<?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%">L.B. Huang</style></author><author><style face="normal" font="default" size="100%">Y. Zhao</style></author><author><style face="normal" font="default" size="100%">H. Li</style></author><author><style face="normal" font="default" size="100%">Chen, Z. M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hydrogen peroxide maintains the heterogeneous reaction of sulfur dioxide on mineral dust proxy particles</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2016</style></year></dates><volume><style face="normal" font="default" size="100%">141</style></volume><pages><style face="normal" font="default" size="100%">552-559</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;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体; font-size: medium;&quot;&gt; &lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;&lt;span style=&quot;font-size: medium;&quot;&gt;The heterogeneous oxidation of sulfur dioxide (SO&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: rgb(0, 0, 0); font-size: medium;&quot;&gt;) on &lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;a&lt;/span&gt;&lt;span style=&quot;color: rgb(0, 0, 0);&quot;&gt;&lt;span style=&quot;font-size: medium;&quot;&gt;-Al&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: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;3&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; particles was investigated using a flow reactor coupled with a transmission-Fourier transform infrared (T-FTIR) spectrometer at different relative humidities (RH) in the absence or presence of hydrogen peroxide (H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;), with an emphasis on the saturation coverage of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; and the timescale on which the reaction reaches saturation. It is found that the saturation coverage of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; in the absence of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; increases with rising RH due to the hydrolysis of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; by surface adsorbed water. However, the reaction ultimately reaches saturation since the produced sulfite/bisulfite cannot be further converted to sulfate/bisulfate in the absence of oxidants. In addition, the presence of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; can significantly increase the saturation coverage of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; by efficiently oxidizing sulfite/bisulfite to sulfate/bisulfate. Under humid conditions, adsorbed water facilitates the hydrolysis of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; and mitigates the increase of surface acidity, which can inhibit the hydrolysis of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;. Hence, in the presence of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;, the saturation coverage of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; as well as the time of reaction reaching saturation increases with rising RH and the surface is not saturated on the timescale of the experiments (40 h) at 60% RH. Furthermore, the increase of saturation coverage of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; in the presence of H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; was observed on chemically inactive SiO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; particles, indicating that the hydrolysis of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; and subsequent oxidation by H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; likely occurs on other types of particles. Our findings are of importance for understanding the role of water vapor and trace gases (e.g., H&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;O&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2)&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; in the heterogeneous reaction of SO&lt;/span&gt;&lt;sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt; in the atmosphere.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-size: medium;&quot;&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体; font-size: medium;&quot;&gt; &lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span style=&quot;color: rgb(0, 0, 0); font-family: 宋体; font-size: medium;&quot;&gt; &lt;/span&gt;&lt;/p&gt;</style></abstract></record></records></xml>