<?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%">H.Q. Shen</style></author><author><style face="normal" font="default" size="100%">Chen, Z. M.</style></author><author><style face="normal" font="default" size="100%">H. Li</style></author><author><style face="normal" font="default" size="100%">X. Qian</style></author><author><style face="normal" font="default" size="100%">X. Qin</style></author><author><style face="normal" font="default" size="100%">W.X. Shi</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Gas-particle partitioning of carbonyl compounds in the ambient atmosphere</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science &amp; Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2018</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://pubs.acs.org/doi/10.1021/acs.est.8b01882</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">52</style></volume><pages><style face="normal" font="default" size="100%">10997−11006</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;span style=&quot;font-family: Times New Roman;&quot;&gt;Despite their&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt; crucial roles&lt;/span&gt; in health and climate concerns, the gas-particle partitioning of carbonyl compounds is poorly characterized in the ambient atmosphere. In this study, we &lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体;&quot;&gt;investigate&lt;/span&gt;&lt;span style=&quot;font-family: Times New Roman;&quot;&gt; their partitioning&lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体;&quot;&gt; &lt;/span&gt;&lt;span style=&quot;font-family: Times New Roman;&quot;&gt;by&lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体;&quot;&gt; &lt;/span&gt;&lt;span style=&quot;font-family: Times New Roman;&quot;&gt;simultaneously&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; &lt;/span&gt;measuring six &lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体;&quot;&gt;carbonyl compounds&lt;/span&gt;&lt;span style=&quot;font-family: Times New Roman;&quot;&gt; (formaldehyde, acetaldehyde, acetone, propionaldehyde, glyoxal, and methylglyoxal) in gas and particle phase&lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体;&quot;&gt; at an &lt;/span&gt;&lt;span style=&quot;font-family: Times New Roman;&quot;&gt;&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;urban site&lt;/span&gt; in Beijing.&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt; T&lt;/span&gt;he field-derived partitioning coefficients (K&lt;span style=&quot;font-size: small;&quot;&gt;&lt;sub&gt;p&lt;/sub&gt;&lt;sup&gt;f&lt;/sup&gt;&lt;/span&gt;) are in the range of 10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;−5&lt;/span&gt;&lt;/sup&gt;−10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;−3&lt;/span&gt;&lt;/sup&gt; m&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;3&lt;/span&gt;&lt;/sup&gt; µg&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;−1&lt;/span&gt;&lt;/sup&gt;, and corresponding effective Henry’s law coefficients (K&lt;span style=&quot;font-size: small;&quot;&gt;&lt;sub&gt;H&lt;/sub&gt;&lt;sup&gt;f&lt;/sup&gt;&lt;/span&gt;) should be&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt; &lt;/span&gt;10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;7&lt;/span&gt;&lt;/sup&gt;–10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;9&lt;/span&gt;&lt;/sup&gt; M atm&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;−1&lt;/span&gt;&lt;/sup&gt;. T&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;he Pankow’s absorptive partitioning theory and the Henry’s law both &lt;/span&gt;significantly underestimate concentrations of particle-phase carbonyl compounds (10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;5&lt;/span&gt;&lt;/sup&gt;–10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;6&lt;/span&gt;&lt;/sup&gt; times and &amp;gt;10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;3&lt;/span&gt;&lt;/sup&gt; times, respectively)&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;. &lt;/span&gt;The observed &lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;“salting in” effects&lt;/span&gt; only partially explain the enhanc&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;ed partitioning to particles, approximately one order of magnitude. The measured K&lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;&lt;span style=&quot;font-size: small;&quot;&gt;&lt;sub&gt;p&lt;/sub&gt;&lt;sup&gt;f&lt;/sup&gt;&lt;/span&gt;&lt;/span&gt; &lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;values are higher at low relative humidity and the &lt;/span&gt;overall effective vapor pressure of these carbonyl species&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt; are lower than their hydrates, indicating&lt;/span&gt; that carbonyl oligomers potentially formed in &lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;highly concentrated &lt;/span&gt;particle phase. The reaction kinetics of oligomer formation should be included if applying the Henry’s law to low-to-moderate &lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;RH and the high partitioning coefficients observed need further field and laboratory studies&lt;/span&gt;. These findings provide deeper insights into the formation of carbonyl secondary organic aerosols in the ambient atmosphere.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">19</style></issue></record></records></xml>