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DOI | 10.5194/acp-19-6367-2019 |
Inversely modeling homogeneous H2SO4-H2O nucleation rate in exhaust-related conditions | |
Olin, Miska1; Alanen, Jenni1,3; Palmroth, Marja R. T.2; Ronkko, Topi1; Dal Maso, Miikka1 | |
2019-05-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:9页码:6367-6388 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | The homogeneous sulfuric acid-water nucleation rate in conditions related to vehicle exhaust was measured and modeled. The measurements were performed by evaporating sulfuric acid and water liquids and by diluting and cooling the sample vapor with a sampling system mimicking the dilution process occurring in a real-world driving situation. The nucleation rate inside the measurement system was modeled inversely using CFD (computational fluid dynamics) and the aerosol dynamics code, CFD-TUTMAM (Tampere University of Technology Modal Aerosol Model for CFD). The nucleation exponents for the concentrations of sulfuric acid and water and for the saturation vapor pressure of sulfuric acid were found to be 1.9 +/- 0.1, 0.50 +/- 0.05, and 0.75 +/- 0.05, respectively. These exponents can be used to examine the nucleation mechanisms occurring in exhaust from different combustion sources (internal combustion engines, power plant boilers, etc.) or in the atmosphere. Additionally, the nucleation rate can be expressed with the exponents as a function of the concentrations of sulfuric acid and water and of temperature. The obtained function can be used as a starting point for inverse modeling studies of more complex nucleation mechanisms involving extra compounds in addition to sulfuric acid and water. More complex nucleation mechanisms, such as those involving hydrocarbons, are observed with real vehicle exhaust and are also supported by the results obtained in this study. Furthermore, the function can be used to improve air quality models by using it to model the effect of sulfuric acid-emitting traffic and power generation on the particle concentration in urban air. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000468193500001 |
WOS关键词 | PARTICULATE MATTER EMISSIONS ; ATMOSPHERIC SULFURIC-ACID ; DUTY DIESEL EXHAUST ; ON-ROAD MEASUREMENT ; PARTICLE FORMATION ; AEROSOL DYNAMICS ; VEHICLE EXHAUST ; ONLINE MEASUREMENTS ; SIZE-DISTRIBUTION ; ORGANIC VAPORS |
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/183188 |
专题 | 地球科学 |
作者单位 | 1.Tampere Univ, Aerosol Phys Lab, Phys Unit, POB 692, Tampere 33014, Finland; 2.Tampere Univ, Bio & Circular Econ, Fac Engn & Nat Sci, POB 541, Tampere 33014, Finland; 3.AGCO Power, Linnavuorentie 8-10, Linnavuori 37240, Finland |
推荐引用方式 GB/T 7714 | Olin, Miska,Alanen, Jenni,Palmroth, Marja R. T.,et al. Inversely modeling homogeneous H2SO4-H2O nucleation rate in exhaust-related conditions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(9):6367-6388. |
APA | Olin, Miska,Alanen, Jenni,Palmroth, Marja R. T.,Ronkko, Topi,&Dal Maso, Miikka.(2019).Inversely modeling homogeneous H2SO4-H2O nucleation rate in exhaust-related conditions.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(9),6367-6388. |
MLA | Olin, Miska,et al."Inversely modeling homogeneous H2SO4-H2O nucleation rate in exhaust-related conditions".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.9(2019):6367-6388. |
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