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For decades, researchers have sought to document injustices, highlight activism, and identify pathways in moving toward environmental justice (EJ). EJ research regarding water has been predominantly focused on drinking water. This project sought to identify and analyze the breadt...

Fine particulate matter (PM2.5) resulting from wildland fire is a significant public health risk in the United States (U.S.). The existing stationary monitoring network and the tools used to alert the public of smoke conditions, such as the Air Quality Index or NowCast, are not o...

Estimating population exposure to particulate matter during wildfires can be difficult because of insufficient monitoring data to capture the spatiotemporal variability of smoke plumes. Chemical transport models (CTMs) and satellite retrievals provide spatiotemporal data that may...

Background: A fluorochemical facility near Fayetteville, North Carolina, emitted per- and polyfluoroalkyl ether acids (PFEAs), a subgroup of per- and polyfluoroalkyl substances (PFAS), to air. Objective: Analyze PFAS in private wells near the facility and in blood from ...

Freshwater ecosystems, including lakes, streams, and wetlands, are responsive to climate change and other natural and anthropogenic stresses. These ecosystems are generally hydrologically connected with one another and with the landscapes around them, integrating changes that occ...

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

Because of natural environmental and faunal differences and scientific perspectives, numerous indices of biological integrity (IBIs) have been developed at local state, and regional scales in the USA. These multiple IBIs, plus different criteria for judging impairment, hinder ri...

Quantifying atmospheric loadings of total phosphorus (TP) to freshwater environments is essential to improve understanding of its fate and transport, and to mitigate the effects of excessive levels in freshwater ecosystems. To date, atmospheric deposition of TP in the U.S. is poo...

Air pollution has been associated with poor health outcomes and continues to be a risk factor for respiratory health in children. While higher particulate matter (PM) levels are associated with increased frequency of symptoms, lower lung function, and increase airway inflammation...

This paper explores the air quality trends across Chicago and the statistical relationships behind this apparent messaging disagreement of the Village Green bench and the local air quality index values. The analysis finds agreement across the two data sources when considering spa...

Tracer flux ratio (TFR) methodology performed at 15 active oil and natural gas production sites in Ohio County, West Virginia sought to quantify downwind emissions on several days in April 2018. In coordination with a production company, sites were randomly selected depending on ...

Air pollution can be a major public health concern in many cities throughout the world, especially elevated concentrations of ambient fine particulate matter (PM2.5).  Exposure to PM2.5 can increase risks for numerous adverse health effects including lung cancer, lower-respi...

This paper reviews the currently used pretreatment methods for microplastics (MPs) analysis in soil and freshwater sediments, primarily sample processing, pretreatment, and characterization methods for MPs analysis. In addition, analytical tools (e.g., lab instruments), MPs chara...

Wildland fire smoke contains hazardous levels of fine particulate matter (PM2.5), a pollutant shown to adversely effect health. Estimating fire attributable PM2.5 concentrations is key to quantifying the impact on air quality and subsequent health burden. This is a challenging pr...

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...

This work serves as the second of a two-part study to improve surface PM2.5 forecasts in the continental U.S. through the integrated use of multisatellite aerosol optical depth (AOD) products (MODIS Terra/Aqua and VIIRS DT/DB), multichemical transport model (CTM) (GEOS-Chem,...

This paper describes the results of a four-day next generation emission measurement (NGEM) demonstration study conducted at a midwestern U.S. chemical facility that uses ethylene oxide (EtO), a hazardous air pollutant, in the production of industrial surfactants. The abstrac...

It has been challenging to analyze inorganic arsenic (iAs) with anion exchange HPLC-Electrospray Ionization-Mass spectrometry (HPLC-ESI-MS), because arsenite (As(III)) is difficult to retain on column and the salts in mobile phase causes ionization suppression of iAs. T...

While high-resolution MS (HRMS) can be used for identification and quantification of novel per- and polyfluorinated alkyl substances (PFAS), low-resolution MS/MS is the more commonly used and affordable approach for routine PFAS monitoring. Of note, perfluoropentanoic acid (PFPeA...

Most studies of the health effects and chemical characterization of the dust resulting from the catastrophic collapse of the World Trade Center on September 11, 2001, have focused on the large inorganic fraction of the particles; however, a few studies have identified mutagens an...

In April of 2018, a two-week measurement campaign was conducted to characterize methane and other gas emissions from 15 unconventional oil and natural gas production sites (well pads targeting shale) operated by Southwestern Energy in Ohio County, West Virginia. The sites were su...

Particulate matter (PM) is a major primary pollutant emitted during wildland fires that has the potential to pose significant health risks to individuals/communities who live and work in areas impacted by smoke events. Limiting exposure is the principal measure available to mitig...

In April of 2018, an optical gas imaging (OGI) and full flow sampler (FFS) emissions measurement study of pneumatic controllers (PCs) at 15 oil and natural gas production sites in West Virginia was conducted. A total of 391 PC systems supporting 66 working wells were found. All w...

Two widely used PM2.5 monitors in the United States (U.S.) designated as federal equivalent methods (FEMs) by the U.S. Environmental Protection Agency were collocated for 15 months in Sarajevo, Bosnia and Herzegovina (BiH) to evaluate their comparability. With differing measureme...

Experimental fenceline sensor pods (SPods) fitted with 30 second duration canister grab sampling (CGS) systems were deployed at a site near chemical facilities in Louisville, KY from June 4, 2018, to January 5, 2020. The objective of the study was to better understand lower cost ...