Occurrence of per- and polyfluoroalkyl substances (PFAS) in soil: Sources, fate, and remediation DOI Creative Commons
Yifei Wang, Umar Munir, Qingguo Huang

et al.

Soil & Environmental Health, Journal Year: 2023, Volume and Issue: 1(1), P. 100004 - 100004

Published: March 1, 2023

Per- and polyfluoroalkyl substances (PFAS) are being widely investigated for their distribution remediation in the environment. It is crucial to consider interactions of PFAS between soil other media ecosystem, including air, water, plants, when studying fate transport soil, while few studies have taken such an integrative approach. This review examined potential input from landfill by analyzing both concentration each source mechanisms which a impacted these sources. was found that air (on average 101−2 ​pg/m3) leachates 100-2 ​ng/L) main sources soil. Many factors, as solution pH cations, influence sorption desorption water-soil interface, but no single factor deterministic. The migration plant through root uptake many species, wheat maize, effects vary with different species. levels were associated land-use type. They highest primary exposure sites (10−1-102 ​ng/g), followed secondary (10−1-101 background (10−2-101 legacy PFAS- PFOA (100-1 ​ng/g) PFOS (100-2 most predominant. There promising destructive technologies targeted at thermal treatment ultrasound, still need overcome low efficiency high cost scale up. In meantime, may either be immobilized or removed ex-situ treatment.

Language: Английский

Per- and polyfluoroalkyl substances in the environment DOI Open Access
Marina G. Evich, Mary J. B. Davis, James McCord

et al.

Science, Journal Year: 2022, Volume and Issue: 375(6580)

Published: Feb. 3, 2022

Over the past several years, term PFAS (per- and polyfluoroalkyl substances) has grown to be emblematic of environmental contamination, garnering public, scientific, regulatory concern. are synthesized by two processes, direct fluorination (e.g., electrochemical fluorination) oligomerization fluorotelomerization). More than a megatonne is produced yearly, thousands wind up in end-use products. Atmospheric aqueous fugitive releases during manufacturing, use, disposal have resulted global distribution these compounds. Volatile facilitate long-range transport, commonly followed complex transformation schemes recalcitrant terminal PFAS, which do not degrade under conditions thus migrate through environment accumulate biota multiple pathways. Efforts remediate PFAS-contaminated matrices still their infancy, with much current research targeting drinking water.

Language: Английский

Citations

908
Water Analysis: Emerging Contaminants and Current Issues DOI
Susan D. Richardson, Thomas A. Ternes

Analytical Chemistry, Journal Year: 2017, Volume and Issue: 90(1), P. 398 - 428

Published: Nov. 7, 2017

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTWater Analysis: Emerging Contaminants and Current IssuesSusan D. Richardson*† Thomas A. Ternes‡View Author Information† Department of Chemistry Biochemistry, University South Carolina, Columbia, Carolina 29205, United States‡ Federal Institute Hydrology, Koblenz, D-56068, Germany*E-mail: [email protected]Cite this: Anal. Chem. 2018, 90, 1, 398–428Publication Date (Web):November 7, 2017Publication History Published online30 November 2017Published inissue 2 January 2018https://doi.org/10.1021/acs.analchem.7b04577Copyright © 2017 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views10421Altmetric-Citations381LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InReddit Read OnlinePDF (584 KB) Get e-AlertsSUBJECTS:Anions,Drinking water,Impurities,Pharmaceuticals,Water treatment e-Alerts

Language: Английский

Citations

556
Destruction of Per- and Polyfluoroalkyl Substances (PFAS) with Advanced Reduction Processes (ARPs): A Critical Review DOI
Junkui Cui, Panpan Gao, Yang Deng

et al.

Environmental Science & Technology, Journal Year: 2020, Volume and Issue: 54(7), P. 3752 - 3766

Published: March 12, 2020

Advanced reduction processes (ARPs) have emerged as a promising method for destruction of persistent per- and polyfluoroalkyl substances (PFAS) in water due to the generation short-lived highly reductive hydrated electrons (eaq–). This study provides critical review on mechanisms performance PFAS with eaq–. Unique properties eaq– its different ARP systems, particularly UV/sulfite UV/iodide, are overviewed. Different degradation chemicals, such perfluorooctanoic acid (PFOA), perfluorooctanesulfonate (PFOS), others (e.g., short chain perfluorocarboxylic acids (PFCAs) perfluorosulfonic (PFSAs), polyfluoro dicarboxylic acids, fluorotelomer carboxylic acids), reviewed, discussed, compared. The pathways these chemicals rely heavily upon their head groups. For specific types, fluoroalkyl lengths may also affect patterns. Degradation defluorination efficiencies considerably influenced by solution chemistry parameters operating factors, pH, dose chemical solute (i.e., sulfite or iodide) photoproduction, dissolved oxygen, humic acid, nitrate, temperature. Furthermore, implications state-of-the-art knowledge practical control actions industries discussed priority research needs identified.

Language: Английский

Citations

549
PFAS Exposure Pathways for Humans and Wildlife: A Synthesis of Current Knowledge and Key Gaps in Understanding DOI Open Access
Amila O. De Silva, James M. Armitage, Thomas A. Bruton

et al.

Environmental Toxicology and Chemistry, Journal Year: 2020, Volume and Issue: 40(3), P. 631 - 657

Published: Nov. 17, 2020

Abstract We synthesize current understanding of the magnitudes and methods for assessing human wildlife exposures to poly‐ perfluoroalkyl substances (PFAS). Most exposure assessments have focused on 2 5 legacy PFAS, are typically limited targeted PFAS (up ~30 substances). However, shifts in chemical production occurring rapidly, detecting not kept pace with these changes. Total fluorine measurements complemented by suspect screening using high‐resolution mass spectrometry thus emerging as essential tools assessment. Such enable researchers better understand contributions from precursor compounds that degrade into terminal acids. Available data suggest diet is major pathway some but there large variability across populations compounds. Additional total media fraction unidentified organofluorine needed. Drinking water has been established source contaminated communities. As supplies remediated, general population, dust, personal care products, indoor environments, other sources may be more important. A challenge lack statistically representative population surveys. For wildlife, bioaccumulation processes differ substantially between neutral lipophilic organic compounds, prompting a reevaluation traditional metrics. There evidence both phospholipids proteins important tissue partitioning accumulation PFAS. New mechanistic models being developed will assist risk evaluations. Environ Toxicol Chem 2021;40:631–657. © 2020 SETAC

Language: Английский

Citations

534
Solid waste: An overlooked source of microplastics to the environment DOI Creative Commons

Harmita Golwala,

Xueyao Zhang, Syeed Md Iskander

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 769, P. 144581 - 144581

Published: Jan. 11, 2021

Language: Английский

Citations

269
Review of the fate and transformation of per- and polyfluoroalkyl substances (PFASs) in landfills DOI

Hanna Hamid,

Loretta Y. Li,

John R. Grace

et al.

Environmental Pollution, Journal Year: 2017, Volume and Issue: 235, P. 74 - 84

Published: Dec. 21, 2017

Language: Английский

Citations

266
Worldwide drinking water occurrence and levels of newly-identified perfluoroalkyl and polyfluoroalkyl substances DOI

Hermann A. Kaboré,

Sung Vo Duy,

Gabriel Munoz

et al.

The Science of The Total Environment, Journal Year: 2017, Volume and Issue: 616-617, P. 1089 - 1100

Published: Dec. 23, 2017

Language: Английский

Citations

258
Remediation of poly- and perfluoroalkyl substances (PFAS) contaminated soils – To mobilize or to immobilize or to degrade? DOI
Nanthi Bolan, Binoy Sarkar, Yubo Yan

et al.

Journal of Hazardous Materials, Journal Year: 2020, Volume and Issue: 401, P. 123892 - 123892

Published: Sept. 9, 2020

Language: Английский

Citations

253
Per- and polyfluoroalkyl substances (PFAS) in American Red Cross adult blood donors, 2000–2015 DOI Creative Commons
Geary W. Olsen, David Mair, C. Lange

et al.

Environmental Research, Journal Year: 2017, Volume and Issue: 157, P. 87 - 95

Published: May 17, 2017

In 2015, thirteen per- and polyfluoroalkyl substances (PFAS), including perfluorohexanesulfonate (PFHxS), perfluorooctanesulfonate (PFOS), perfluorooctanoate (PFOA), perfluorononanoate (PFNA), perfluorodecanoate (PFDA) were analyzed in human plasma that collected from a total of 616 American Red Cross male female blood donors (ages 20-69) at 6 regional collection centers. Plasma samples using validated solvent precipitation-isotope dilution direction-liquid chromatography tandem mass spectrometry method. The data conjunction with prior cross-sectional investigations [2000-2001 (n =645), 2006 =600), 2010 =600)] to determine PFAS trends. Age- sex-adjusted geometric mean serum (2000-2001) (2006, 2010, 2015) concentrations (ng/mL) were, respectively: PFHxS (2.3, 1.5, 1.3, 0.9); PFOS (35.1, 14.5, 8.4, 4.3); PFOA (4.7, 3.4, 2.4, 1.1); PFNA (0.6, 1.0, 0.8, 0.4); PFDA (0.2, 0.3, 0.1). percentage decline these 2000-2001 2015 were: (61%); (88%); (77%); (33%); (50%). results indicate continued PFHxS, PFOS, donors. For the remaining measured shorter chain perfluoroalkyls perfluorobutanesulfonate (PFBS) perfluorohexanoate (PFHxA), majority below lower limit quantitation.

Language: Английский

Citations

232
Recently Detected Drinking Water Contaminants: GenX and Other Per‐ and Polyfluoroalkyl Ether Acids DOI Creative Commons
Zachary R. Hopkins, Mei Sun, Jamie C. DeWitt

et al.

American Water Works Association, Journal Year: 2018, Volume and Issue: 110(7), P. 13 - 28

Published: June 14, 2018

For several decades, a common processing aid in the production of fluoropolymers was ammonium salt perfluorooctanoic acid (PFOA). Because PFOA is persistent, bioaccumulative, and toxic, its use are being phased out United States. In 2009, US Environmental Protection Agency stipulated conditions for manufacture commercial GenX, replacement. While GenX produced purposes, form also generated as byproduct during fluoromonomers. The discovery high concentrations related perfluoroalkyl ether acids (PFEAs) Cape Fear River finished drinking water more than 200,000 North Carolina residents required quick action by researchers, regulators, public health officials, laboratories, providers, consulting engineers. Information about sources toxicity well an analytical method detection eight PFEAs presented. GenX/PFEA occurrence removal different treatment processes discussed.

Language: Английский

Citations

227