1:45pm - 2:00pmTU3-1: 1
The impact of vehicular emission in different environments: A comparison of PM10/2.5 and PM10/2.5 OP source apportionment at the urban background, traffic, and train station sites
Ludovic Farnier1, Vy Thuy Ngoc Dinh1, Pamela Dominutti1, Gaëlle Uzu1, Anouk Marsal1, Sophie Darfeuil1, Rhabira Elazzouzi1, Mélodie Chatain2, Alex-Gabriel Marina2, Sylvie Ngo3, Fayes Ghozzi3, Emmanuel Jantzem2, Jean-Luc Jaffrezo1
1Grenoble Alpes University, France; 2Atmo Grand Est, 57070 Metz, France; 3Rolling Stock Engineering Department–Railway Testing Agency, SNCF Voyageurs, Vitry sur Seine 94400, France
In the study, chemical compositions and OP of PM10 and PM2.5 were observed at an urban background, urban traffic and train station sites in Reims (France), that are located 5km apart. The 24-hour sampling was taken in winter and summer. A wide range of chemicals was analyzed (carbonaceous, major ions, elements, alcohol sugars, organic acids), OP assays: AA, DTT, OH. These species were used to perform a PM SA, followed by OP SA for both PM fractions.The inter-comparison of PM and OP SA results provide the PM and OP sources according to PM characteristics, receptor site and sampling period
2:00pm - 2:15pmTU3-1: 2
The nation-wide dataset of urban PM10 chemical speciation for Italy: a focus on secondary inorganic compounds
Maria Chiara Bove1, Eleonora Cuccia2, Adriana Pietrodangelo3, Alice Corina Forello4, Federica Crova4, Alessandro Bigi5, Erika Battich7, Laura Tositti6, Angelo Riccio8, Silvia Becagli9, Stefano Bertinetti10, Rosa Caggiano11, Giulia Calzolai12, Silvia Canepari13, David Cappelletti14, Maria Catrambone14, Daniela Cesari14, Cristina Colombi15, Daniele Contini15, Gianluigi De Gennaro16, Luca Ferrero17, Alessandra Genga18, Pierina Ielpo14, Franco Lucarelli19, Mery Malandrino10, Mauro Masiol20, Dario Massabò21, Paolo Prati21, Cinzia Perrino14, Maria Grazia Perrone22, Tiziana Siciliano18, Elisa Venturini23, Fabiana Scotto24, Arianna Trentini24, Roberta Vecchi4
1Arpa Liguria; 2Arpa Lombardia; 3Institute of Atmospheric Pollution Research; 4University of Milan; 5University of Modena and Reggio Emilia; 6Dep. of Physics and Astronomy, University of Bologna; 7University of Bologna; 8University of Naples Parthenope; 9University of Florence; 10University of Turin; 11CNR; 12National Institute of Nuclear Physics; 13University of Rome; 14Dep. of Chemistry, Biology and Biotechnology, University of Perugia; 15Arpa Lombardia; 16University of Bari; 17University Bicocca; 18University of Salento; 19University of Firenze; 20University Ca' Foscari; 21University of Genova; 22Xearpro Milano; 23University of Bologna; 24Arpa Emilia-Romagna
The Working Group of the Italian Aerosol Society worked for having collected PM10 mass and chemical composition data throughout Italy. The dataset was aggregated with seasonal temporal resolution from 2005-2016 and had a heterogeneous origin related to urban sites of large and medium-sized cities in the Po Valley, inland or coastal areas. The collected dataset allowed to assess differences in chemical composition among cities and by different geographical features: for example the Po Valley with respect to the rest of our Peninsula, relating to secondary inorganic compounds.The collection of more PM chemical composition data was extended to recent years.
2:15pm - 2:30pmTU3-1: 3
Comparative analysis of PM2.5 chemical composition at an urban-industrial and rural sites in northern France
Yamina Allouche, Marc Fadel, Anthony Verdin, Frédéric Ledoux, Dominique Courcot
Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV) UR4492, Université du Littoral Côte d’Opale, F-59140 Dunkerque, France
This study aims to compare the chemical composition of PM2.5 samples from two sites in northern France: an urban-industrial site (Fort-Mardyck) and a rural site (Steene). The origins and the variations in concentrations of chemical components were examined using different tools including concentration roses, conditional bivariate probability function (CBPF), diagnostic ratios, and clustering of HYSPLIT backward trajectories. This study highlights the distinct chemical signature of PM2.5 at the urban-industrial site, characterized by higher concentrations of carbonaceous species and trace metals associated with industrial activities, compared to the rural site.
2:30pm - 2:45pmTU3-1: 4
Impacts of Ship Emissions on PM2.5 and Its Spatiotemporal and Meteorological Properties in a Metro-Harbour Area
Yu-Lun Tseng1, Kuo-Cheng Lo1, Chung-Shin Yuan1, Gerry Bagtasae2
1National Sun Yat-sen University, Taiwan; 2University of the Philippines, Diliman, Quezon City, Philippines
This study investigated the potential impacts of ship emissions on ambient PM2.5 in a metro-harbour complex under various meteorological conditions. The research used a WRF-Chem model to simulate multiple days with elevated PM2.5 levels, revealing a strong correlation between PM2.5 concentrations and meteorological patterns, during the Asian Northeastern Mon-soons (ANMs) during winter and spring and sea-land breezes (SLBs) in summer. Wind field simulations showed the influences of ANMs and SLBs, exacerbated by coastal topography and wind patterns. Diurnal air temperature variations intensified sea breezes in warm seasons.
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