Environ. Sci. Technol. 2008, 42, 4697–4703
Carbonyl Emissions from Gasoline and Diesel Motor Vehicles C H R I S A . J A K O B E R , †,‡ MICHAEL A. ROBERT,§ S A R A H G . R I D D L E , |,⊥ H U G O D E S T A I L L A T S , †,# M . J U D I T H C H A R L E S , †,¶ PETER G. GREEN,§ AND M I C H A E L J . K L E E M A N * ,§ Departments of Environmental Toxicology, Civil and Environmental Engineering, and Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
Received December 7, 2007. Revised manuscript received April 3, 2008. Accepted April 4, 2008.
Carbonyls from gasoline-powered light-duty vehicles (LDVs) and heavy-duty diesel-powered vehicles (HDDVs) operated on chassis dynamometers were measured by use of an annular denuder-quartz filter-polyurethane foam sampler with O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine derivatization and chromatography-mass spectrometry analyses. Two internal standards were utilized based on carbonyl recovery: 4-fluorobenzaldehyde for
