Submicron and Ultrafine Particles in Downtown Rome: How the Different Euro Engines Have Influenced Their Behavior for Two Decades

Atmosphere

Pasquale Avino¹  Maurizio Manigrasso²  Gaetano Settimo³  MariaEleonora Soggiu³  Marco Inglessis³ 

[1] Department of Agriculture, Environmental and Food Sciences, University of Molise, via F. De Sanctis, I-86100 Campobasso, Italy;Department of Technological Innovations, National Institute for Insurance against Accidents at Work INAIL, via Roberto Ferruzzi 38, I-00143 Rome, Italy;Italian Institute of Health, viale Regina Elena 299, I-00185 Rome, Italy;

关键词: submicron fraction;    ultrafine particles;    SMPS;    aerosol;    size fraction;    combustion sources;   

DOI  :  10.3390/atmos11090894

来源: DOAJ

【 摘 要 】

Today, submicron particles are recognized as the new target in environmental sciences and human health issues as well. Their level in urban air is strongly affected by anthropogenic sources, i.e., domestic heating and autovehicular traffic, but the availability of large datasets represents a limit in the knowledge both of the behavior and of the relative levels. This paper would like to highlight the role of these two anthropogenic sources in a big city such as Rome in the particle formation/removal processes in the range 18–750 nm using a Scanning Mobility Particle Analyser (SMPS). The investigation starts from data collected in the previous decade (2010) and analyzes the role played by different Euro (0–6) engines on the particle levels as well as the responsibility of different biomass burning in this issue. Furthermore, a chemometric approach (Cluster Analysis, CA, and Principal Component Analysis, PCA) has allowed the identification of three different clusters, strongly dependent on the accumulation and nucleation modes of the Ultrafine Particles. On the other hand, the PCA demonstrated a scatter distribution in December larger than that in October, justified by the different sources present in these periods.

【 授权许可】

Unknown