<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Shilling, J. E.</style></author><author><style face="normal" font="default" size="100%">Q. Chen</style></author><author><style face="normal" font="default" size="100%">King, S. M.</style></author><author><style face="normal" font="default" size="100%">Rosenoern, T.</style></author><author><style face="normal" font="default" size="100%">Kroll, J. H.</style></author><author><style face="normal" font="default" size="100%">Worsnop, D. R.</style></author><author><style face="normal" font="default" size="100%">McKinney, K. A.</style></author><author><style face="normal" font="default" size="100%">Martin, S. T.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Particle mass yield in secondary organic aerosol formed by the dark ozonolysis of a-pinene</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Chemistry and Physics</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Atmos. Chem. Phys.</style></alt-title><short-title><style face="normal" font="default" size="100%">Atmos. Chem. Phys.Atmos. Chem. Phys.</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">absorption-model</style></keyword><keyword><style  face="normal" font="default" size="100%">air-pollution</style></keyword><keyword><style  face="normal" font="default" size="100%">atmospheric chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">biogenic hydrocarbons</style></keyword><keyword><style  face="normal" font="default" size="100%">heterogeneous reactions</style></keyword><keyword><style  face="normal" font="default" size="100%">oxidation</style></keyword><keyword><style  face="normal" font="default" size="100%">particulate matter</style></keyword><keyword><style  face="normal" font="default" size="100%">phase reactions</style></keyword><keyword><style  face="normal" font="default" size="100%">submicron particles</style></keyword><keyword><style  face="normal" font="default" size="100%">terpene ozonolysis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><number><style face="normal" font="default" size="100%">7</style></number><volume><style face="normal" font="default" size="100%">8</style></volume><pages><style face="normal" font="default" size="100%">2073-2088</style></pages><isbn><style face="normal" font="default" size="100%">1680-7316</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The yield of particle mass in secondary organic aerosol (SOA) formed by dark ozonolysis was measured for 0.3-22.8 ppbv of reacted alpha-pinene. Most experiments were conducted using a continuous- flow chamber, allowing nearly constant SOA concentration and chemical composition for several days. For comparison, some experiments were also conducted in batch mode. Reaction conditions were 25 degrees C, 40% RH, dry (NH4) SO4 seed particles, and excess 1-butanol. The organic particle loading was independently measured by an aerosol mass spectrometer and a scanning mobility particle sizer, and the two measurements agreed well. The observations showed that SOA formation occurred for even the lowest reacted alpha-pinene concentration of 0.3 ppbv. The particle mass yield was 0.09 at 0.15 mu gm(-3), increasing to 0.27 at 40 mu gm(-3). Compared to some results reported in the literature, the yields were 80 to 100% larger for loadings above 2 mu gm(-3). At lower loadings, the yields had an offset of approximately + 0.07 from those reported in the literature. To as low as 0.15 mu g m(-3), the yield curve had no inflection point toward null yield, implying the formation of one or several products having vapor pressures below this value. These observations of increased yields, especially for low loadings, are potentially important for accurate prediction by chemical transport models of organic particle concentrations in the ambient atmosphere.</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">ISI:000254960800014</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;ISI Document Delivery No.: 288BITimes Cited: 20Cited Reference Count: 72Shilling, J. E. Chen, Q. King, S. M. Rosenoern, T. Kroll, J. H. Worsnop, D. R. McKinney, K. A. Martin, S. T.Copernicus publicationsKathlenburg-lindau&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">[Shilling, J. E.; Chen, Q.; King, S. M.; Rosenoern, T.; Martin, S. T.] Harvard Univ, Sch Engn &amp;amp; Appl Sci, Cambridge, MA 02138 USA. [Kroll, J. H.; Worsnop, D. R.] Aerodyne Res Inc, Billerica, MA 01821 USA. [McKinney, K. A.] Amherst Coll, Dept Chem, Amherst, MA 01002 USA. [Martin, S. T.] Harvard Univ, Dept Earth &amp;amp; Planetary Sci, Cambridge, MA 02138 USA.Martin, ST, Harvard Univ, Sch Engn &amp;amp; Appl Sci, Cambridge, MA 02138 USA.scot_martin@harvard.edu</style></auth-address></record></records></xml>