Comprehensive Study about the Photolysis of Nitrates on Mineral Oxides
文献类型：期刊论文
| 作者 | Ma, Qingxin; Zhong, Cheng; Ma, Jinzhu; Ye, Chunxiang; Zhao, Yaqi; Liu, Yuan; Zhang, Peng; Chen, Tianzeng; Liu, Chang; Chu, Biwu |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-07-06 |
| 卷号 | 55期号:13页码:8604-8612 |
| 关键词 | photolysis nitrate renoxification cation effect SO2 TiO2 |
| ISSN号 | 0013-936X |
| 英文摘要 | Nitrates formed on mineral dust through heterogeneous reactions in high NOx areas can undergo photolysis to regenerate NOx and potentially interfere in the photochemistry in the downwind low NOx areas. However, little is known about such renoxification processes. In this study, photolysis of various nitrates on different mineral oxides was comprehensively investigated in a flow reactor and in situ diffuse reflectance Fourier-transform infrared spectroscopy (in situ DRIFTS). TiO2 was found much more reactive than Al2O3 and SiO2 with both NO2 and HONO as the two major photolysis products. The yields of NO2 and HONO depend on the cation basicity of the nitrate salts or the acidity of particles. As such, NH4NO3 is much more productive than other nitrates like Fe(NO3)(3), Ca(NO3)(2), and KNO3. SO2 and water vapor promote the photodegradation by increasing the surface acidity due to the photoinduced formation of H2SO4/sulfate and H+, respectively. O-2 enables the photo-oxidation of NOx to regenerate nitrate and thus inhibits the NOx yield. Overall, our results demonstrated that the photolysis of nitrate can be accelerated under complex air pollution conditions, which are helpful for understanding the transformation of nitrate and the nitrogen cycle in the atmosphere. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46028]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Peking Univ, State Key Joint Lab Environm Simulat & Pollut Con, Beijing Innovat Ctr Engn Sci & Adv Technol, Ctr Enviro 2.Chinese Acad Meteorol Sci, China Meteorol Adm, State Key Lab Severe Weather, Beijing 100 3.Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Qingxin,Zhong, Cheng,Ma, Jinzhu,et al. Comprehensive Study about the Photolysis of Nitrates on Mineral Oxides[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(13):8604-8612. |
| APA | Ma, Qingxin.,Zhong, Cheng.,Ma, Jinzhu.,Ye, Chunxiang.,Zhao, Yaqi.,...&He, Hong.(2021).Comprehensive Study about the Photolysis of Nitrates on Mineral Oxides.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(13),8604-8612. |
| MLA | Ma, Qingxin,et al."Comprehensive Study about the Photolysis of Nitrates on Mineral Oxides".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.13(2021):8604-8612. |
入库方式： OAI收割
来源：生态环境研究中心
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