TagUFP(8)

Ningrui Liu, Rajni Oshan, Magali Blanco, Lianne Sheppard, Edmund Seto, Timothy Larson, Elena Austin OCTOBER 24, 2024 Contents Introduction Methods Results and discussion Conclusions Contents Introduction Methods Results and discussion Conclusions Introduction ◼ Health issues of air pollution • Adverse health outcomes: cardiovascular diseases, respiratory diseases, lung cancer, etc. • Global Burden of Disease 2021: Air pollution is the second leading risk factor, accounting for 8.2% of total DALYs. ◼ Mobile monitoring (MM) studies GBD2021, Lancet, 2024, 403: 2162–2203. Apte et al., Science, 2024, 385: 380–385. • Drive vehicles with high-quality instruments through fixed routes • Have higher spatial resolution than regulatory monitoring RESEARCH GAP OF MM • More focus on PM2.5 than ultrafine particles (UFPs), while health impacts depend on size distribution and chemical composition • Multi-pollutant spatiotemporal data from MM have not been fully used in health studies. Introduction ◼ Source apportionment (SA) studies • Use multi-pollutant data to derive the sources • Approach: positive matrix factorization (PMF), PCA, et al. • Many relied on regulatory monitoring data, and few on MM Hopke et al., Sci. Total Environ., 2020, 740: 140091. Hopke et al., Sci. Total Environ., 2022, 819: 153104. Larson et al., Atmos. Environ., 2017, 152: 201-211. RESEARCH GAP OF SA-MM • Few considered particle size distribution • Few classified traffic-related source into different vehicle types • Limited time frames (days to weeks) ◼ Research aims: PMF + MM 1. Characterize emission sources more accurately 2. Assess source-specific air pollution exposures 3. Estimate the annual average emission…

Research has implications for large populations near airports: communities rank high on adverse environmental metrics

A scientific study examining the association between long-term exposure to ultrafine particles (UFP) and mortality in the Netherlands. The study followed 10.8 million adults from 2013-2019 and found significant associations between UFP exposure and natural, cardiovascular, respiratory, and lung cancer mortality.

Kwon et al. Experimental & Molecular Medicine (2020) 52:318–328 https://doi.org/10.1038/s12276-020-0405-1 Experimental & Molecular Medicine REV I EW ART ICLE Open Ac ce s s Ultrafine particles: unique physicochemical properties relevant to health and disease Hyouk-Soo Kwon 1, Min Hyung Ryu2 and Christopher Carlsten2 Abstract Ultrafine particles (UFPs) are aerosols with an aerodynamic diameter of 0.1 µm (100 nm) or less. There is a growing concern in the public health community about the contribution of UFPs to human health. Despite their modest mass and size, they dominate in terms of the number of particles in the ambient air. A particular concern about UFPs is their ability to reach the most distal lung regions (alveoli) and circumvent primary airway defenses. Moreover, UFPs have a high surface area and a capacity to adsorb a substantial amount of toxic organic compounds. Harmful systemic health effects of PM10 or PM2.5 are often attributable to the UFP fraction. In this review, we examine the physicochemical characteristics of UFPs to enable a better understanding of the effects of these particles on human health. The characteristics of UFPs from diesel combustion will be discussed in the greatest detail because road vehicles are the primary source of UFP emissions in urban pollution hotspots. Finally, we will elaborate on the role of UFPs on global climate change, since the adverse effects of UFPs on meteorological processes and the hydrological cycle may even be more harmful to human health than their direct toxic effects. Introduction Ultrafine particles (UFPs) are particles with…

The Mobile ObserVations of Ultrafine Particles (MOV-UP) study was a two-year project funded by the State of Washington to study air quality impacts of air traffic for communities located near and below the flight paths of Seattle-Tacoma International Airport. The University of Washington research team that led the study coordinated with local governments and solicited