Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-2701-2019 |
Effect of salt seed particle surface area, composition and phase on secondary organic aerosol mass yields in oxidation flow reactors | |
Ahlberg, Erik1,2; Eriksson, Axel3; Brune, William H.4; Roldin, Pontus2; Svenningsson, Birgitta2 | |
2019-03-01 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:4页码:2701-2712 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; USA |
英文摘要 | Atmospheric particulate water is ubiquitous, affecting particle transport and uptake of gases. Yet, research on the effect of water on secondary organic aerosol (SOA) mass yields is not consistent. In this study, the SOA mass yields of an alpha-pinene and m-xylene mixture, at a concentration of 60 mu g m(-3), were examined using an oxidation flow reactor operated at a relative humidity (RH) of 60% and a residence time of 160 s. Wet or dried ammonium sulfate and ammonium nitrate seed particles were used. By varying the amount of seed particle surface area, the underestimation of SOA formation induced by the short residence time in flow reactors was confirmed. Starting at a SOA mass concentration of similar to 5 mu g m(-3), the maximum yield increased by a factor of similar to 2 with dry seed particles and on average a factor of 3.2 with wet seed particles. Hence, wet particles increased the SOA mass yield by similar to 60% compared to the dry experiment. Maximum yield in the reactor was achieved using a surface area concentration of similar to 1600 mu m(2) cm(-3). This corresponded to a condensational lifetime of 20 s for low-volatility organics. The O : C ratio of SOA on wet ammonium sulfate was significantly higher than when using ammonium nitrate or dry ammonium sulfate seed particles, probably due to differences in heterogeneous chemistry. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460118000001 |
WOS关键词 | CLOUD CONDENSATION NUCLEI ; LIQUID WATER ; RELATIVE-HUMIDITY ; HETEROGENEOUS OXIDATION ; CHEMICAL-COMPOSITION ; RADICAL CHEMISTRY ; AMMONIUM-NITRATE ; HIGH-RESOLUTION ; SMOG CHAMBER ; PHOTOOXIDATION |
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/30811 |
专题 | 地球科学 |
作者单位 | 1.Lund Univ, Ctr Environm & Climate Res, Solvegatan 37, S-22352 Lund, Sweden; 2.Lund Univ, Div Nucl Phys, Box 118, S-22100 Lund, Sweden; 3.Lund Univ, Ergon & Aerosol Technol, Box 118, S-22100 Lund, Sweden; 4.Penn State Univ, Dept Meteorol, 503 Walker Bldg, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Ahlberg, Erik,Eriksson, Axel,Brune, William H.,et al. Effect of salt seed particle surface area, composition and phase on secondary organic aerosol mass yields in oxidation flow reactors[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(4):2701-2712. |
APA | Ahlberg, Erik,Eriksson, Axel,Brune, William H.,Roldin, Pontus,&Svenningsson, Birgitta.(2019).Effect of salt seed particle surface area, composition and phase on secondary organic aerosol mass yields in oxidation flow reactors.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(4),2701-2712. |
MLA | Ahlberg, Erik,et al."Effect of salt seed particle surface area, composition and phase on secondary organic aerosol mass yields in oxidation flow reactors".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.4(2019):2701-2712. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论