11:30am - 11:45amMO2-3: 1
Levels of particulate Polycyclic Aromatic Compounds and their Carcinogenic Risk in an urban center of Greece: A Three-Year Study
Κalliopi Tavernaraki1,2, Irini Tsiodra2, Kyriaki Papoutsidaki1, Despina Paraskevopoulou1,2, Georgios Grivas2, Aikaterini Bougiatioti2, Constantine Parinos3, Georgios Bardis1, Maria Kanakidou1,4,5, Nikolaos Mihalopoulos1,2
1Environmental and Chemical Processes Laboratory (ECPL),Department of Chemistry, University of Crete, Heraklion, 71003, Greece; 2Institute for Environmental Research and Sustainable Development (IERSD), National Observatory of Athens (NOA), Lofos Koufou, P. Penteli, Athens, 15236, Greece; 3Hellenic Centre for Marine Research, Institute of Oceanography, 190 13 Anavyssos, Attiki, Greece; 4Institute of Environmental Physics, University of Bremen, Bremen, Germany; 5CSTACC, ICE-HT, FORTH, Patras, Greece
This study investigates Polycyclic Aromatic Compounds (PACs) in Heraklion, Greece, through a three-year monitoring campaign (2022–2024). Seasonal variations reveal significantly higher PAC concentrations in winter, driven by residential biomass burning, while summer levels are influenced by traffic and shipping. Benzo[a]Pyrene (B[a]P) and oxygenated PAHs (OPAHs) exhibit concentrations up to 18 times higher in winter. Carcinogenic risk assessment (BaPeq) indicates a 16-fold increase in winter. These findings provide critical insights into PAC sources and exposure, emphasizing the need for targeted air quality management strategies in urban Mediterranean environments.
11:45am - 12:00pmMO2-3: 2
Measurement of BC Particles in Human Tissue
Philip K. Hopke1,2, Atsuo Chiu2, Richard K. Miller2
1Clarkson University, United States of America; 2University of Rochester School of Medicine and Dentistry
Black Carbon (BC) particles contribute to air pollution and climate change. Its health impacts extend beyond respiratory diseases. Studying BC translocation into human tissues explores the mechanisms of adverse outcomes. The placenta provides tissue for understanding BC impacts on this organ and embryo/fetus, and for developing prevention strategies. Thus, measured tissue dose metrics provide an epidemiological tool to related exposures to a variety of health outcomes in the woman, fetus, and resulting child. A microscopic methodology for quantifying BC particles in human placental histology slides free of artifacts was developed in which the transplacental movement of BC particles were determined
12:00pm - 12:15pmMO2-3: 3
Hazard Ranking of Fresh and Aged Combustion Aerosol Emissions from the Transportation Sector by a Human Bronchial Tissue Model and a Multi-Criteria Decision Making Approach
Hendryk Czech1,2, Sebastiano Di Bucchianico1,2, Barbara Rothen-Ruthishauser3, Pasi Jalava4, Thomas Adam5, Otto Hänninen6, Bert Buchholz1, Olli Sippula4, Ralf Zimmermann1,2, Johan Øvrevik7
1University of Rostock, Germany; 2Helmholtz Centre Munich, Germany; 3University of Fribourg, Switzerland; 4University of Eastern Finland, Finland; 5University of the Bundeswehr Munich, Germany; 6Finnish Institute for Health and Welfare, Finland; 7Norwegian Institute of Public Health, Norway
The transportation sector emits ultrafine particles (UFPs), impacting air quality and health. A co-culture model of bronchial, macrophage, and endothelial cells was exposed to emissions from six transportation sources, including road, marine, and aviation. Fresh and aged emissions were tested using the oxidation flow reactor PEAR. Cytotoxicity, barrier integrity, and inflammation were assessed via LDH, TEER, and IL8. A hazard ranking using weighted Power Weakness Ratio (wPWR) for multi-criterion decision making identified fresh CNG and diesel as most hazardous. Ageing generally reduced toxicity, especially for diesel, while marine fuels showed minimal change.
12:15pm - 12:30pmMO2-3: 4
Polycyclic Aromatic Hydrocarbons and their oxy- and nitro-Derivatives in Urban Aerosol: Levels, Emission Sources and Correlation with Oxidative Potential.
Giulia Simonetti1, Lorenzo Massimi2,3, Patrizia Di Filipppo4, Carmela Riccardi4, Andrea Fricano1, Francesca Buiarelli1, Silvia Canepari2,3, Donatella Pomata4
1Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy; 2Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy; 3C.N.R. Institute of Atmospheric Pollution Research, Monterotondo St., Rome 00015, Italy; 4DIT, INAIL, Via Roberto Ferruzzi 38, 00143 Rome, Italy
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous organic compounds from human activities like industrial processes and vehicle emissions. Recent studies are focusing on PAH derivatives (nitro-PAHs and oxy-PAHs) produced from incomplete combustion and photochemical reactions in atmosphere known for their high toxicity and limited emission sources knowledge. This work deals with the determination of PAH, Nitro- and Oxy-PAH concentrations in two sites located in Sacco River Valley (IT) and on the investigation of possible relationship between local emission source and PHAs and their derivates concentration. In addition, correlation with oxidative potential were evaluated and risk assessment analysis was performed.
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