^{[4
]}

Russell, Lynn M. ^{[4
]}

Wilson, Kevin R. ^{[5
]}

Weber, Robin ^{[2
]}

Guha, Abhinav ^{[2
]}

Harley, Robert A. ^{[1
]}

Goldstein, Allen H. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA

[3] Aerosol Dynam, Berkeley, CA 94710 USA

[4] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2012年 / 109卷 / 45期

基金：

美国海洋和大气管理局;

关键词：

motor vehicle emission factors; photochemical oxidation; urban air quality; volatile organic compound emissions; petroleum fuel composition; SEMIVOLATILE; EVOLUTION; IMPACT;

D O I：

10.1073/pnas.1212272109

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Emissions from gasoline and diesel vehicles are predominant anthropogenic sources of reactive gas-phase organic carbon and key precursors to secondary organic aerosol (SOA) in urban areas. Their relative importance for aerosol formation is a controversial issue with implications for air quality control policy and public health. We characterize the chemical composition, mass distribution, and organic aerosol formation potential of emissions from gasoline and diesel vehicles, and find diesel exhaust is seven times more efficient at forming aerosol than gasoline exhaust. However, both sources are important for air quality; depending on a region's fuel use, diesel is responsible for 65% to 90% of vehicular-derived SOA, with substantial contributions from aromatic and aliphatic hydrocarbons. Including these insights on source characterization and SOA formation will improve regional pollution control policies, fuel regulations, and methodologies for future measurement, laboratory, and modeling studies.

引用

页码：18318 / 18323

页数：6

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