Intrinsic Chemical Drivers of Organic Aerosol Volatility: From Experimental Insights to Model Predictions
文献类型：期刊论文
| 作者 | Jiang, Bin3; Zhao, Shizhen2,3,4; Chen, Wei1,3; Tian, Lele1,3; Hu, Weiwei2,3,4 ; Li, Jun2,3,4; Zhang, Gan2,3,4
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2024-11-16 |
| 卷号 | 129期号:21页码:13 |
| 关键词 | volatility FT-ICR MS double bond equivalents molecular compositions phase distributions |
| ISSN号 | 2169-897X |
| DOI | 10.1029/2024JD041286 |
| 英文摘要 | Accurately predicting the volatilities of molecules in aerosols is challenging but crucial for understanding the atmospheric effects of aerosols. We used negative and positive ion electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS) to identify differences in the molecular compositions of gas and particle phase samples from urban atmosphere. We aimed to identify intrinsic chemical parameters that determine and predict the organic aerosol volatility. We found higher average molecular weights, carbon mass percentages, and double bond equivalents (DBE) but lower average O/C ratios and oxygen mass percentages in the particle phase than the gas phase. We identified DBE, which display a significant negative correlation with volatility, as a key parameter. We proposed to improve the previous model for predicting organic aerosol volatility by incorporating DBE as a new variant; and the result showed that this subsequently improved the accuracy of the model, particularly for compounds with minimal or no heteroatoms (0-2) such as hydrocarbons (CH). The revised model offers insights into the contributions of DBE, carbon, nitrogen, oxygen, and sulfur atoms to the volatilities of diverse organic molecules in aerosols and could be applied to improve our understanding of the phase distributions of volatile organic compounds in the ambient air. |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001368113000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81941]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zhao, Shizhen |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangzhou, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 4.Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Bin,Zhao, Shizhen,Chen, Wei,et al. Intrinsic Chemical Drivers of Organic Aerosol Volatility: From Experimental Insights to Model Predictions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2024,129(21):13. |
| APA | Jiang, Bin.,Zhao, Shizhen.,Chen, Wei.,Tian, Lele.,Hu, Weiwei.,...&Zhang, Gan.(2024).Intrinsic Chemical Drivers of Organic Aerosol Volatility: From Experimental Insights to Model Predictions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,129(21),13. |
| MLA | Jiang, Bin,et al."Intrinsic Chemical Drivers of Organic Aerosol Volatility: From Experimental Insights to Model Predictions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 129.21(2024):13. |
入库方式： OAI收割
来源：广州地球化学研究所
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