Particle acidity and sulfate production during severe haze events in China cannot be reliably inferred by assuming a mixture of inorganic salts
文献类型：期刊论文
| 作者 | Wang, Gehui1,12,13; Zhang, Fang9,10,11; Peng, Jianfei8,9,10; Duan, Lian7,9,10; Ji, Yuemeng6,9,10; Marrero-Ortiz, Wilmarie9,10; Wang, Jiayuan1; Li, Jianjun1; Wu, Can1; Cao, Cong1 |
| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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| 出版日期 | 2018-07-17 |
| 卷号 | 18期号:14页码:10123-10132 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-18-10123-2018 |
| 通讯作者 | Wang, Gehui(ghwang@geo.ecnu.edu.cn) ; Zhang, Renyi(renyi-zhang@tamu.edu) |
| 英文摘要 | Atmospheric measurements showed rapid sulfate formation during severe haze episodes in China, with fine particulate matter (PM) consisting of a multi-component mixture that is dominated by organic species. Several recent studies using the thermodynamic model estimated the particle acidity and sulfate production rate, by treating the PM exclusively as a mixture of inorganic salts dominated by ammonium sulfate and neglecting the effects of organic compounds. Noticeably, the estimated pH and sulfate formation rate during pollution periods in China were highly conflicting among the previous studies. Here we show that a particle mixture of inorganic salts adopted by the previous studies does not represent a suitable model system and that the acidity and sulfate formation cannot be reliably inferred without accounting for the effects of multi-aerosol compositions during severe haze events in China. Our laboratory experiments show that SO2 oxidation by NO2 with NH3 neutralization on fine aerosols is dependent on the particle hygroscopicity, phase-state, and acidity. Ammonium sulfate and oxalic acid seed particles exposed to vapors of SO2, NO2, and NH3 at high relative humidity (RH) exhibit distinct size growth and sulfate formation. Aqueous ammonium sulfate particles exhibit little sulfate production, in contrast to aqueous oxalic acid particles with significant sulfate production. Our field measurements demonstrate significant contribution of water-soluble organic matter to fine PM in China and indicate that the use of oxalic acid in laboratory experiments is representative of ambient organic dominant aerosols. While the particle acidity cannot be accurately determined from field measurements or calculated using the thermodynamic model, our results reveal that the pH value of ambient organics-dominated aerosols is sufficiently high to promote efficient SO2 oxidation by NO2 with NH3 neutralization under polluted conditions in China. |
| WOS关键词 | DICARBOXYLIC-ACIDS ; ATMOSPHERIC AEROSOLS ; INLAND CHINA ; HETEROGENEOUS REACTIONS ; FORMATION MECHANISMS ; SIZE DISTRIBUTION ; AMMONIUM-SULFATE ; OXALIC-ACID ; AMINES ; PHASE |
| 资助项目 | National Key R&D Plan (Quantitative Relationship and Regulation Principle between Regional Oxidation Capacity of Atmospheric and Air Quality)[2017YFC0210000] ; China National Natural Science Funds for Distinguished Young Scholars[41325014] ; National Nature Science Foundation of China[41773117] ; Robert A. Welch Foundation[A-1417] ; National Science Foundation Graduate Research Fellowship Program |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| WOS记录号 | WOS:000438945300001 |
| 资助机构 | National Key R&D Plan (Quantitative Relationship and Regulation Principle between Regional Oxidation Capacity of Atmospheric and Air Quality) ; China National Natural Science Funds for Distinguished Young Scholars ; National Nature Science Foundation of China ; Robert A. Welch Foundation ; National Science Foundation Graduate Research Fellowship Program |
| 源URL | [http://ir.ieecas.cn/handle/361006/13252]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Wang, Gehui; Zhang, Renyi |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 2.Jilin Jianzhu Univ, Key Lab Songliao Aquat Environm, Changchun 130118, Jilin, Peoples R China 3.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Jiangsu, Peoples R China 5.CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA 6.Guangdong Univ Technol, Sch Environm Sci & Engn, Inst Environm Hlth & Pollut, Control, Guangzhou 510006, Guangdong, Peoples R China 7.East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China 8.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China 9.Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA 10.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA |
| 推荐引用方式 GB/T 7714 | Wang, Gehui,Zhang, Fang,Peng, Jianfei,et al. Particle acidity and sulfate production during severe haze events in China cannot be reliably inferred by assuming a mixture of inorganic salts[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(14):10123-10132. |
| APA | Wang, Gehui.,Zhang, Fang.,Peng, Jianfei.,Duan, Lian.,Ji, Yuemeng.,...&Zhang, Renyi.(2018).Particle acidity and sulfate production during severe haze events in China cannot be reliably inferred by assuming a mixture of inorganic salts.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(14),10123-10132. |
| MLA | Wang, Gehui,et al."Particle acidity and sulfate production during severe haze events in China cannot be reliably inferred by assuming a mixture of inorganic salts".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.14(2018):10123-10132. |
入库方式： OAI收割
来源：地球环境研究所
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