Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1700830114 |
Traffic is a major source of atmospheric nanocluster aerosol | |
Ronkko, Topi1; Kuuluvainen, Heino1; Karjalainen, Panu1; Keskinen, Jorma1; Hillamo, Risto2,4; Niemi, Jarkko V.3; Pirjola, Liisa5; Timonen, Hilkka J.2,4; Saarikoski, Sanna2,4; Saukko, Erkka1; Jarvinen, Anssi1; Silvennoinen, Henna1; Rostedt, Antti1; Olin, Miska1; Yli-Ojanpera, Jaakko1; Nousiainene, Pekka; Kousa, Anu3; Dal Maso, Miikka1 | |
2017-07-18 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:29页码:7549-7554 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | In densely populated areas, traffic is a significant source of atmospheric aerosol particles. Owing to their small size and complicated chemical and physical characteristics, atmospheric particles resulting from traffic emissions pose a significant risk to human health and also contribute to anthropogenic forcing of climate. Previous research has established that vehicles directly emit primary aerosol particles and also contribute to secondary aerosol particle formation by emitting aerosol precursors. Here, we extend the urban atmospheric aerosol characterization to cover nanocluster aerosol (NCA) particles and show that a major fraction of particles emitted by road transportation are in a previously unmeasured size range of 1.3-3.0 nm. For instance, in a semiurban roadside environment, the NCA represented 20-54% of the total particle concentration in ambient air. The observed NCA concentrations varied significantly depending on the traffic rate and wind direction. The emission factors of NCA for traffic were 2.4.10(15) (kg(fuel))(-1) in a roadside environment, 2.6.10(15)(kg(fuel))(-1) in a street canyon, and 2.9.10(15) (kg(fuel))(-1) in an on-road study throughout Europe. Interestingly, these emissions were not associated with all vehicles. In engine laboratory experiments, the emission factor of exhaust NCA varied from a relatively low value of 1.6.10(12) (kg(fuel))(-1) to a high value of 4.3.10(15) (kg(fuel))(-1). These NCA emissions directly affect particle concentrations and human exposure to nanosized aerosol in urban areas, and potentially may act as nanosized condensation nuclei for the condensation of atmospheric low-volatile organic compounds. |
英文关键词 | nanocluster aerosol atmospheric aerosol combustion-derived nanoparticles air pollution traffic emission |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405662300049 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; DIESEL EXHAUST ; PARTICLE NUMBER ; AIR-POLLUTION ; NANOPARTICLE FORMATION ; ULTRAFINE PARTICLES ; SIZE-DISTRIBUTION ; SULFURIC-ACID ; ON-ROAD ; EMISSIONS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/204750 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Tampere Univ Technol, Fac Nat Sci, Aerosol Phys, FI-33101 Tampere, Finland; 2.Finnish Meteorol Inst, Atmospher Composit Res, FI-00101 Helsinki, Finland; 3.Helsinki Reg Environm Serv Author, FI-00520 Helsinki, Finland; 4.Metropolia Univ Appl Sci, Dept Technol, FI-00180 Helsinki, Finland; 5.Turku Univ Appl Sci, Fac Technol Environm & Business, FI-20700 Turku, Finland |
推荐引用方式 GB/T 7714 | Ronkko, Topi,Kuuluvainen, Heino,Karjalainen, Panu,et al. Traffic is a major source of atmospheric nanocluster aerosol[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(29):7549-7554. |
APA | Ronkko, Topi.,Kuuluvainen, Heino.,Karjalainen, Panu.,Keskinen, Jorma.,Hillamo, Risto.,...&Dal Maso, Miikka.(2017).Traffic is a major source of atmospheric nanocluster aerosol.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(29),7549-7554. |
MLA | Ronkko, Topi,et al."Traffic is a major source of atmospheric nanocluster aerosol".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.29(2017):7549-7554. |
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