Low-NO-like Oxidation Pathway Makes a Significant Contribution to Secondary Organic Aerosol in Polluted Urban Air
文献类型：期刊论文
| 作者 | Ye, Chenshuo5,6; Liu, Ying6; Yuan, Bin4; Wang, Zelong4; Lin, Yi4; Hu, Weiwei3 ; Chen, Wei3; Li, Tiange4; Song, Wei3; Wang, Xinming3
|
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2023 |
| 卷号 | 57期号:37页码:13912-13924 |
| 关键词 | CHEMICAL-IONIZATION GAS-PHASE PARTICULATE MATTER ALPHA-PINENE MASS-SPECTROMETRY LIQUID WATER TOF-MS PRODUCTS NITRATE EMISSIONS |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.3c01055 |
| 英文摘要 | Anthropogenic pollutants can greatly mediate formation pathways and chemical compositions of secondary organic aerosol (SOA) in urban atmospheres. We investigated the molecular tracers for different types of SOA in PM2.5 under varying NO/NO2 conditions in Guangzhou using source analysis of particle-phase speciated organics obtained from an iodide chemical ionization mass spectrometer with a Filter Inlet for Gases and AEROsols (FIGAERO-I-CIMS). Results show that low-NO-like pathways (when NO/NO2 4-C6 non-nitrogenous compounds over ozone accumulation. Daytime high-NO chemistry played larger roles (38%) in local pollution episodes, with organic nitrates (ONs) and nitrophenols increasing with enhanced aerosol water content and nitrate fraction. Nighttime NO3-initiated oxidation, characterized by monoterpene-derived ONs, accounted for comparable percentages (10-12%) of FIGAERO-OA for both two periods. Furthermore, the presence of organosulfates (OSs) improves the understanding of the roles of aqueous-phase processes in SOA production. Carbonyl-derived OSs exhibited a preferential formation under conditions of high aerosol acidity and/or abundant sulfate, which correlated well with low-NO-like SOA. Our results demonstrate the importance of NO/NO2 ratios in controlling SOA compositions, as well as interactions between water content, aerosol acidity, and inorganic salts in gas-to-particle partitioning of condensable organics. ? 2023 American Chemical Society. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001062618300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80275]  |
| 专题 | 有机地球化学国家重点实验室 |
| 作者单位 | 1.Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong; 999077, Hong Kong 2.Guangdong?Hongkong?Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong; 999077, Hong Kong 3.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China 4.Institute for Environmental and Climate Research, Jinan University, Guangzhou; 511443, China 5.Guangdong Provincial Academy of Environmental Science, Guangzhou; 510045, China 6.State Key Joint Laboratory of Environmental Simulation and Pollution Control (SKL-ESPC), College of Environmental Sciences and Engineering, Peking University, Beijing; 100871, China |
| 推荐引用方式 GB/T 7714 | Ye, Chenshuo,Liu, Ying,Yuan, Bin,et al. Low-NO-like Oxidation Pathway Makes a Significant Contribution to Secondary Organic Aerosol in Polluted Urban Air[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(37):13912-13924. |
| APA | Ye, Chenshuo.,Liu, Ying.,Yuan, Bin.,Wang, Zelong.,Lin, Yi.,...&Shao, Min.(2023).Low-NO-like Oxidation Pathway Makes a Significant Contribution to Secondary Organic Aerosol in Polluted Urban Air.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(37),13912-13924. |
| MLA | Ye, Chenshuo,et al."Low-NO-like Oxidation Pathway Makes a Significant Contribution to Secondary Organic Aerosol in Polluted Urban Air".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.37(2023):13912-13924. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。