Distribution and Risk Assessment of Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) in the South Han River DOI Open Access

In Ja Lee,

Woo Hyun Yoon,

Gwanjo Jeong

et al.

Journal of Environmental Analysis Health and Toxicology, Journal Year: 2024, Volume and Issue: 27(1), P. 29 - 38

Published: March 26, 2024

The aim of this study was to determine the concentrations 24 perfluoroalkyl and polyfluoroalkyl substances (PFAS) in South Han River assess human health risks exposure PFAS through ingestion water same river. Surface samples were collected March, June, September, December, 2023 at seven sampling sites Ten (PFBA, PFPeA, PFHxA, PFHpA, PFOA, PFMPA, PFMBA, PFBS, PFOS, GenX) detected PFBA, PFPeA predominant. highest concentration level river found S1 site, its total ranged from 691 1,021 ng/L. hazard quotient values four (i.e., did not exceed one-tenth World Health Organization’s acceptable level.

Language: Английский

Overview of Per- and Polyfluoroalkyl Substances (PFAS), Their Applications, Sources, and Potential Impacts on Human Health DOI Creative Commons
Zunaira Habib,

Minkyung Song,

Sadaf Ikram

et al.

Pollutants, Journal Year: 2024, Volume and Issue: 4(1), P. 136 - 152

Published: March 6, 2024

Per- and polyfluoroalkyl substances (PFAS) belong to a group of synthetic compounds that have recently raised concerns about human health environmental quality due their great prevalence, degradation resistance, potential toxicity. This review focuses on the applications PFAS effects health. Specific emphasis has been laid (i) application/use PFAS, (ii) sources distribution in diverse compartments, (iii) impact Significant humans are associated with exposure i.e., immunotoxicity, thyroid kidney disorders, cancer, etc. Conclusions obtained from studies demonstrate inadequate evidence should not be used justify delaying risk reduction steps for alternatives. can determined different matrices using both traditional analytical approaches, liquid chromatography coupled mass spectrometry (LC-MS/MS) semi-quantitative passive sampling, advanced methods colorimetric, spectrofluorimetric, electrochemical detection. Traditional costly broadly available, while emerging, cost-effective less sensitive unable meet regulatory limits. There is still significant number performed fully comprehend real contamination by PFAS.

Language: Английский

Citations

19
Sources and Pathways of PFAS Occurrence in Water Sources: Relative Contribution of Land-Applied Biosolids in an Agricultural Dominated Watershed DOI Creative Commons

Lynda Godwin Peter,

Linda Lee

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

Published: Jan. 8, 2025

This study evaluated PFAS occurrence in rural well water and surface relative to land application of biosolids a tile-drained agriculture-dominated watershed. Spatial data were used identify potentially vulnerable wells based on their proximity biosolid-permitted location with respect groundwater flow. Water was collected from 103 private Greater Tippecanoe County Indiana 168 locations within the Region Great Bend Wabash River Overall, results indicate that (∑PFAS ≤ 169.4 ng/L) is more contamination than 15.7 ng/L). Short-chain perfluoroalkyl acids made up 72% ∑PFAS both sources. Nonetheless, long-chain homologues detected frequently (94%) (82%). Hierarchical cluster analysis identified biosolid-applied fields, WTTPs, industrial discharges as sources first-order streams high ∑PFAS. Temporal trends revealed an inverse relationship between streamflow concentrations sites impacted by point vice versa for diffuse sources, thereby providing complementary evidence potential The set did not show distinct spatial trend distance biosolid or characteristics.

Language: Английский

Citations

2
High-throughput Screening of Protein Interactions with Per- and Polyfluoroalkyl Substances (PFAS) Used in Photolithography DOI
Yuexin Cao, Carla A. Ng

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137235 - 137235

Published: Jan. 16, 2025

Language: Английский

Citations

1
Per- and Polyfluoroalkyl Substances (PFAS) in Urbanized Section of the Delaware River Watershed: Risk Assessment and Geographical Distribution DOI Creative Commons
Elham Akbari,

Tanishka Shah,

K. Nazaruk

et al.

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(3)

Published: March 1, 2025

Language: Английский

Citations

1
PFAS River Export Analysis Highlights the Urgent Need for Catchment-Scale Mass Loading Data DOI Creative Commons
Patrick Byrne, William M. Mayes, A. James

et al.

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(3), P. 266 - 272

Published: Feb. 19, 2024

Source apportionment of per- and polyfluoroalkyl substances (PFAS) requires an understanding the mass loading these compounds in river basins. However, there is a lack temporally variable catchment-scale data, meaning identification prioritization sources PFAS to rivers for management interventions can be difficult. Here, we analyze concentrations loads River Mersey provide first robust estimates export European system contribution wastewater treatment works (WwTWs) total export. We estimate annual 68.1 kg report that yield perfluorooctanesulfonic acid (PFOS) perfluorooctanoic (PFOA) catchment among highest recorded globally. Analysis WwTW indicates approximately one-third PFOA emitted from WwTWs potentially stored half PFOS transported by may not originate WwTWs. As governments move toward regulation effluents, our findings highlight complexity source need data. This study strategies reducing focus solely on effluents achieve water quality targets.

Language: Английский

Citations

7
Low-Temperature Mineralization of Fluorotelomers with Diverse Polar Head Groups DOI

Richard J. Monsky,

Yuli Li, K. N. Houk

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(25), P. 17150 - 17157

Published: June 13, 2024

Per- and polyfluoroalkyl substances (PFAS) are persistent environmental pollutants linked to harmful health effects. Currently employed PFAS destruction methods energy-intensive often produce shorter-chain recalcitrant partially fluorinated byproducts. We report the mineralization of five fluorotelomer compounds via a base-mediated degradation using NaOH mild temperatures (120 °C) in mixture DMSO:H2O (8:1 v/v). The studied fluorotelomers have varying polar head groups–carboxylic acids, sulfonic alcohols, phosphonic which most common groups used commercial industrial applications. intermediates byproducts were characterized 1H, 13C, 19F NMR spectroscopy. Density functional theory computations at M06-2X/6-311 + G(2d,p)-SMD-(DMSO) level consistent with observed guided an overall mechanistic hypothesis. Degradation each occurs through similar process, nonfluorinated carbons first carbon cleaved from remaining perfluoroalkyl fragment, degrades previously identified pathways. These findings provide important insight into processes suggest that containing least one C–H bond within or adjacent its fluoroalkyl chain can be degraded under these conditions. Many current use as well generated other candidates for this approach.

Language: Английский

Citations

6
Statewide Surveillance and Mapping of PFAS in Florida Surface Water DOI
Camden G. Camacho,

Alexander Antonison,

Allison Oldnettle

et al.

ACS ES&T Water, Journal Year: 2024, Volume and Issue: 4(10), P. 4343 - 4355

Published: Sept. 19, 2024

Language: Английский

Citations

6
Source identification and distribution of per- and polyfluoroalkyl substances (PFAS) in the freshwater environment of USA DOI
Mohammad Nazmul Ehsan, Mumtahina Riza, Md. Nahid Pervez

et al.

International Journal of Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: July 12, 2024

Language: Английский

Citations

5
Per- and polyfluorinated substances in reservoir water from a metropolitan city in the Guangdong-Hong Kong-Macao Greater Bay Area, China, and their ecological risks DOI Creative Commons

Yiming Ge,

Yi Huang,

Linshen Xie

et al.

Environmental Chemistry and Ecotoxicology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Investigation of Sources of Fluorinated Compounds in Private Water Supplies in an Oil and Gas-Producing Region of Northern West Virginia DOI Creative Commons
Helen G. Siegel, Sara L. Nason, Joshua L. Warren

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(45), P. 17452 - 17464

Published: Nov. 3, 2023

Per- and polyfluoroalkyl substances (PFASs) are a class of toxic organic compounds that have been widely used in consumer applications industrial activities, including oil gas production. We measured PFAS concentrations 45 private wells 8 surface water sources the gas-producing Doddridge, Marshall, Ritchie, Tyler, Wetzel Counties northern West Virginia investigated relationships between potential drinking receptors. All samples 60% sampled contained quantifiable levels at least one targeted compound, four (8%) had above proposed maximum contaminant level (MCL) for perfluorooctanoic acid (PFOA). Individual PFOA perfluorobutanesulfonic exceeded those finished public supplies. Total ranged from nondetect to 36.8 ng/L, with averaging 4-fold greater than groundwater. Semiquantitative, nontargeted analysis showed emergent were potentially higher PFAS. Results multivariate latent variable hierarchical Bayesian model combined insights analyses groundwater chemistry, topographic characteristics, proximity point elucidate predictors wells. Model results reveal (i) an increased vulnerability contamination upland recharge zones, (ii) geochemical controls on transport likely driven by adsorption, (iii) possible influence nearby sources.

Language: Английский

Citations

10