Publications by authors named "Irini Tsiodra"
Article Synopsis
- Vehicular emissions significantly contribute to urban air pollution, primarily through the release of ultrafine particles (UFPs) that are harmful to respiratory and cardiovascular health.* -
- A study conducted in a New Jersey hospital parking garage measured PM levels, finding that UFP mass concentrations were higher in summer (3.59 µg/m) than winter (2.51 µg/m), with UFPs containing harmful substances like elemental carbon and polycyclic aromatic hydrocarbons (PAHs).* -
- Modeling showed that a substantial portion (23.61%) of these UFPs enters the lungs, leading to significant exposure (10.67 µg in winter and 15.25 µg in summer)
Article Synopsis
- This study highlights the health risks associated with oxygenated polycyclic aromatic hydrocarbons (OPAHs) and their need for monitoring alongside traditional PAHs to evaluate urban health impacts.
- An extensive sampling campaign in Athens, Greece, revealed seasonal variations in polycyclic aromatic compounds (PACs), primarily influenced by residential wood burning, especially during winter.
- The impact of external factors like biomass burning and the COVID-19 lockdown on PAC levels was significant, emphasizing the importance of regulating biomass burning to improve urban air quality.
The global increase in wildfires, primarily driven by climate change, significantly affects air quality and health. Wildfire-emitted particulate matter (WFPM) is linked to adverse health effects, yet the toxicological mechanisms are not fully understood given its physicochemical complexity and the lack of spatiotemporal exposure data. This study focuses on the physicochemical characterization of WFPM from a Canadian wildfire in June 2023, which affected over 100 million people in the US Northeast, particularly around New Jersey/New York.
View Article and Find Full Text PDFTo study the spatiotemporal variability of particle-bound polycyclic aromatic hydrocarbons (PAHs) and assess their carcinogenic potential in six contrasting urban environments in Greece, a total of 305 filter samples were collected and analyzed. Sampling sites included a variety of urban background, traffic (Athens, Ioannina and Heraklion), rural (Xanthi) and near-port locations (Piraeus and Volos). When considering the sum of 16 U.
View Article and Find Full Text PDFThe importance of dust and biomass burning episodes on the atmospheric concentration of water-soluble reactive phosphate (SRP) was determined in the eastern Mediterranean. SRP was measured with a new rapid real-time automated analytical system with a time resolution of a few minutes per sample and with an extremely low detection limit. The average atmospheric concentration of SRP during the sampling campaign was estimated at 0.
View Article and Find Full Text PDFOxidative potential (OP), which is the ability of certain components in atmospheric particles to generate reactive oxidative species (ROS) and deplete antioxidants in vivo, is a prevailing toxicological mechanism underlying the adverse health effects associated with exposure to ambient aerosols. While previous studies have identified the high OP of fresh biomass burning organic aerosols (BBOA), it remains unclear how it evolves throughout atmospheric transport. Using the dithiothreitol (DTT) assay as a measure of OP, a combination of field observations and laboratory experiments is used to determine how atmospheric aging transforms the intrinsic OP (OP) of BBOA.
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