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Challenges in environmental protection are extremely diverse with many opportunities to infuse environmental research with both new and established mathematical approaches. In this talk I will discuss three different active areas of environmental protection research and the mathe...

The U.S. Environmental Protection Agency&rsquo;s Integrated Risk Information System (IRIS) program is undertaking a reassessment of inhalation exposure to vanadium and compounds to update the existing IRIS assessment of vanadium pentoxide published in 1988. This IRIS assessment w...

This presentation provides an overview of community-based air pollution research for members of the ACRS subcommittee, an interagency workgroup of federal air pollution and community health researchers. Most workgroup members are scientists who are experts in air pollutant measur...

A growing list of chemicals are approved for production and use in the United States and elsewhere, and new approaches are needed to rapidly assess the potential exposure and health hazard posed by these substances. Here, we present a high-throughput, data-driven approach that wi...

Plastic growing demand and the increment in global plastics production have raised the number of spent plastics, out of which over 90% are either landfilled or incinerated. Both methods for handling spent plastics are susceptible to releasing toxic substances, damaging air, water...

In the real world, individuals are exposed to chemicals from sources that vary over space and time. However, traditional risk assessments based on in vivo animal studies typically use a chemical-by-chemical approach and apical disease endpoints. New approach methodologies (NAMs) ...

Direct exposure to household fine particulate air pollution (HAP) associated with the inefficient combustion of fuels (wood, charcoal, coal, crop residues, kerosene, etc.) for cooking, space-heating, and lighting is estimated to result in 2.3 (1.6-3.1) million premature yearly de...

For about half-a-century, similarity profile functions have been the only option to model planetary boundary layer (PBL) processes in meteorological and air quality models. These functions represent boundary layer stability conditions so that PBL processes are realistically model...

Dry deposition is an important sink of many air pollutants and their precursors. Simulated dry deposition rates differ substantially across chemical transport models yet an understanding of the drivers of the inter-model variation is lacking. Here we introduce an effort (&lsquo;A...

Background and aims: A major contributor to household air pollution (HAP) in sub-Saharan Africa is reliance on unclean fuel sources. Improved cookstove technology (ICT) interventions have been promoted as a potential solution, but their impacts on health are unclear. Our aim is t...

A primary sink of many air pollutants and their precursors is dry deposition. Dry deposition estimates differ substantially across chemical transport models yet an understanding of the drivers of the inter-model spread is incomplete. Here we introduce Activity 2 of the Air Qualit...

A primary sink of many air pollutants and their precursors is dry deposition. Dry deposition estimates differ substantially across chemical transport models yet an understanding of the drivers of the inter-model spread is incomplete. Here we introduce Activity 2 of the Air Qualit...

It is imperative to develop sampling and analytical methods to characterize FTOHs in indoor air for the development of mass transfer models to quantitatively predict FTOH emissions and transport for exposure assessment and risk management. This standard describes thermal desorpti...

Human activities have caused continental-scale changes to United States freshwater acidity and alkalinity, but no study has yet quantified how these changes interact with coastal ocean chemistry to control the dynamics and trends of acidification in estuaries of the United States...

Efforts to characterize cumulative impacts have been substantial, but the time has come to explore the next generation of cumulative impact assessments and applications, approaches designed to remedy the past, heal the present, and plan for the future &ndash; approaches designed ...

Exposure to a prototypic air pollutant ozone (O3) has been associated with the activation of neuroendocrine stress response along with neural changes in oxidative stress (OS), inflammation, and Alzheimer&rsquo;s disease-like pathologies in susceptible animal models. We hypothesiz...

Advocacy: Urban Native Collective (UNC)&rsquo;s advocacy strategy is centered around education and partnerships that promote a clear path towards acknowledging and overcoming racial biases while establishing a deeper understanding of Indigenous culture. We advocate for solidarity...

This presentation covers the advancements in air quality analysis tools from the perspective of the Source and FIne Scale Branch (SFSB) located in ORD-CEMM-AMCD.&nbsp; The presentation opens by providing background materials on SFSB and the ORD organization. Then the presentation...

Increasing wildfire impacts in the Western US have motivated the assessment of air cleaners for remediating smoke infiltration into homes. DIY filters and commercially available air cleaners have shown effectiveness at removing smoke generated PM, but the removal of smoke generat...

Some air sensors on the market today fail to deliver the performance expected and/or advertised.&nbsp; Thus, there is still a role for performance testing in both field and controlled laboratory environments to better inform consumers of their likely real-world performance capabi...

In July 2023, USEPA will host an international workshop bringing together experts to discuss air sensor quality assurance strategies.&nbsp; During one session, sensor manufacturers and data aggregators will be invited to speak about the approaches they currently employ (or are un...

This presentation will orient undergraduate students to ongoing air quality research in Robeson County and EPA tools for air quality research. The students will be expected to contribute to this research as part of their studies at UNC's department of Environmental Sciences and E...

Ozone-induced acute lung injury and inflammation following one or two days of exposure are not evident if ozone exposure continues for 3 or more days. While a one-to-two-day exposure can induce neutrophilic inflammation, lung protein leakage, and airway irritation, real-life expo...

Toxicological work suggests gestational parent (GP) diet may modify the effect of ambient pollutants on birth outcomes. We assessed risk of preterm birth in humans in relation to fine particulate matter (PM2.5), ozone (O3), and nitrogen dioxide (NO2) and whether associations vary...

The fourth phase of the Air Quality Model Evaluation International Initiative (AQMEII4) is conducting a diagnostic intercomparison and evaluation of deposition simulated by regional-scale air quality models over North America and Europe. In this study, we analyze annual AQMEII4 s...