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Fluorotelomer alcohols (FTOHs) are a group of volatile and semi-volatile per- and polyfluoroalkyl substances (PFAS) commonly found in indoor air and contribute to PFAS inhalation exposure. Improving our understanding of the contribution of FTOHs to human exposure to PFAS indoors ...

Polychlorinated biphenyls (PCBs), though heavily restricted in many countries, continue to be detected in modern environments due to inadvertent production methods such as pigment manufacturing. This study investigates the occurrence and leaching behavior of inadvertently generat...

Fecal contamination of coastal waters threatens human and ecosystem health. Microbial source tracking (MST) methods offer a strategy to identify sources of fecal contamination through the measurement of genetic markers associated with a particular animal host. In this study, we m...

The health and integrity of freshwater ecosystems are significantly affected by anthropogenic pressures. Understanding the ecological conditions of freshwater ecosystems is crucial for effective conservation and management strategies. In this study, we developed a new multimetric...

Existing coastal wetland mitigation banks are increasingly vulnerable to climate change impacts such as sea-level rise (SLR) and saltwater intrusion, threatening restoration success, credit release, and long-term management. Consideration of existing and future vulnerabilities to...

Per- and polyfluoroalkyl substances (PFAS) require non-targeted analysis (NTA) to uncover novel structures and comprehensively characterize environmental contamination. While LC-ESI-MS has dominated PFAS NTA according to bibliometric analyses, this presentation demonstrates that ...

Water resource managers need Streamflow Duration Assessment Methods (SDAMs) to predict if streams are ephemeral, intermittent or perennial. Although SDAMs exist for some regions of the United States, no validated SDAM has been developed for Puerto Rico and the US Virgin Islands. ...

Evidence assessment—identifying, evaluating, and synthesizing data and findings from previous studies—is important to inform environmental decision-making but can be slow and resource intensive. Users seeking efficiency have developed multiple definitions and methods ...

Introduction Haloacetic acids (HAAs) are water disinfection byproducts (DBPs) regulated as a mixture of five species (HAA5) in the United States and Canada. To date, two brominated HAAs (BrHAAs) in HAA5 (monobromoacetic acid [MBAA], dibromoacetic acid [DBAA]) have been associated...

The One Health concept strongly brings into focus the important connections for human and ecosystem health. However, the incorporation of behavior method guidelines in risk assessment and regulation/policy is not equal between human and ecological disciplines. A survey was conduc...

Accelerating global change is a hallmark of the Anthropocene, and the interaction of rapid change in land use and land cover make understanding the response of social-ecological systems to global change difficult to predict. Global change rapidly affects social-ecological systems...

From the local to the global scale, the world is rapidly changing in non-linear ways that are only partly predictable and knowable. Currently, human decision making and ingenuity in response to change focuses on mitigating the drivers and effects of change and adapting to those c...

Efforts to constrain the negative environmental impacts of excess nitrogen (N) and phosphorus (P) are costly and challenging, due in part to inconsistent reporting of nutrient sources at temporal and spatial scales relevant for local decision making. To meet this challenge, the U...

Blood lead (Pb) monitoring plays an important role in identifying children experiencing increased Pb exposure based upon their elevated blood Pb levels (PbB). Following actions to decrease Pb exposure, it is important to understand whether a slow decline in PbB is due to the slow...

Human Exposure Database System (HEDS) is an Internet-based system developed to provide public access to human-exposure-related data from studies conducted by EPA's National Exposure Research Laboratory (NERL). HEDS was designed to work with the EPA Office of Research and Devel...

Many chemicals found in the environment and commerce have been characterized for potential hazards by using in vitro screens. Translating concentrations that cause bioactivity into real-world exposures, in other words, in vitro–in vivo extrapolation (IVI...

Certified water filters can be a simple and effective way to reduce lead in tap water. These filters can be especially helpful when individuals or communities have concerns about household lead exposure. Sometimes, organizations such as water utilities (or local health department...

Lake Erie has been re-experiencing excessive nutrient loading (i.e., eutrophication) during recent decades, the causes and consequences of which remain incomplete (Scavia et al., 2014; Sinclair et al., 2023; Watson et al., 2016). Our general understanding is that increased runoff...

The Scout 2008 version 1.0 statistical software package has been updated from past DOS and Windows versions to provide classical and robust univariate and multivariate graphical and statistical methods that are not typically available in commercial or freeware statistical softwar...

During a combined sewer overflow (CSO) event, the capacity of a sewer system is exceeded, and untreated sewage, wastewater, and stormwater are released into nearby water bodies. CSOs occur in urban areas due to heavy precipitation, which is expected to occur more frequently and a...

Satellite constellations often launch platforms over several years, increasing observational frequency and capturing additional, potentially more extreme, events. Consequently, reported changes in satellite-derived data may inadvertently capture variations in observational freque...

Environmental health concerns over per- and polyfluoroalkyl substances (PFAS) have prompted public health laboratories to pursue monitoring studies determining PFAS occurrences. Select laboratories have begun implementing non-targeted analysis (NTA) methods to address the dispari...

Background Ethylene oxide (EtO) is a known carcinogen, with general population exposure primarily from air pollution and smoking. EtO can also form internally via ethylene (ET) oxidation, which originates from both environmental sources and endogenous processes like lipid peroxid...

Inorganic mercury salts (iHg) are mercury compounds that lack carbon–hydrogen bonds. Exposure to iHg is associated with toxic effects, primarily shown in animal studies, yet the lack of cross-species toxicokinetic models has limited our ability to assess human health r...

On outdoor surfaces, grime is an important substrate for the deposition and reactive loss of semivolatile and particulate bound pollutants. A previously unexplored source of grime reactivity is environmentally persistent free radicals (EPFRs), which are precursors to reactive oxy...