<?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%">Mohamad Sleiman</style></author><author><style face="normal" font="default" size="100%">Hugo Destaillats</style></author><author><style face="normal" font="default" size="100%">Jared D. Smith</style></author><author><style face="normal" font="default" size="100%">Chen-Lin Liu</style></author><author><style face="normal" font="default" size="100%">Musahid Ahmed</style></author><author><style face="normal" font="default" size="100%">Kevin Wilson</style></author><author><style face="normal" font="default" size="100%">Lara A. Gundel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Secondary organic aerosol formation from ozone-initiated reactions with nicotine and secondhand tobacco smoke</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">indoor environment, heterogeneous chemistry, thirdhand smoke, ultrafine particles, aerosol mass spectrometry, indoor exposure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2010</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S1352231010005923</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">44</style></volume><pages><style face="normal" font="default" size="100%">4191-4198</style></pages><abstract><style face="normal" font="default" size="100%">&lt;&lt;p id=&quot;abspara0010&quot;&gt;We used controlled laboratory experiments to evaluate the  aerosol-forming potential of ozone reactions with nicotine and secondhand smoke.  Special attention was devoted to real-time monitoring of the particle size  distribution and chemical composition of SOA as they are believed to be key  factors determining the toxicity of SOA. The experimental approach was based on  using a vacuum ultraviolet photon ionization time-of-flight aerosol mass  spectrometer (VUV-AMS), a scanning mobility particle sizer (SMPS) and off-line  thermal desorption coupled to mass spectrometry (TD-GC-MS) for gas-phase  byproducts analysis. Results showed that exposure of SHS to ozone induced the  formation of ultrafine particles (&amp;lt;100 nm) that contained high molecular  weight nitrogenated species (&lt;em&gt;m&lt;/em&gt;/&lt;em&gt;z&lt;/em&gt; 400–500), which can be due to  accretion/acid–base reactions and formation of oligomers. In addition, nicotine  was found to contribute significantly (with yields 4–9%) to the formation of  secondary organic aerosol through reaction with ozone. The main constituents of  the resulting SOA were tentatively identified and a reaction mechanism was  proposed to elucidate their formation. These findings identify a new component  of thirdhand smoke that is associated with the formation of ultrafine particles  (UFP) through oxidative aging of secondhand smoke. The significance of this  chemistry for indoor exposure and health effects is highlighted.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">34</style></issue></record></records></xml>