Science Inventory

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Partitioning of per- and polyfluoroalkyl substances (PFAS) to indoor materials, including clothing, may prolong the residence time of PFAS indoors and contribute to exposure. During the Indoor PFAS Assessment (IPA) Campaign, we measured concentrations of nine neutral PFAS in air ...

With increasing public awareness of PFAS, and their presence in biological and environmental media across the globe, comes a matching increase in the number of PFAS monitoring studies. As more matrices and sample cohorts are examined, there are more opportunities for matrix inter...

Background:&nbsp;Quality assurance (QA) and quality control (QC) practices are key tenets that facilitate study and data quality across all applications of untargeted metabolomics. These important practices will strengthen this field and accelerate its success. The Best Practices...

Forest composition and ecosystem services are sensitive to anthropogenic pressures like climate change and atmospheric deposition of nitrogen (N) and sulfur (S). Here we extend recent forest projections for the current cohort of trees in the contiguous US, characterizing potentia...

This study investigated the decay rates of wastewater-associated markers and enteric viruses in laboratory microcosms mimicking estuarine water environments in temperate Sydney, NSW, Australia using qPCR and RT-qPCR assays. The results demonstrated the reduction in concentrations...

Atmospheric nitrogen (N) and sulfur (S) deposition can significantly affect forest biodiversity and production by altering the growth and survival of trees. Three decades of air quality regulations in the United States have led to large reductions in oxides of N (44&ndash;81%) an...

This sub-product is an invited virtual presentation to a meeting with Maldives governmental and non-governmental stakeholders hosted by the World Bank. The presentation describes experiences applying decision analysis tools in a deliberative setting with the city of Dania Beach.&...

Collocation of air quality sensors at existing regulatory air monitoring sites allows sensor data comparison against quality-assured reference data and is a cost-effective method for understanding the performance of lower-cost air sensors. In some cases, collocations can allow fo...

Stable isotope ratios integrate, indicate, record, and trace fundamental processes in hydrology and ecology.&nbsp; Stored within the atoms of samples, stable isotope ratios of specific elements unlock stories about ecological processes that impact water quality and quantity.&nbsp...

Structural models based on Bayesian networks are powerful knowledge representation tools that can capture diverse problem analysis structures and provide a basis for quantitative analysis and weight of evidence. They have only recently been developed and applied in fields ranging...

Toxicology has been an active research field for many decades, with academic, industrial and government involvement. Modern omics and computational approaches are changing the field, from merely disease-specific observational models into target-specific predictive models. Traditi...

This invited keynote presentation provides compressive definitions regarding sustainable development, sustainability assessment and design, life cycle analysis, and their application in manufacturing more environmentally friendly chemicals with less occupational exposure. Similar...

Background and PurposeSoil and dust are effective sorbents for many organic chemicals and are known to concentrate lipophilic, less volatile, environmental pollutants. For children&rsquo;s risk assessment, this is important, primarily because children consume relatively large qua...

Report on the Wide Area Demonstration (WAD) under the Analysis for Coastal Operational Resiliency (AnCOR) project. The AnCOR WAD was conducted from May 2 through May 27, 2022. The test venue was located at Fort A.P. Hill (FAPH), Bowling Green, VA. All work will was conducted at F...

Drinking water storage tanks serve several important functions, which include but are not limited to providing an adequate water supply in the case of firefighting emergencies, power outages, water main breaks, or other system failures. The water level elevation in storage tanks ...

Health risk assessments generally involve many extrapolations: for example, from animals to humans or from high doses to lower doses. Health risk assessments for PCBs involve all the usual uncertainties, plus additional uncertainties due to the nature of PCBs as a dynamic, comple...

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...

Manufacturing advancements in three-dimensional (3D) printing of plastic polymers have outpaced our understanding of exposure risks for domestic use. One understudied aspect is the release of metal additives incorporated into plastic polymers before and after printing. Metal addi...

The purpose of this research was to determine the viability of installing low-cost storm sewer retrofit devices in multiple locations within an urban watershed.  A major component of this was the necessity for designing, fabricating, and operation of such retrofits which are not ...

This is a power point presentation that summarizes the potential for phototoxicity of crude and refined oils. The presentation will cover the phototoxic components of oil, mechanisms of petroleum phototoxicity, and the environmental and biological modulation of phototoxicity.

The U.S. Environmental Protection Agency, Office of Research and Development, Homeland Security Research Program (HSRP) aims to increase United States&rsquo; capabilities to prepare for and respond to releases of oil and hazardous substances into the environment. HSRP&rsquo;s inn...

Per- and polyfluoroalkyl substances (PFAS) are a class of chemicals that are widespread throughout soils and waters around the world, leading to high potential for exposure. One concern of PFAS exposure is the biotransformation of the native species to unknown and potentially har...

Per- and polyfluoroalkyl substances (PFAS) are a diverse array of more than 10,000 chemicals that are widely used in manufacturing and consumer products due to beneficial properties such as strong C-F bonds and resistance to water, oil, and grease. The environmental distribution ...

Acute and long-term exposure to per- and polyfluoroalkyl substances (PFAS) is of rising concern due to their persistent detection and abundance in the environment coupled with their potential for bioaccumulation. The replacement of legacy PFAS with ether-linked carboxylic acid (P...

The EPA Transcriptomic Assessment Product (ETAP) is a human health assessment that utilizes a standardized short-term in vivo study design and data analysis procedures to develop transcriptomic-based reference values for data poor chemicals. The reference value represents the dai...