Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-17143-2018 |
The influence of particle composition upon the evolution of urban ultrafine diesel particles on the neighbourhood scale | |
Nikolova, Irina1; Cai, Xiaoming1; Alam, Mohammed Salim1; Zeraati-Rezaei, Soheil2; Zhong, Jian1; MacKenzie, A. Rob1,3; Harrison, Roy M.1,4 | |
2018-12-05 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:23页码:17143-17155 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Saudi Arabia |
英文摘要 | A recent study demonstrated that diesel particles in urban air undergo evaporative shrinkage when advected to a cleaner atmosphere (Harrison et al., 2016). We explore, in a structured and systematic way, the sensitivity of nucleation-mode diesel particles (diameter < 30 nm) to changes in particle composition, saturation vapour pressure, and the mass accommodation coefficient. We use a multicomponent aerosol microphysics model based on surrogate molecule (C-16-C-32 n-alkane) volatilities. For standard atmospheric conditions (298 K, 1013.25 hPa), and over timescales (ca. 100 s) relevant for dispersion on the neighbourhood scale (up to 1 km), the choice of a particular vapour pressure dataset changes the range of compounds that are appreciably volatile by two to six carbon numbers. The nucleation-mode peak diameter, after 100 s of model runtime, is sensitive to the vapour pressure parameterisations for particles with compositions centred on surrogate molecules between C22H46 and C24H50. The vapour pressure range, derived from published data, is between 9.23 x 10(-3) and 8.94 x 10(-6) Pa for C22H46 and between 2.26 x 10(-3) and 2.46 x 10(-7) Pa for C24H50. Therefore, the vapour pressures of components in this range are critical for the modelling of nucleation-mode aerosol dynamics on the neighbourhood scale and need to be better constrained. Laboratory studies have shown this carbon number fraction to derive predominantly from engine lubricating oil. The accuracy of vapour pressure data for other (more and less volatile) components from laboratory experiments is less critical. The influence of a core of non-volatile material is also considered; non-volatile core fractions of more than 5 % are inconsistent with the field measurements that we test the model against. We consider mass accommodation coefficient values less than unity and find that model runs with more volatile vapour pressure parameterisations and lower accommodation coefficients are similar to runs with less volatile vapour pressure parameterisations and higher accommodation coefficients. The new findings of this study may also be used to identify semi-volatile organic compound (SVOC) compositions that play dominating roles in the evaporative shrinkage of the nucleation mode observed in field measurements (Dall'Osto et al., 2011). |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452160300001 |
WOS关键词 | PURE-COMPONENT PROPERTIES ; NONELECTROLYTE ORGANIC-COMPOUNDS ; VAPOR-PRESSURE ; VOLATILITY DISTRIBUTION ; EXHAUST PARTICLES ; STREET CANYON ; EVAPORATION ; MOLECULES ; EMISSIONS ; AEROSOLS |
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/22747 |
专题 | 地球科学 |
作者单位 | 1.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England; 2.Univ Birmingham, Dept Mech Engn, Birmingham B15 2TT, W Midlands, England; 3.Univ Birmingham, Birmingham Inst Forest Res BIFoR, Birmingham B15 2TT, W Midlands, England; 4.King Abdulaziz Univ, Dept Environm Sci, Ctr Excellence Environm Studies, POB 80203, Jeddah 21589, Saudi Arabia |
推荐引用方式 GB/T 7714 | Nikolova, Irina,Cai, Xiaoming,Alam, Mohammed Salim,et al. The influence of particle composition upon the evolution of urban ultrafine diesel particles on the neighbourhood scale[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(23):17143-17155. |
APA | Nikolova, Irina.,Cai, Xiaoming.,Alam, Mohammed Salim.,Zeraati-Rezaei, Soheil.,Zhong, Jian.,...&Harrison, Roy M..(2018).The influence of particle composition upon the evolution of urban ultrafine diesel particles on the neighbourhood scale.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(23),17143-17155. |
MLA | Nikolova, Irina,et al."The influence of particle composition upon the evolution of urban ultrafine diesel particles on the neighbourhood scale".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.23(2018):17143-17155. |
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