Occurrence and potential ecological risks of PFAS in Pampulha Lake, Brazil, a UNESCO world heritage site

The Science of The Total Environment, Год журнала: 2024, Номер 948, С. 174586 - 174586

Опубликована: Июль 11, 2024

Язык: Английский

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Unveiling Priority Emerging PFAS in Taihu Lake Using Integrated Nontarget Screening, Target Analysis, and Risk Characterization

Environmental Science & Technology, Год журнала: 2024, Номер 58(42), С. 18980 - 18991

Опубликована: Окт. 11, 2024

Amidst tightening regulations, the proliferation of next-generation per- and polyfluoroalkyl substances (PFAS) necessitates a deeper understanding their environmental fate potential risks. Here, we conducted comprehensive assessment PFAS in water sediment Taihu Lake, incorporating both nontarget target screening, seasonal geographical variation analysis, risk prioritization. A total 58 from 13 classes were identified, revealing complex contamination. In addition to short-chain perfluoroalkyl carboxylates (PFCAs) sulfonates (PFSAs), bis(trifluoromethanesulfonyl)imide (Ntf2) perfluoro-2,5-dimethyl-3,6-dioxo-heptanoic acid (C7 HFPO-TA) exhibited relatively high concentrations water, with median values 21.7 5.72 ng/L, respectively. Seasonal analysis revealed elevated levels C7 HFPO-TA, Ntf2, perfluorohexanoic (PFHxA) northeastern areas, suggesting transport via diversion project. Multicriteria prioritization identified four priority (Ntf2, PFHxA, perfluorooctanoic (PFOA)) two (hexafluoropropylene oxide dimer (HFPO-DA) PFHxA) sediment. Overall, this study Ntf2 HFPO-TA as underscoring urgent necessity evaluating risks associated these emerging PFAS.

Язык: 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, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

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Distributions and partitioning of airborne Per- and Polyfluoroalkyl Substances (PFAS) in urban atmosphere of Northern New Jersey

The Science of The Total Environment, Год журнала: 2025, Номер 970, С. 179037 - 179037

Опубликована: Март 1, 2025

Язык: Английский

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Research Progress in Current and Emerging Issues of PFASs’ Global Impact: Long-Term Health Effects and Governance of Food Systems

Foods, Год журнала: 2025, Номер 14(6), С. 958 - 958

Опубликована: Март 11, 2025

Per- and polyfluoroalkyl substances (PFASs) are found everywhere, including food, cosmetics, pharmaceuticals. This review introduces PFASs comprehensively, discussing their nature identifying interconnection with microplastics impacts on public health the environment. The human cost of decades delay, cover-ups, mismanagement plastic waste is outlined briefly explained. Following that, long-term effects critically assessed. Risk assessment then reviewed, mentioning different tools models. Scientific research in United States America analyzed, taking into consideration Center for Disease Control (CDC)'s PFAS Medical Studies Guidelines. impact activities studies around world have focused levels food products dietary intake countries such as China, European countries, USA Australia. Moreover, drinking water regard to risks, mitigation, regulatory needs, account chemical contaminants safety. Finally, briefings specific regions discussed, referring Australia, Vietnam, Canada, Europe, (USA), South America, Africa. crisis a multifaceted issue, exacerbated by mismanagement, it discussed context applying following problem-solving analytical tools: Domino Effect Model accident causation, Swiss Cheese Theory Model, Ishikawa Fish Bone Root Cause Analysis. Last but not least, PFASs' Sustainable Development Goals (SDGs) 2030 rigorously discussed.

Язык: Английский

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

Environmental Chemistry, Год журнала: 2025, Номер 22(2)

Опубликована: Март 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.

Язык: Английский

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Sorption and mechanisms of legacy and emerging per- and polyfluoroalkyl substances (PFASs) on different particle size fractions of marine sediments

Environmental Research, Год журнала: 2025, Номер unknown, С. 121643 - 121643

Опубликована: Апрель 1, 2025

Язык: Английский

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HFPO-DA and Other PFAS in Air Downwind of a Fluoropolymer Production Plant in the Netherlands: Measurements and Modeling

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Emissions of historical fluorinated processing aids used in fluoropolymer production are known to have contributed significantly environmental levels persistent perfluoroalkyl acids (PFAAs). Less is about emissions contemporary and the efficacy technology contain them. To address this, we investigated occurrence hexafluoropropylene oxide dimer acid (HFPO-DA) other per- polyfluoroalkyl substances (PFAS) airborne PM10 near a plant Netherlands. The 20-week high-volume air sampling campaign coincided with installation emission abatement systems. HFPO-DA ranged from below detection limits 98.66 pg m-3 when wind came plant, decreased maximum 12.21 postabatement. Lagrangian dispersion modeling using FLEXPART revealed good concordance between measured modeled concentrations (Pearson's r = 0.83, p ≤ 0.05, Wilmott's d 0.71, mean absolute error 3.66 m-3), providing further evidence that point source. Modeling also suggested could undergo long-range atmospheric transport detectable predicted up several thousand kilometers away. Besides HFPO-DA, aid 6:2 fluorotelomer sulfonate suspected polymerization byproducts, hydrogen-substituted carboxylic acids, were observed, highlighting complex mixture PFAS emitted by plant.

Язык: Английский

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Per- and polyfluoroalkyl substances (PFAS) in drinking water systems in the lower Yangtze River: source, fate, and health risk assessment

Environmental Geochemistry and Health, Год журнала: 2025, Номер 47(6)

Опубликована: Май 5, 2025

Язык: Английский

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Fate of ‘forever chemicals’ in the global cryosphere

Earth-Science Reviews, Год журнала: 2024, Номер 259, С. 104973 - 104973

Опубликована: Ноя. 7, 2024

Язык: Английский

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