Deciphering the key drivers of oxidative potential during ammonium nitrate-mediated aqueous-phase photoreaction of methoxyphenols
文献类型：期刊论文
| 作者 | Lai, Racliffe Weng Seng2,3; Qiu, Tian4; Zhang, Xuyang4; Wang, Yalin4; Hao, Tianwei2,3,4; Ge, Xinlei1; Du, Lin5; Tang, Mingjin6 ; Hoi, Ka In4; Mok, Kai Meng2,3
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| 刊名 | ATMOSPHERIC ENVIRONMENT
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| 出版日期 | 2025 |
| 卷号 | 340页码:10 |
| 关键词 | Biomass burning Methoxyphenol Aqueous secondary organic aerosol DTT consumption Non-target screening analysis |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2024.120895 |
| 英文摘要 | Methoxyphenols are released in abundance from lignin pyrolysis during biomass burning. Apart from being atmospheric brown carbon components that absorb solar radiation and warm the climate, methoxyphenols also undergo photoreaction in the atmospheric aqueous phase and form secondary organic aerosols (aqSOA). While efforts have been devoted to understanding chemical evolutions and climate-related optical properties of aqSOA, their potential health impacts also require timely investigations. Herein, we used the dithiothreitol (DTT) assay to investigate oxidative potential of the aqSOA formed during the 8-h aqueous-phase photoreaction of two typical methoxyphenols, vanillin and vanillic acid, under pH 2 or 8, and with or without ammonia nitrate. The highest DTT consumption rates (RDTT) were observed for vanillin aqSOA formed in the presence of ammonia nitrate and at pH 8. At pH 2, although RDTT increased rapidly during early photoreaction, it reduced after prolonged illumination. High-resolution mass spectrometry and linear regression analyses were performed to correlate the photoreaction products with the observed RDTT. Results showed that three products that present quinone, lactone and dimer structures, respectively, should be the key drivers of elevated RDTT for aqSOA formed during photoreaction of vanillin and vanillic acid alone, whereas it shifted to the nitrogen-containing aromatic compounds during their photoreaction with ammonia nitrate. Our results have revealed the role of nitrogencontaining aromatic compounds in the oxidative potential and health effects of aqSOA from biomass burning, which was rarely recognized before and warrants immediate assessments. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001355303200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82106]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Li, Yong Jie |
| 作者单位 | 1.Nanjing Univ Informat Sci & Technol, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & Po, Nanjing, Peoples R China 2.Univ Macau, Fac Sci & Technol, Ctr Reg Oceans, Macau, Peoples R China 3.Univ Macau, Fac Sci & Technol, Dept Ocean Sci & Technol, Macau, Peoples R China 4.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Macau, Peoples R China 5.Shandong Univ, Sch Environm Sci & Engn, Qingdao Key Lab Prevent & Control Atmospher Pollut, Qingdao, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai, Racliffe Weng Seng,Qiu, Tian,Zhang, Xuyang,et al. Deciphering the key drivers of oxidative potential during ammonium nitrate-mediated aqueous-phase photoreaction of methoxyphenols[J]. ATMOSPHERIC ENVIRONMENT,2025,340:10. |
| APA | Lai, Racliffe Weng Seng.,Qiu, Tian.,Zhang, Xuyang.,Wang, Yalin.,Hao, Tianwei.,...&Li, Yong Jie.(2025).Deciphering the key drivers of oxidative potential during ammonium nitrate-mediated aqueous-phase photoreaction of methoxyphenols.ATMOSPHERIC ENVIRONMENT,340,10. |
| MLA | Lai, Racliffe Weng Seng,et al."Deciphering the key drivers of oxidative potential during ammonium nitrate-mediated aqueous-phase photoreaction of methoxyphenols".ATMOSPHERIC ENVIRONMENT 340(2025):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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