National Assessment of PFAS in Landfill Leachate in China: Non-Negligible Ultrashort-Chain Components and Socioeconomic Impacts DOI
Tianyu Chen, Xiaosong He,

Qiurui Zhang

et al.

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

Published: May 20, 2025

The persistent leaching of per- and polyfluoroalkyl substances (PFAS) from landfills poses significant environmental risks, particularly to surrounding water systems. However, information regarding the occurrence fate PFAS in across country is limited. Here we investigated distribution profiles sources 60 landfill leachate 31 provinces mainland China, showing total levels ∑PFAS 3.05 × 103 1.58 105 ng/L. Structural equation modeling revealed that socioeconomic conditions directly influenced residue leachate. Furthermore, these conditions, conjunction with climatic factors, chemical composition leachate, thereby indirectly affecting PFAS. estimated emission flux China was 419 kg/year, ultrashort-chain congeners as predominant, omnipresent congeners, accounting for 37%. Our study first provided comprehensive evidence demonstrate were important which would help understand ecological risks emerging PFAS, especially eventually promoting conduction effective monitoring pollution control strategies

Language: Английский

Per- and Polyfluoroalkyl Substances (PFAS) in Consumer Products: An Overview of the Occurrence, Migration, and Exposure Assessment DOI Creative Commons
Yang Yang, Jin Wang,

Shali Tang

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(5), P. 994 - 994

Published: Feb. 21, 2025

Per- and polyfluoroalkyl substances (PFASs) have been widely used in the production of consumer products globally due to excellent water oil resistance anti-fouling properties. The multiple toxic effects some PFASs also pose a threat human health ecosystem, frequent use certain increased risk exposure PFASs. More data on occurrence, concentration, migration is urgently needed address possible risks posed by products. This paper reviews PFAS concentrations found, characteristics known, arising from several types over last five years. considered here include food contact materials, textiles, disposable personal hygiene influence different factors process these are summarized discussed. Additionally, main approaches models assessment evaluated summarized. Current challenges future research prospects this field discussed with view providing guidance for regulation

Language: Английский

Citations

3
Per- and Poly-Fluoroalkyl Substances, and Organophosphate Flame Retardants in the Upper Yangtze River: Occurrence, Spatiotemporal Distribution, and Risk Assessment DOI Creative Commons
Wen Sun,

Zhiyou Fu,

Yueyue Liu

et al.

Toxics, Journal Year: 2025, Volume and Issue: 13(2), P. 116 - 116

Published: Feb. 1, 2025

Contaminants of Emerging Concern (CECs), including per- and polyfluoroalkyl substances (PFASs) organophosphate flame retardants (OPFRs), have raised global concerns due to their persistence, bioaccumulation potential, toxicity. This study presents a comprehensive investigation the occurrence, spatiotemporal distribution, potential sources, ecological human health risks associated with 18 PFASs 9 OPFRs in surface waters upper Yangtze River, China. The water samples were collected from main stream five major tributaries (Min, Jinsha, Tuo, Jialing, Wu Rivers) 2022 2023. total concentration ranged 16.07 927.19 ng/L, 17.36 190.42 respectively, consistently higher observed compared tributaries. Ultra-short-chain (e.g., TFMS) halogenated TCPP) predominant compounds, likely originating industrial discharges, wastewater effluents, other anthropogenic sources. Ecological risk assessments indicated low-to-moderate at most sampling sites, near discharge points. Human evaluations suggested negligible non-carcinogenic but identified carcinogenic OPFR exposure for adults specific locations, particularly Leshan city. highlights importance understanding fate impacts provides valuable insights developing targeted pollution control strategies management measures.

Language: Английский

Citations

0
Review on the sources, distribution and treatment of per- and polyfluoroalkyl substances in global groundwater DOI
Hui Zhang,

Huichao Xu,

Bing Qin

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: 275, P. 121387 - 121387

Published: March 12, 2025

Language: Английский

Citations

0
Per- and Polyfluoroalkyl Ether Acid (PFEA) Concentrations in Indoor Dust are Higher in Homes Closer to a Fluorochemical Manufacturing Facility DOI

Susan P. Proctor,

Jane A. Hoppin, Sharon Zhang

et al.

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

Published: March 31, 2025

Concentrations of 48 per- and polyfluoroalkyl substances (PFAS) were measured in settled dust samples from 65 homes GenX Exposure Study participants residing near a fluorochemical manufacturing facility North Carolina. Eight PFAS [perfluoro(3,5-dioxahexanoic) acid (aka PFO2HxA), perfluoro-2-(perfluoromethoxy)propanoic (PMPA), perfluoro-2-ethoxypropanoic (PEPA), 6:2 fluorotelomer phosphate diester (6:2 diPAP), 6:2/8:2 (6:2/8:2 perfluoropropanoic (PFPrA), perfluorodecanesulfonic (PFDS), 2-(N-ethyl-perfluorooctanesulfonamido)acetic (N-EtFOSAA)] detected >90% the samples. Dust concentrations six ether acids (PFEAs) produced at (PEPA, PMPA, perfluoro-2-methoxyacetic (PFMOAA), PFO2HxA, hexafluoropropylene oxide dimer (HFPO-DA aka GenX), ethanesulfonic acid, 2-[1-[difluoro(1,2,2,2-tetrafluoroethoxy)methyl]-1,2,2,2- tetrafluoroethoxy]-1,1,2,2-tetrafluoro- (Nafion byproduct 2) significantly negatively associated with home distance facility. Homes closer to had higher summed mass 12 targeted PFEAs (∑12PFEAs) but not ∑48PFAS. Trifluoroacetic (TFA), an ultrashort chain PFAS, three diPAPs (8:2/6:2 diPAP, 8:2 diPAP) major contributors ∑48PFAS, these compounds did show relationships distance. Based on our previous findings associating well water human serum, current indicate could be important exposure source.

Language: Английский

Citations

0
Anthropogenic PFAS or Natural Products? Natural Products Cause Overestimation of C2–C5 Perfluoroalkyl Carboxylic Acid Levels DOI

Zhile Pan,

S. Li,

Qiyu Zhao

et al.

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

Published: April 30, 2025

The increasing environmental concentrations of C2-C5 perfluoroalkyl carboxylic acids (PFCAs) have raised concerns about their global threat. However, analytical interference has been reported to cause overestimation PFCA concentrations. Recently, we discovered that a human metabolite, γ-carboxyethyl hydroxychroman, caused the perfluoropentanoic acid (PFPeA) concentration by 454 times due its similar retention time and ion pair mass with those PFPeA in low-resolution spectrometry. Using this mechanism, developed semitargeted screening method identify all possible interferents PFCAs surface water, groundwater, wastewater, soil, fish, serum samples. Nine were discovered, resulting 2.18-454 overestimate concentration. Through 289 samples, most recognized as natural products, possibly originating from metabolism. Adjustment mobile phase acidic or use pentafluorophenyl column can eliminate interferences. Retrospective against both 41 studies 16 countries significant public data repository revealed prevalence interferents. Our findings highlighted necessity re-evaluate subsequently migration, transformation, bioconcentration properties accurately understand significance.

Language: Английский

Citations

0
National Assessment of PFAS in Landfill Leachate in China: Non-Negligible Ultrashort-Chain Components and Socioeconomic Impacts DOI
Tianyu Chen, Xiaosong He,

Qiurui Zhang

et al.

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

Published: May 20, 2025

The persistent leaching of per- and polyfluoroalkyl substances (PFAS) from landfills poses significant environmental risks, particularly to surrounding water systems. However, information regarding the occurrence fate PFAS in across country is limited. Here we investigated distribution profiles sources 60 landfill leachate 31 provinces mainland China, showing total levels ∑PFAS 3.05 × 103 1.58 105 ng/L. Structural equation modeling revealed that socioeconomic conditions directly influenced residue leachate. Furthermore, these conditions, conjunction with climatic factors, chemical composition leachate, thereby indirectly affecting PFAS. estimated emission flux China was 419 kg/year, ultrashort-chain congeners as predominant, omnipresent congeners, accounting for 37%. Our study first provided comprehensive evidence demonstrate were important which would help understand ecological risks emerging PFAS, especially eventually promoting conduction effective monitoring pollution control strategies

Language: Английский

Citations

0