<?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. Liang</style></author><author><style face="normal" font="default" size="100%">Chen, Z. M.</style></author><author><style face="normal" font="default" size="100%">D. Huang</style></author><author><style face="normal" font="default" size="100%">Y. Zhao</style></author><author><style face="normal" font="default" size="100%">Li, Z. Y.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Impacts of aerosols on the chemistry of atmospheric trace gases: a case study of peroxides and HO&lt;sub&gt;2&lt;/sub&gt; radicals</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Chemistry and Physics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">11259-11276</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p style=&quot;margin: 0cm 0cm 0pt;&quot;&gt;&lt;span style=&quot;font-family: 'Times New Roman','serif';&quot;&gt;&lt;span style=&quot;color: #000000;&quot;&gt;&lt;span style=&quot;font-size: medium;&quot;&gt;Field measurements of atmospheric peroxides were obtained during the summer on two consecutive years over urban Beijing, which highlighted the impacts of aerosols on the chemistry of peroxide compounds and hydroperoxyl radicals (HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;/span&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;). The major peroxides were determined to be hydrogen peroxide (H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;), methyl hydroperoxide (MHP), and peroxyacetic acid (PAA). A negative correlation was found between H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; and PAA in rainwater, providing evidence for a conversion between H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; and PAA in the aqueous phase. A standard gas phase chemistry model based on the NCAR Master Mechanism provided a good reproduction of the observed H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; profile on non-haze days but greatly overpredicted the H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; level on haze days. We attribute this overprediction to the reactive uptake of HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; by the aerosols, since there was greatly enhanced aerosol loading and aerosol liquid water content on haze days. The discrepancy between the observed and modeled H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; can be diminished by adding to the model a newly proposed transition metal ion catalytic mechanism of HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; in aqueous aerosols. This confirms the importance of the aerosol uptake of HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; and the subsequent aqueous phase reactions in the reduction of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;. The closure of HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; and H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; between the gas and aerosol phases suggests that the aerosols do not have a net reactive uptake of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;, because the conversion of HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; to H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; on aerosols compensates for the H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; loss. Laboratory studies for the aerosol uptake of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; in the presence of HO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; are urgently required to better understand the aerosol uptake of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: #000000; font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: #000000; font-size: medium;&quot;&gt; in the real atmosphere.&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">22</style></issue></record></records></xml>