Effects of NO2 on oxidation mechanisms of atmospheric pollutant SO2 over Baumberger sandstone
Effects of NO2 on oxidation mechanisms of atmospheric pollutant SO2 over Baumberger sandstone
复制标题
DOI：
10.1016/j.buildenv.2005.02.007
复制
发表时间：
2006-04
影响因子：
7.4
通讯作者：
Y. Bai;G. Thompson;S. Martínez-Ramírez
中科院分区：
文献类型：
--
作者：
Y. Bai;G. Thompson;S. Martínez-Ramírez
通过Baumberger砂岩降解实验，研究了NO2对大气污染气体SO2氧化的影响。实验在一组实验室大气室中进行。通过暴露的石头标本的各种污染物制度，如单一和组合的污染气体（二氧化硫，二氧化氮），反应产物（即亚硝酸盐，硝酸盐，亚硫酸盐和硫酸盐）收集的径流溶液，以及从石头提取进行了分析。用mg/cm ~ 2s表示的污染气体呈现率来评价SO_2和NO_2污染气体与Baumberger砂岩的相互作用。第一次，NO2的SO2氧化的样品表面上的贡献已被量化（例如37%，在干燥的表面条件和9%，在湿表面条件）。在有NO2存在的情况下，Baumberger砂岩上的SO2氧化在样品表面产生硝酸盐;然而，当没有砂岩存在时，不产生NO2氧化。
The influence of NO2on oxidation of atmospheric pollutant gas SO2has been studied through Baumberger sandstone degradation. Experiments were conducted in a set of laboratory atmospheric chambers. By exposure of stone specimens to various pollutant regimes; e.g. single and combined pollutant gases (SO2, NO2), the reaction products (i.e. nitrite, nitrate, sulphite and sulphate) collected from run-off solutions as well as extracted from stones were analysed. Presentation rates of pollutant gases in terms of mg/cm2s have been used to assess the interaction of SO2and NO2pollutant gases with Baumberger sandstone. For the first time, the contribution of NO2to SO2oxidation over the sample surface has been quantified (e.g. 37% in dry surface condition and 9% in wet surface condition). SO2oxidation over Baumberger sandstone in the presence of NO2produces nitrates over the surface of the sample; however, when no sandstone is present no NO2oxidation is produced.