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SOT 2024 Abstract Background and Purpose: The use of in vitro systems to model the effects of inhalation exposures has focused on using differentiated primary human bronchial epithelial cell (dpHBEC) cultures as they recapitulate key features of the airway epithelium in vivo.&nbs...

Computational fluid dynamics simulations are used to model the velocity field and the transport of a passive scalar within a micro-scale chamber used to measure diffusional transport through various building materials.&nbsp; Comparisons of solutions obtained using a steady, lamin...

Data visualization tools that are quick and easy to use, require no coding skills, and can be used with any type of sensor are in high demand.&nbsp; In addition to visualizing their own data, users often wish to compare the data they collect with other nearby data sources such as...

U.S. EPA released two free tools to help users visualize their air data. REal TIme Geospatial Data Viewer (RETIGO) is an easy to use, web-based tool which requires no coding skills and can be used with any type of measurement device. Users can visualize their data and compare it ...

INTRODUCTION: Coccidioidomycosis is an emerging fungal infection caused by inhalation of airborne spores of the Coccidioides genus. While Coccidioides immitis has been detected in soils across California, successful recovery of C. immitis from air samples has so far been limited ...

With increasing concerns about freshwater cyanobacteria blooms, there is a need to identify which waterbodies are at risk for developing these blooms, especially those that produce cyanotoxins. To address this concern, we developed spatial statistical models using the US National...

Per- and polyfluoroalkyl substances (PFAS) are used in various industrial products; however, they pose serious health risks. In this study, soil, soil gas, and groundwater samples were collected at a PFAS manufacturing facility in New Jersey, USA, to determine the presence and di...

The do-it-yourself (DIY) air cleaner consisting of a box fan and a furnace filter is a widely used low-cost alternative to commercial air cleaners because of its increased accessibility. We evaluated the clean air delivery rate (CADR) of different DIY air cleaner designs for redu...

This presentation will be given at a workshop on developing best practices for chemically characterizing vapor phase emissions from PFAS destruction technologies. The audience will include researchers from academia, goverment, and industry. All slides have been cleared previously...

EPA Wildfire Research: Impacts on Air and Water Quality WESTAR-WRAP Spring Business Meeting 2024, Riverside, California Wildland fire smoke impacts millions of people in the United States every year. The EPA&rsquo;s Office of Research and Development is addressing our increasingl...

This is a presentation to Air Resource Advisors (ARAs) affiliated with the Interagency Wildland Fire Air Quality Response Program (IWFAQRP). ARAs are technical specialists who are deployed to wildfire incidents to provide smoke monitoring, modeling, and communications support. Th...

RATIONALE&nbsp; Air pollution exposure in pregnancy may affect fetal growth, and fetal growth restriction (FGR) is associ&shy;ated with lung im&shy;pairment that can persist into adulthood. Associated diseases include asthma, pulmonary hypertension (PH), and chronic obstructive p...

Laboratory and field tests examined the potential for unmanned aircraft system (UAS) rotor wash effects on gas and particle measurements from a biomass combustion source. Tests compared simultaneous placement of two sets of CO and CO2 gas sensors and PM2.5 instruments on a UAS bo...

This is a brief summary of emission characterization from five in-situ oil burn experiments including the emission sampler and emission factor calculation.

Video showing drone based emission sampling from different types of in-situ oil burn techniques.&nbsp;

Basal increases in ambient temperature and regional temperature spikes are associated with changes in weather patterns, increases in wildfires and other natural disasters. This pattern of climate change directly or indirectly impacts human health and lifestyle, especially in vuln...

The U.S. Environmental Protection Agency’s (U.S. EPA) Office of Research and Development (ORD) recognized the need to develop an approach to study non-chemical stressors within a chemical stressor paradigm. Research is needed to identify which non-chemical stressors are likely to...

Background and Purpose: To establish toxicity reference values, risk assessments require reliable methods with well-characterized uncertainty. Next generation risk assessment will require in vitro to in vivo extrapolation (IVIVE) to translate observed cellular responses to whole ...

In this poster for the National Adaptation Forum 2024, we will identify and categorize literature published in the last 20 years that addresses observed health benefits and burdens of NbS with respect to vulnerable communities experiencing climate change. Using a visual approach ...

This dataset includes continuous formaldehyde measurements made at three field sites in the Long Island Sound region during the summer of 2023. A Picarro G2307 formaldehyde and methane analyzer was run at Rutgers in New Brunswick, NJ and Aerodyne formaldehyde instruments were run...

Seagrass meadows and oyster beds are important coastal systems that provide many benefits. When these habitats are located near each other, benefits may include improved water quality and increased carbon storage. In two RI salt ponds, habitat zones sampled included eelgrass beds...

Climate change is associated with increased ambient temperatures, more frequent and longer-lasting heatwaves, and increased air pollution from widespread wildfires, all of which are likely to exacerbate stress-related disorders. We hypothesized that stress caused by subchronic hi...

Research efforts aimed at the development of new measurement technologies capable of measuring additional or emerging pollutants of concern at lower concentrations, by smaller and more portable devices, in real-time, and at lower cost continue to be essential for meeting our curr...

Understanding vapor intrusion (VI) temporal variability is key for the design of sampling strategies intended to assess reasonable maximum exposure of indoor air concentrations of volatile organic compounds (VOCs) as well as risk evaluation and mitigation planning. VI temporal va...

We use the Community Multiscale Air Quality (CMAQv5.4) model to examine the potential impact of particulate nitrate (pNO3&minus;) photolysis on air quality over the Northern Hemisphere. We estimate the photolysis frequency of pNO3&minus;&nbsp;by scaling the photolysis frequency o...