Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-3659-2017 |
Volatility of mixed atmospheric humic-like substances and ammonium sulfate particles | |
Nie, Wei1,2,3,4,9; Hong, Juan4; Hame, Silja A. K.4; Ding, Aijun1,2,3,9; Li, Yugen5; Yan, Chao4; Hao, Liqing6; Mikkila, Jyri4; Zheng, Longfei1,2,3,9; Xie, Yuning1,2,3,9; Zhu, Caijun1,2,3,9; Xu, Zheng1,2,3,9; Chi, Xuguang1,2,3,9; Huang, Xin1,2,3,9; Zhou, Yang7,8; Lin, Peng7,10; Virtanen, Annele6; Worsnop, Douglas R.4; Kulmala, Markku4; Ehn, Mikael4; Yu, Jianzhen7; Kerminen, Veli-Matti4; Petaja, Tuukka1,4 | |
2017-03-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Finland; USA |
英文摘要 | The volatility of organic aerosols remains poorly understood due to the complexity of speciation and multiphase processes. In this study, we extracted humic-like substances (HULIS) from four atmospheric aerosol samples collected at the SORPES station in Nanjing, eastern China, and investigated the volatility behavior of particles at different sizes using a Volatility Tandem Differential Mobility Analyzer (VTDMA). In spite of the large differences in particle mass concentrations, the extracted HULIS from the four samples all revealed very high-oxidation states (O : C > 0.95), indicating secondary formation as the major source of HULIS in Yangtze River Delta (YRD). An overall low volatility was identified for the extracted HULIS, with the volume fraction remaining (VFR) higher than 55% for all the regenerated HULIS particles at the temperature of 280 degrees C. A kinetic mass transfer model was applied to the thermodenuder (TD) data to interpret the observed evaporation pattern of HULIS, and to derive the mass fractions of semi-volatile (SVOC), low-volatility (LVOC) and extremely low-volatility components (ELVOC). The results showed that LVOC and ELVOC dominated (more than 80 %) the total volume of HULIS. Atomizing processes led to a size-dependent evaporation of regenerated HULIS particles, and resulted in more ELVOC in smaller particles. In order to understand the role of interaction between inorganic salts and atmospheric organic mixtures in the volatility of an organic aerosol, the evaporation of mixed samples of ammonium sulfate (AS) and HULIS was measured. The results showed a significant but nonlinear influence of ammonium sulfate on the volatility of HULIS. The estimated fraction of ELVOC in the organic part of the largest particles (145 nm) increased from 26 %, in pure HULIS samples, to 93% in 1 : 3 (mass ratio of HULIS : AS) mixed samples, to 45% in 2 : 2 mixed samples, and to 70% in 3 : 1 mixed samples, suggesting that the interaction with ammonium sulfate tends to decrease the volatility of atmospheric organic compounds. Our results demonstrate that HULIS are important low-volatility, or even extremely low-volatility, compounds in the organic-aerosol phase. As important formation pathways of atmospheric HULIS, multiphase processes, including oxidation, oligomerization, polymerization and interaction with inorganic salts, are indicated to be important sources of low-volatility and extremely low-volatility species of organic aerosols. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397928200003 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; RIVER DELTA REGION ; AMBIENT AEROSOLS ; HIGH-RESOLUTION ; SORPES STATION ; HULIS ; EVOLUTION ; ACIDS ; SPECTROMETER ; ENVIRONMENTS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18351 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ, Joint Int Res Lab Atmospher & Earth Syst Sci, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ, Inst Climate & Global Change Res, Nanjing 210023, Jiangsu, Peoples R China; 3.Nanjing Univ, Sch Atmospher Sci, Nanjing 210023, Jiangsu, Peoples R China; 4.Univ Helsinki, Dept Phys, Div Atmospher Sci, Helsinki, Finland; 5.Hong Kong Univ Sci & Technol, Div Environm, Kowloon, Hong Kong, Peoples R China; 6.Univ Eastern Finland, Dept Appl Phys, Kuopio 70211, Finland; 7.Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China; 8.Ocean Univ China, Coll Ocean & Atmospher Sci, Key Lab Phys Oceanog, Qingdao 266100, Peoples R China; 9.Collaborat Innovat Ctr Climate Change, Nanjing, Jiangsu, Peoples R China; 10.Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99532 USA |
推荐引用方式 GB/T 7714 | Nie, Wei,Hong, Juan,Hame, Silja A. K.,et al. Volatility of mixed atmospheric humic-like substances and ammonium sulfate particles[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(5). |
APA | Nie, Wei.,Hong, Juan.,Hame, Silja A. K..,Ding, Aijun.,Li, Yugen.,...&Petaja, Tuukka.(2017).Volatility of mixed atmospheric humic-like substances and ammonium sulfate particles.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(5). |
MLA | Nie, Wei,et al."Volatility of mixed atmospheric humic-like substances and ammonium sulfate particles".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.5(2017). |
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