<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jakober, C.A.</style></author><author><style face="normal" font="default" size="100%">Robert, M.A.</style></author><author><style face="normal" font="default" size="100%">Riddle, S.G.</style></author><author><style face="normal" font="default" size="100%">Hugo Destaillats</style></author><author><style face="normal" font="default" size="100%">Charles, M.J.</style></author><author><style face="normal" font="default" size="100%">Green, P.G.</style></author><author><style face="normal" font="default" size="100%">Kleeman, M.J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Carbonyl Emissions from Gasoline and Diesel Motor Vehicles</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science and Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://eetd.lbl.gov/sites/all/files/publications/lbnl-752e.pdf</style></url></related-urls></urls><number><style face="normal" font="default" size="100%">13</style></number><volume><style face="normal" font="default" size="100%">42</style></volume><pages><style face="normal" font="default" size="100%">4697-4703</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Carbonyls from gasoline powered light-duty vehicles (LDVs) and heavy-duty diesel powered vehicles (HDDVs) operated on chassis dynamometers were measured using an annular denuder-quartz filter-polyurethane foam sampler with -(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 _C8 compounds. Gas- and particle-phase emissions for 39 aliphatic and 20 aromatic carbonyls ranged from 0.1 ? 2000 ?g/L fuel for LDVs and 1.8 -  27000 mu g/L fuel for HDDVs. Gas-phase species accounted for 81-95% of the total carbonyls from LDVs and 86-88% from HDDVs. Particulate carbonyls emitted from a HDDV under realistic driving conditions were similar to concentrations measured in a diesel particulate matter (PM) standard reference material. Carbonyls accounted for 19% of particulate organic carbon (POC) emissions from low-emission LDVs and 37% of POC emissions from three-way catalyst equipped LDVs. This identifies carbonyls as one of the largest classes of compounds in LDV PM emissions. The carbonyl fraction of HDDV POC was lower, 3.3-3.9% depending upon operational conditions. Partitioning analysis indicates the carbonyls had not achieved equilibrium between the gas- and particle-phase under the dilution factors of 126-584 used in the current study.&lt;/p&gt;</style></abstract><custom1><style face="normal" font="default" size="100%">&lt;p&gt;7.1&lt;/p&gt;</style></custom1><section><style face="normal" font="default" size="100%">Chapter</style></section></record></records></xml>