The Ins and Outs of Per- and Polyfluoroalkyl Substances in the Great Lakes: The Role of Atmospheric Deposition

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(21), P. 9303 - 9313

Published: May 16, 2024

As part of the Integrated Atmospheric Deposition Network, precipitation (n = 207) and air 60) from five sites water samples 87) all Great Lakes were collected in 2021–2023 analyzed for 41 per- polyfluoroalkyl substances (PFAS). These measurements combined with other available data to estimate mass budget four representative compounds, PFBA, PFBS, PFOS, PFOA basin. The median Σ41PFAS concentrations across ranged between 2.4 4.5 ng/L. concentration lake was highest Lake Ontario (11 ng/L) lowest Superior (1.3 ng/L). Cleveland at 410 pg/m3 Sleeping Bear Dunes 146 pg/m3. net transfer flows generally negative Superior, Michigan, Huron positive Erie Ontario, indicating that three most northern lakes are accumulating PFAS two eliminating PFAS. deposition is an important source PFAS, particularly Superior.

Language: Английский

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A Simple and Sensitive Method for Simultaneous Analysis of 58 Neutral and Ionic PFAS Using UPLC-MS/MS

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(4), P. 308 - 314

Published: March 11, 2024

Analysis of neutral and ionic per- polyfluoroalkyl substances (PFAS) required two discrete techniques- with methods based on gas chromatography–mass spectrometry (GC-MS) for the former ultrahigh performance liquid chromatography-tandem mass (UPLC-MS/MS) latter. In this study, we developed a method simultaneous analysis 58 PFAS in environmental samples, obviating need distinct extraction instrumental methods. The UPLC-MS/MS was optimized validated sensitivity, selectivity, linearity, precision, accuracy. detection limits fluorotelomer alcohols (FTOHs) ranged from 0.08 to 0.50 pg column. Select including food packaging, indoor dust, roadside soil, polyurethane foam, carpet, consumer products, were analyzed. highest concentrations phosphates (Σ6PAPs, 650 ± 910 ng/g) sulfonates (Σ4FTSs, 36 51 found whereas Σ5FTOHs (81 69 carpet. Emerging PFAS, F-53B, ADONA, Gen-X, at sub ng/g concentrations. Hydrogen-substituted polyfluorocarboxylates (H-PFCAs), such as 7H-PFHpA, up 4 dust. This can expedite precursors, FTOHs, PAPs, FTSs along legacy iPFAS samples.

Language: Английский

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A review of sample collection and analytical methods for detecting per- and polyfluoroalkyl substances in indoor and outdoor air

Chemosphere, Journal Year: 2024, Volume and Issue: 358, P. 142129 - 142129

Published: April 26, 2024

Per- and polyfluoroalkyl substances (PFAS) are a unique class of chemicals synthesized to aid in industrial processes, fire-fighting products, benefit consumer products such as clothing, cosmetics, textiles, carpets, coatings. The widespread use PFAS their strong carbon-fluorine bonds has led ubiquitous presence throughout the world. Airborne transport atmosphere also contributed environmental pollution. Due potential human exposure concerns some PFAS, research extensively focused on water, soil, organismal detection, but air become an area growing concern. Methods measure polar various matrices have been established, while investigation nonpolar is still its early development. This literature review aims present last two decades characterizing outdoor indoor air, focusing active passive sampling analytical methods. classes targeted detected samples include fluorotelomer alcohols (FTOHs), perfluoroalkane sulfonamides (FASAs), sulfonamido ethanols (FASEs), perfluorinated carboxylic acids (PFCAs), sulfonic (PFSAs). Although manufacturing perfluorooctanoic acid (PFOA) perfluorooctane (PFOS) largely phased out, these often samples. Additionally, recent estimates indicate that there thousands likely not currently monitored Advances methods needed fully characterize atmospheric PFAS.

Language: Английский

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Fate, distribution, and transport dynamics of Per- and Polyfluoroalkyl Substances (PFASs) in the environment

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 371, P. 123163 - 123163

Published: Nov. 7, 2024

Language: Английский

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Legacy and Emerging Organic Pollutants in Indoor and Outdoor Environments in Africa: Contamination Levels, Health Risks, and Analytical Techniques

Emerging contaminants, Journal Year: 2025, Volume and Issue: unknown, P. 100468 - 100468

Published: Jan. 1, 2025

Language: Английский

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Characterizing Seasonal Patterns, Gas-Particle Partitioning, and Potential Sources of Airborne Per- and Polyfluoroalkyl Substances in Japan

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

The global ubiquity of perfluoroalkyl and polyfluoroalkyl substances (PFAS) highlights the important role atmospheric transport. This study monitored 47 PFAS, including acids (PFAAs), emerging precursors PFAAs (pre-PFAAs), in seasonal ambient air Japan between 2022 2023, quantifying 38 them collected samples. profiles were dominated by 6:2 fluorotelomer alcohol, perfluorobutanesulfonic acid, perfluorobutanoic with median levels 245, 117, 78.0 pg m-3, respectively. Pre-PFAS carboxylic (PFCAs) exhibited relatively higher concentrations warm seasons, whereas sulfonic (PFSAs) more abundant cold seasons. Particle-bound fractions PFCAs carbon number (Cn) ≤ 13 PFSAs Cn 8 found at lower than previous reports. Additionally, an odd-even pattern gas-particle distribution ratio was observed for PFCAs, values odd-numbered compounds their even-numbered counterparts. Using positive matrix factorization analysis, aqueous film-forming foam-related activities, waste stream emissions, fluoropolymer manufacturing proposed as potential major sources studied areas, relative contribution quantified. These findings enhance our understanding behavior PFAS facilitate development tailored mitigation strategies.

Language: Английский

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Bioindicators for monitoring atmospheric perfluorinated compounds: review of occurrences, transport, fate and analytical protocols

Environmental Chemistry, Journal Year: 2025, Volume and Issue: 22(2)

Published: March 24, 2025

Environmental context Perfluorinated compounds are emerging organic contaminants recently detected in various environmental matrices and remain largely unregulated. Among these matrices, air is the least studied one due to analytical challenges. This review explores trends analysing perfluorinated with use of bioindicators highlights future research needs address existing gaps detection monitoring. Abstract (PFCs) persistent pollutants extensive industrial applications, including firefighting foams, nonstick coatings textiles. Their contamination widespread their resistance degradation long-range atmospheric transport, leading presence ecosystems. PFCs pose significant hazards, bioaccumulation, endocrine disruption, hormonal imbalances potential carcinogenic effects. Despite ubiquity compartments, studies limited provides first comprehensive analysis biomonitoring atmosphere using bioindicators. The databases consulted for include Web Science, Scopus, ScienceDirect, PubMed Google Scholar. By examining literature, we identify key gaps, highlight limitations underscore need standardised methods improve monitoring accuracy.

Language: Английский

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Multiomic Landscape of Primary Hypothyroidism Induced by Subchronic Exposure to Low-Dose Novel PFOS Substitute OBS in Human and Murine Models

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Sodium p-perfluorous nonenoxybenzenesulfonate (OBS) as a novel surrogate for perfluorooctanesulfonate (PFOS) has been extensively utilized in industrial manufacturing and daily life. However, studies on OBS-induced environmental health risks of obstructive biosynthesis are currently limited, particularly the risk thyroid diseases. Following construction vivo (mouse) vitro (normal human primary thyrocytes) models subchronic low-dose OBS exposure, we explored thyroid-disrupting effects through multiomics approaches experimental validations. Our results showed that exposure to low doses led hypothyroidism mice, presenting with reduced number functional abnormalities thyrocytes. Further assays confirmed disulfidptosis, newly discovered form programmed cell death, Meanwhile, remarkably suppressed hormone synthesis pathways mouse The charted multiomic landscape mammals revealed toxicity endocrine-disrupting properties OBS, suggesting it is not safe alternative PFOS.

Language: Английский

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Spatiotemporal trends and ecological risk assessment of volatile methylsiloxanes in Tokyo Bay catchment basin, Japan: River water and sewage treatment plant samples

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 975, P. 179292 - 179292

Published: April 5, 2025

Language: Английский

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Assessing Analyte Recovery Values and Reporting Standards for Monitoring Exposure to Airborne Semi-Volatile Organic Compounds

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126342 - 126342

Published: April 1, 2025

Language: Английский

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