Science Inventory

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Assessing the fate of PFAS in the environment requires improved analytical methodologies to quantify a greater variety of PFAS and application of these methods to investigate their occurrence in complex sample matrices. PFAS precursors are a compound class of emerging concern tha...

Metals are used in 3-dimensional (3D) printer filaments in the manufacture of 3D printed objects. Exposure to the filaments, printed objects and emissions from printing may pose health risks from release of toxic metals. This study investigated the cytotoxicity of extruded 3D pri...

Background:&nbsp; Xenobiotic metabolites are widely present in human urine and can indicate recent exposure to environmental chemicals. Proper inference of which chemicals contribute to these metabolites can inform human exposure and risk. Furthermore, longitudinal biomonitoring...

Recent advances in high-resolution mass spectrometry (HRMS) have enabled the detection of thousands of chemicals from a single sample, while computational methods have improved the identification and quantification of these chemicals in the absence of reference standards typicall...

This technical summary report provides a review of the U.S. EPA Office of Research and Development&rsquo;s (ORD) laboratory studies that evaluated the efficacy of decontamination techniques to neutralize ricin on a variety of different surfaces. The tests referenced in this summa...

A prior multigenerational perfluorooctane sulfonic acid (PFOS) exposure investigation in zebrafish reported adverse effects at 0.734 &micro;g/L, among the lowest aquatic effect levels for PFOS reported to date. The present three-generation PFOS exposure quantified survival, growt...

This presentation will cover the exposure pathways of PFAS with particular emphasis on biosolids and landfills.&nbsp;&nbsp; Temporal and Spatial Assessment of PFAS in Wastewater Treatment- Project designed to:&nbsp; Develop a better understanding of the temporal variability of PF...

Accurate fire emissions inventories are crucial to predict the impacts of wildland fires on air quality and atmospheric composition. Two traditional approaches are widely used to calculate fire emissions: a satellite-based top-down approach and a fuels-based bottom-up approach. H...

Formaldehyde (HCHO) is one of the most abundant non-methane volatile organic compounds (VOCs) emitted by fires.&nbsp;HCHO&nbsp;also undergoes chemical production and loss as a fire plume ages, and it can be an important oxidant precursor. In this study, we disentangle the process...

During the 2019 Fire Influence on Regional to Global Environments and Air Quality&nbsp;(FIREX-AQ) study, the NASA DC-8 carried out in situ chemical measurements in smoke plumes emitted from wildfires and agricultural fires in the contiguous United States. The DC-8 payload include...

Fires emit sufficient sulfur to affect local and regional air quality and climate. This study analyzes SO2&nbsp;emission factors and variability in smoke plumes from US wildfires and agricultural fires, as well as their relationship to sulfate and hydroxymethanesulfonate (HMS) fo...

Global positioning systems (GPS) provide users with positioning, navigation, and timing services. However, this resource is limited when it comes to gathering information and guidance for interior spaces: GPS signals communicate with satellites and do not move easily through soli...

In the event of a chemical, biological, radiological, and/or nuclear (CBRN) wide-area incident, the U.S. Environmental Protection Agency (EPA) is responsible for environmental remediation, waste disposal processes, data collection, and data quality checks to advise decision-makin...

Globally, billions of people burn fuels indoors for cooking and heating, which contributes to millions of chronic illnesses and premature deaths annually. Additionally, residential burning contributes significantly to black carbon emissions, which have the highest global warming ...

This presentation provides an overview of EPA Office of Research Development's extramural research grant programs that are managed by the Office of Science Advisor, Policy and Engagement

This is the PowerPoint slide deck for the Science to Achieve Results (STAR) &ldquo;Air Quality Information: Making Sense of Air Pollution Data to Inform Decisions in Underserved Communities Overburdened by Air Pollution&rdquo; Funding Opportunity Informational Webinar that will b...

Bacillus anthracis, the causative agent of inhalation anthrax, is one of the most highly studied biological threat agents. Significant gaps remain related to the remediation of a wide area following such biological release. This extends to the remediation of critical assets owned...

Battelle and EPA evaluated the effectiveness of UAV platforms to perform volumetric measurements of various types of debris (e.g., biomass such as fallen vegetation, stacks of building material, and other debris) using &nbsp;lidar and structure from motion (SfM) photogrammetry. T...

This is a talk I will give as part of the Toxics Webinar | Issue Cover Authors of 2023. I will only discuss published work that has been cleared and published in Toxics last year.

Critical loads or levels (CL) are estimates of quantitative thresholds for levels of deposition above which significant harmful ecological effects can occur, according to present knowledge.&bull; Recent research focused on establishing CLs for tree species&rsquo; growth and survi...

Climate change presents cascading and compounding threats to low-income and underrepresented communities, increasing the need for equitable resilience planning. However, many local governments face challenges incorporating community voices with resilience and vulnerability data i...

Per- and polyfluoroalkyl substances (PFAS) are widely used, and their fluorinated state contributes to unique uses and stability but also long half-lives in the environment and humans. PFAS have been shown to be toxic, leading to immunosuppression, cancer, and other adverse healt...

Increasing and inequitable impacts from climate change and other hazards are a growing concern for communities and a focus of planning efforts. This research, conducted through case studies with several U.S. communities, explores and develops ways to center equity in resilience p...

Microplastics (MPs) are an emerging class of pollutants in air, soil, and, especially, in all aquatic environments.&nbsp; Secondary MPs are generated in the environment during fragmentation of especially photo-oxidized plastic litter. Photo-oxidation is mediated primarily by sola...

Assessing the fate of PFAS in the environment requires improved analytical methodologies to quantify a greater variety of PFAS and application of these methods to investigate their occurrence in complex sample matrices. PFAS precursors are a compound class of emerging concern tha...