Influence of ozone, relative humidity, and flow rate on the deposition and oxidation of sulfur dioxide on yellow sand
Influence of ozone, relative humidity, and flow rate on the deposition and oxidation of sulfur dioxide on yellow sand
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DOI：
10.1016/j.atmosenv.2004.05.060
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发表时间：
2004-12-01
影响因子：
5
通讯作者：
Sekiguchi, K
中科院分区：
文献类型：
--
作者：
Sakamoto, K;Takada, H;Sekiguchi, K
为研究O3-、相对湿度和流速对黄沙与SO2反应的影响，采用圆柱形流动反应器，通过暴露实验研究了黄沙与SO2反应过程中SO2的沉积速率和硫的氧化态。在反应早期，沉积速度不受RH或O-3的存在的影响;然而，随着反应的进行，沉积速度在O-3的存在下和高湿度下增加。在这些条件下，硫从S（IV）到S（VI）的氧化也得到增强。硫的氧化量与O-3的沉积量呈正相关。此外，SO2的沉积速度随着流量的增加而增加。然而，流速的变化对SO2氧化的量没有明显的影响。(C)2004爱思唯尔有限公司保留所有权利。
To evaluate the influences of O-3, relative humidity (RH), and flow rate on the reaction between yellow sand and SO2, the SO2 deposition velocity and the oxidation state of sulfur were investigated by means of exposure experiments in a cylindrical flow reactor. Early in the reaction, the deposition velocity was not influenced by the RH or the presence of O-3; as the reaction progressed, however, the deposition velocity increased in the presence of O-3 and at high humidity. The oxidation of sulfur from S(IV) to S(VI) was also enhanced under these conditions. The amount of sulfur oxidation was positively correlated with the amount of deposited O-3. Furthermore, the SO2 deposition velocity increased with increasing flow rate. However, changes in the flow rate had no noticeable effect on the amount Of SO2 oxidation. (C) 2004 Elsevier Ltd. All rights reserved.