A5049285722- Toxic Organic Pollutants Impact
- Per- and polyfluoroalkyl substances research
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Effects and risks of endocrine disrupting chemicals
- Water Treatment and Disinfection
- Urban Stormwater Management Solutions
- Environmental Justice and Health Disparities
- Water Quality and Resources Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Atmospheric Ozone and Climate
- Marine and coastal ecosystems
- Thermal Radiation and Cooling Technologies
- Soil and Water Nutrient Dynamics
- Smart Parking Systems Research
- Fecal contamination and water quality
- Food Industry and Aquatic Biology
- Urban Heat Island Mitigation
- Water Quality Monitoring and Analysis
- Analytical chemistry methods development
- Water Quality and Pollution Assessment
- Polymer crystallization and properties
- Groundwater and Isotope Geochemistry
- Quantum Electrodynamics and Casimir Effect
Carnegie Mellon University
2022-2025
Stony Brook University
2020-2022
Colorado School of Mines
2018-2022
United States Geological Survey
2020
University of Rhode Island
2014-2019
Ministry of the Environment, Conservation and Parks
2017
Rhode Island Department of Environmental Management
2017
Organophosphate esters (OPEs) have been found in remote environments at unexpectedly high concentrations, but very few measurements of OPE concentrations seawater are available, and none available subsurface seawater. In this study, passive polyethylene samplers (PEs) deployed on deep-water moorings the Fram Strait surface waters Canadian Arctic lakes coastal sites were analyzed for a suite common OPEs. Total OPEs ( ∑11OPE) dominated by chlorinated OPEs, ranged from 6.3 to 440 pg/L....
Understanding how exposure to aqueous film-forming foam (AFFF)-impacted drinking water translates bioaccumulation of per- and polyfluoroalkyl substances (PFASs) is essential assess health risks. To investigate spatial variability PFAS in communities near an AFFF source zone, blood serum was collected 2018 from 220 adult residents El Paso County (Colorado), as were raw samples several wells. C6 C8 perfluoroalkyl sulfonates (PFSAs) predominant water. PFASs most elevated the district nearest...
Determining health risks associated with per-/polyfluoroalkyl substances (PFASs) is a highly complex problem requiring massive efforts for scientists, risk assessors, and regulators. Among the most poorly understood pressing questions relative importance of pre-PFAAs, which are PFASs that degrade to persistent perfluoroalkyl acids. How many vast number existing pre-PFAAs relevant direct human exposure, what predominant exposure pathways? What evidence provided by biomonitoring studies?...
Polyethylene passive samplers (PEs) were used to measure concentrations of gaseous and dissolved polycyclic aromatic hydrocarbons (PAHs) in the air water throughout lower Great Lakes during summer fall 2011. Atmospheric Σ15PAH ranged from 2.1 ng/m3 Cape Vincent (NY) 76.4 downtown Cleveland (OH). Aqueous Σ18PAH 2.4 ng/L at an offshore Lake Erie site 30.4 Sheffield Gaseous PAH correlated strongly with population within 3–40 km sampling depending on compound considered, suggesting that urban...
Per- and polyfluoroalkyl substances (PFASs) are widespread in the blood of general human population, their bioaccumulation is considerable scientific regulatory interest. PFAS exposure resulting from aqueous film-forming foam (AFFF) ingestion poorly understood due to complexity AFFF mixtures presence polyfluorinated that may undergo metabolic transformation. C57BL/6 mice were dosed with an primarily containing electrochemically fluorinated PFASs for 10 days, followed by a 6 day depuration....
Polyethylene passive sampling was performed to quantify gaseous and freely dissolved polychlorinated biphenyls (PCBs) in the air water of Lakes Erie Ontario during 2011-2012. In view differing physical characteristics impacts historical contamination by PCBs within these lakes, spatial variation PCB concentrations air-water exchange across lakes may be expected. Both displayed statistically similar aqueous atmospheric concentrations. Total 29 ranged from 1.5 pg L(-1) open lake Lake (site...
Safe drinking water at the point-of-use (tapwater, TW) is a United States public health priority. Multiple lines of evidence were used to evaluate potential human concerns 482 organics and 19 inorganics in TW from 13 (7 supply, 6 private well self-supply) home 12 (public supply) workplace locations 11 states. Only uranium (61.9 μg L–1, well) exceeded National Primary Drinking Water Regulation maximum contaminant level (MCL: 30 L–1). Lead was detected 23 samples (MCL goal: zero). Seventy-five...
Abstract The Arctic Ocean is known to be contaminated by various persistent organic pollutants (POPs). Fram Strait, the only deepwater passage (from Atlantic Ocean), represents an unquantified gateway for POPs fluxes into and out of Arctic. Polyethylene passive samplers were deployed in vertical profiles Strait air surface water Canadian Archipelago determine concentrations, profiles, mass dissolved polychlorinated biphenyls (PCBs) organochlorine pesticides. In higher concentrations ΣPCBs...
Local point sources (mainly firefighting stations) and diffuse contributed to the exposure of PFAS marine food web near Longyearbyen on Svalbard. Certain PFOS substitutes showed a bioaccumulation potential in invertebrates.
Humans are primary drivers of environmental contamination worldwide, including in drinking-water resources. In the United States (US), federal and state agencies regulate monitor public-supply drinking water while private-supply monitoring is rare; current lack directly comparable information on contaminant-mixture exposures risks between private- public-supplies undermines tapwater (TW) consumer decision-making.We compared residential point-of-use TW at Cape Cod, Massachusetts, where both...
Per/polyfluoroalkyl substances (PFASs) are ubiquitous, highly persistent anthropogenic chemicals that bioaccumulate and biomagnify in aquatic food webs associated with adverse health effects, including liver kidney diseases, cancers, immunosuppression. We investigated the accumulation of PFASs a marine apex predator, white shark (
Per- and polyfluoroalkyl substances (PFASs) are often present in complex mixtures at trace levels environmental samples, posing difficulties for analytical chemists. Ion mobility offers highly replicable identifiers, enabling the use of community-based libraries PFAS annotation nontargeted analysis. Currently, limited software exists to leverage capabilities liquid chromatography ion high-resolution mass spectrometry (LC-IM-HRMS) FluoroMatch IM is a free vendor-neutral open-source tool rapid...
Polycyclic musks (PCMs) are synthetic fragrance compounds used in personal care products and household cleaners. Previous studies have indicated that PCMs introduced to aquatic environments via wastewater river discharge. Polyethylene passive samplers (PEs) were deployed air water during winter 2011 summer 2012 investigate the role of population centers as sources these contaminants Great Lakes determine whether lakes acting volatilization. Average gaseous Σ5PCM ranged from below detection...
Organic flame retardants (OFRs) such as polybrominated diphenyl ethers (PBDEs) and novel halogenated (NHFRs) are ubiquitous, persistent, bioaccumulative contaminants that have been used in consumer goods to slow combustion. In this study, polyethylene passive samplers (PEs) were deployed throughout the lower Great Lakes (Lake Erie Lake Ontario) measure OFRs air water, calculate air–water exchange fluxes, investigate spatial trends. Dissolved Σ12BDE was greatest Ontario near Toronto (18...
Aqueous film-forming foams (AFFFs) are complex per- and polyfluoroalkyl substance (PFAS)-containing mixtures used extensively as fire suppressants. AFFF-impacted groundwater surface water have contaminated drinking with PFASs in many communities, raising concerns about health effects from exposures. As individual been identified immune hazards, the immunotoxicity of PFAS is also a concern. Adult female male C57BL/6 mice were given commercial AFFF formulation for 10 days via gavage;...
A pilot-scale expanded target assessment of mixtures inorganic and organic contaminants in point-of-consumption drinking water (tapwater, TW) was conducted Puerto Rico (PR) to continue inform TW exposures corresponding estimations cumulative human-health risks across the US. In August 2018, a spatial synoptic pilot than 524 37 chemicals 14 locations (7 home; 7 commercial) PR. follow-up 3-day temporal variability December 2018 at two (1 home, 1 included daily pre- post-flush samples....