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Keywords perfluoroalkyl and polyfluoroa...

perfluoroalkyl and polyfluoroalkyl substances

https://read.qxmd.com/read/38535176/white-rot-fungi-as-tools-for-the-bioremediation-of-xenobiotics-a-review
#1
REVIEW
Giselle Torres-Farradá, Sofie Thijs, Francois Rineau, Gilda Guerra, Jaco Vangronsveld
Industrial development has enhanced the release into the environment of large quantities of chemical compounds with high toxicity and limited prospects of degradation. The pollution of soil and water with xenobiotic chemicals has become a major ecological issue; therefore, innovative treatment technologies need to be explored. Fungal bioremediation is a promising technology exploiting their metabolic potential to remove or lower the concentrations of xenobiotics. In particular, white rot fungi (WRF) are unique microorganisms that show high capacities to degrade a wide range of toxic xenobiotic compounds such as synthetic dyes, chlorophenols, polychlorinated biphenyls, organophosphate pesticides, explosives and polycyclic aromatic hydrocarbons (PAHs)...
February 21, 2024: Journal of Fungi (Basel, Switzerland)
https://read.qxmd.com/read/38531439/a-review-of-the-occurrence-and-microbial-transformation-of-per-and-polyfluoroalkyl-substances-pfas-in-aqueous-film-forming-foams-afffs-impacted-environments
#2
REVIEW
Peng-Fei Yan, Sheng Dong, Kurt D Pennell, Natalie L Cápiro
Aqueous film-forming foams (AFFFs) have been extensively used for extinguishing hydrocarbon-fuel fires at military sites, airports, and fire-training areas. Despite being a significant source of per- and polyfluoroalkyl substances (PFAS), our understanding of PFAS occurrence in AFFF formulations and AFFF-impacted environments is limited, as is the impact of microbial transformation on the environment fate of AFFF-derived PFAS. This literature review compiles PFAS concentrations in electrochemical fluorination (ECF)- and fluorotelomer (FT)-based AFFFs and provides an overview of PFAS occurrence in AFFF-impacted environments...
March 24, 2024: Science of the Total Environment
https://read.qxmd.com/read/38531109/evaluating-potential-developmental-toxicity-of-perfluoroalkyl-and-polyfluoroalkyl-substances-in-xenopus-laevis-embryos-and-larvae
#3
JOURNAL ARTICLE
Sigmund J Degitz, Philip P Degoey, Jonathan T Haselman, Jennifer H Olker, Emma H Stacy, Chad Blanksma, Scott Meyer, Kali Z Mattingly, Brett Blackwell, Anne S Opseth, Michael W Hornung
As part of the US Environmental Protection Agency's perfluoroalkyl and polyfluoroalkyl substances (PFAS) Action Plan, the agency is committed to increasing our understanding of the potential ecological effects of PFAS. The objective of these studies was to examine the developmental toxicity of PFAS using the laboratory model amphibian species Xenopus laevis. We had two primary aims: (1) to understand the developmental toxicity of a structurally diverse set of PFAS compounds in developing embryos and (2) to characterize the potential impacts of perfluorooctanesulfonic acid (PFOS), perfluorohexanesulfonic acid (PFHxS), perfluorooctanoic acid (PFOA), and hexafluoropropylene oxide-dimer acid (HFPO-DA a...
March 26, 2024: Journal of Applied Toxicology: JAT
https://read.qxmd.com/read/38525964/impact-of-gestational-exposure-to-individual-and-combined-per-and-polyfluoroalkyl-substances-on-a-placental-structure-and-efficiency-findings-from-the-ma-anshan-birth-cohort
#4
JOURNAL ARTICLE
Hong Gan, Yanan Xing, Juan Tong, Mengjuan Lu, Shuangqin Yan, Kun Huang, Xiaoyan Wu, Shuman Tao, Hui Gao, Yitao Pan, Jiayin Dai, Fangbiao Tao
Prenatal exposure to perfluoroalkyl and polyfluoroalkyl substances (PFASs) is inevitable among pregnant women. Nevertheless, there is a scarcity of research investigating the connections between prenatal PFAS exposure and the placental structure and efficiency. Based on 712 maternal-fetal dyads in the Ma'anshan Birth Cohort, we analyzed associations between individual and mixed PFAS exposure and placental measures. We repeatedly measured 12 PFAS in the maternal serum during pregnancy. Placental weight, scaling exponent, chorionic disc area, and disc eccentricity were used as the outcome variables...
March 25, 2024: Environmental Science & Technology
https://read.qxmd.com/read/38522066/changing-the-structure-of-pfoa-and-pfos-a-chemical-industry-strategy-or-a-solution-to-avoid-thyroid-disrupting-effects
#5
REVIEW
F Coperchini, A Greco, M Rotondi
BACKGROUND: The family of perfluoroalkyl and polyfluoroalkyl substances (PFAS) raised concern for their proven bioaccumulation and persistence in the environment and animals as well as for their hazardous health effects. As a result, new congeners of PFAS have rapidly replaced the so-called "old long-chain PFAS" (mainly PFOA and PFOS), currently out-of-law and banned by most countries. These compounds derive from the original structure of "old long-chain PFAS", by cutting or making little conformational changes to their structure, thus obtaining new molecules with similar industrial applications...
March 24, 2024: Journal of Endocrinological Investigation
https://read.qxmd.com/read/38521272/species-specific-profiles-of-per-and-polyfluoroalkyl-substances-pfas-in-small-coastal-sharks-along-the-south-atlantic-bight-of-the-united-states
#6
JOURNAL ARTICLE
Qaim Mehdi, Emily K Griffin, Juliette Esplugas, Jim Gelsleichter, Ashley S Galloway, Bryan S Frazier, Alina S Timshina, R Dean Grubbs, Keyla Correia, Camden G Camacho, John A Bowden
Per- and polyfluoroalkyl substances (PFAS) have gained widespread commercial use across the globe in various industrial and consumer products, such as textiles, firefighting foams, and surface coating materials. Studies have shown that PFAS exhibit a strong tendency to accumulate within aquatic food webs, primarily due to their high bioaccumulation potential and resistance to degradation. Despite such concerns, their impact on marine predators like sharks remains underexplored. This study aimed to investigate the presence of 34 PFAS in the plasma (n = 315) of four small coastal sharks inhabiting the South Atlantic Bight of the United States (U...
March 21, 2024: Science of the Total Environment
https://read.qxmd.com/read/38521049/plasma-per-and-polyfluoroalkyl-substance-mixtures-during-pregnancy-and-duration-of-breastfeeding-in-the-new-hampshire-birth-cohort-study
#7
JOURNAL ARTICLE
Megan E Romano, Lisa G Gallagher, George Price, Kathryn A Crawford, Rachel Criswell, Emily Baker, Julianne Cook Botelho, Antonia M Calafat, Margaret R Karagas
BACKGROUND: Prior studies suggest that prenatal per- and polyfluoroalkyl substances (PFAS) exposures are associated with shorter breastfeeding duration. Studies assessing PFAS mixtures and populations in North America are sparse. METHODS: We quantified PFAS concentrations in maternal plasma collected during pregnancy in the New Hampshire Birth Cohort Study (2010-2017). Participants completed standardized breastfeeding surveys at regular intervals until weaning (n = 813)...
March 22, 2024: International Journal of Hygiene and Environmental Health
https://read.qxmd.com/read/38518100/quantitative-cross-species-comparison-of-serum-albumin-binding-of-per-and-polyfluoroalkyl-substances-from-five-structural-classes
#8
JOURNAL ARTICLE
Hannah M Starnes, Thomas W Jackson, Kylie D Rock, Scott M Belcher
Per- and polyfluoroalkyl substances (PFAS) are a class of over 8,000 chemicals, many of which are persistent, bioaccumulative, and toxic to humans, livestock, and wildlife. Serum protein binding affinity is instrumental in understanding PFAS toxicity, yet experimental binding data is limited to only a few PFAS congeners. Previously, we demonstrated the usefulness of a high-throughput, in vitro differential scanning fluorimetry assay for determination of relative binding affinities of human serum albumin for 24 PFAS congeners from 6 chemical classes...
March 22, 2024: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://read.qxmd.com/read/38513956/evaluation-of-per-and-polyfluoroalkyl-substances-pfas-in-landfill-liquids-from-pennsylvania-colorado-and-wisconsin
#9
JOURNAL ARTICLE
Yutao Chen, Hekai Zhang, Yalan Liu, John A Bowden, Timothy G Townsend, Helena M Solo-Gabriele
PER: and polyfluoroalkyl substances (PFAS) have been measured in aqueous components within landfills. To date, the majority of these studies have been conducted in Florida. This current study aimed to evaluate PFAS concentrations in aqueous components (leachate, gas condensate, stormwater, and groundwater) from four landfills located outside of Florida, in Pennsylvania, Colorado, and Wisconsin (2 landfills). The Pennsylvania landfill also provided the opportunity to assess a leachate treatment system. Sample analyses were consistent across studies including the measurements of 26 PFAS and physical-chemical parameters...
March 19, 2024: Chemosphere
https://read.qxmd.com/read/38513556/evidence-of-promoting-effects-of-6-2-cl-pfesa-on-hepatocellular-carcinoma-proliferation-in-humans-an-ideal-alternative-for-pfos-in-terms-of-environmental-health
#10
JOURNAL ARTICLE
Jiawei Hong, Keyi Du, Hangbiao Jin, Yuanchen Chen, Yifan Jiang, Weichen Zhang, Diyu Chen, Shusen Zheng, Linping Cao
Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are synthetic chemicals, encompassing compounds like perfluorooctane sulfonate (PFOS), which have widespread applications across various industries, including food packaging and firefighting. In recent years, China has increasingly employed 6:2 Cl-PFESA as an alternative to PFOS. Although the association between PFAS exposure and hepatocellular carcinoma (HCC) has been demonstrated, the underlying mechanisms that promote HCC proliferation are uncleared. Therefore, we aimed to investigate the effects and differences of PFOS and 6:2 Cl-PFESA on HCC proliferation through in vivo and in vitro tumor models...
March 16, 2024: Environment International
https://read.qxmd.com/read/38513531/exploring-the-impact-of-prenatal-perfluoroalkyl-and-polyfluoroalkyl-substances-exposure-on-blood-pressure-in-early-childhood-a-longitudinal-analysis
#11
JOURNAL ARTICLE
Bowen Du, Qianchuo Wang, Zhikang Xu, Hualin Wang, Zhuoyan Li, Yujian Wu, Yiwei Niu, Qianlong Zhang, Xi Zhang, Kun Sun, Jian Wang
Previous research investigating the correlation between prenatal exposure to per- and polyfluoroalkyl substances (PFAS) and subsequent blood pressure (BP) in offspring has yielded limited and contradictory findings. This study was conducted to investigate the potential relationship between maternal PFAS levels during pregnancy and subsequent BP in early childhood. A total of 129 expectant mothers from the Shanghai Birth Cohort were included in the study. Using high-performance liquid chromatography/tandem mass spectrometry, we measured ten PFAS compounds in maternal plasma throughout the pregnancy...
March 20, 2024: Ecotoxicology and Environmental Safety
https://read.qxmd.com/read/38506404/rim-based-binding-of-perfluorinated-acids-to-pillararenes-purifies-water
#12
JOURNAL ARTICLE
Tu-Nan Gao, Si Huang, Rick Nooijen, Yumei Zhu, Gabriele Kociok-Köhn, Tobias Stuerzer, Guanna Li, Harry Bitter, Gert Salentijn, Bo Chen, Fedor M Miloserdov, Han Zuilhof
Per- and polyfluoroalkyl substances (PFAS) pose a rapidly increasing global problem as their widespread use and high stability lead worldwide to water contamination, with significant detrimental health effects.[1] Supramolecular chemistry has been invoked to develop materials geared towards the specific capture of PFAS from water,[2] to reduce the concentration below advisory safety limits (e.g., 70 ng/L for the sum of perfluorooctyl sulfonic acid, PFOS and perfluorooctanoic acid, PFOA). Scale-up and use in natural waters with high PFAS concentrations has hitherto posed a problem...
March 20, 2024: Angewandte Chemie
https://read.qxmd.com/read/38503211/prenatal-exposure-to-poly-perfluoroalkyl-substances-and-risk-for-congenital-heart-disease-in-offspring
#13
JOURNAL ARTICLE
Sainan Li, Chengrong Wang, Chen Yang, Yongyan Chen, Qianhui Cheng, Jufen Liu, Yali Zhang, Lei Jin, Zhiwen Li, Aiguo Ren, Linlin Wang
Congenital heart disease (CHD) is the most prevalent congenital malformation worldwide, and the association between per- and polyfluoroalkyl substances (PFASs) exposure and CHD in population has only received limited study. Therefore, we conducted a multicenter case-control study to explore the associations between prenatal exposure to individual PFASs, and also a PFAS mixture, and CHD risk, including 185 CHDs and 247 controls in China from 2016 to 2021. Thirteen PFASs in maternal plasma were quantified using liquid chromatography-tandem mass spectrometry...
March 13, 2024: Journal of Hazardous Materials
https://read.qxmd.com/read/38501683/per-and-polyfluoroalkyl-substances-in-food-packaging-migration-toxicity-and-management-strategies
#14
JOURNAL ARTICLE
Drake W Phelps, Lindsey V Parkinson, Justin M Boucher, Jane Muncke, Birgit Geueke
PFASs are linked to serious health and environmental concerns. Among their widespread applications, PFASs are known to be used in food packaging and directly contribute to human exposure. However, information about PFASs in food packaging is scattered. Therefore, we systematically map the evidence on PFASs detected in migrates and extracts of food contact materials and provide an overview of available hazard and biomonitoring data. Based on the FCCmigex database, 68 PFASs have been identified in various food contact materials, including paper, plastic, and coated metal, by targeted and untargeted analyses...
March 19, 2024: Environmental Science & Technology
https://read.qxmd.com/read/38501493/per-and-polyfluoroalkyl-substances-in-water-2008-2022-and-fish-2015-2022-in-the-netherlands-spatiotemporal-trends-fingerprints-mass-discharges-sources-and-bioaccumulation-factors
#15
JOURNAL ARTICLE
Michiel T O Jonker
Per- and polyfluoroalkyl substances (PFAS) are persistent, bioaccumulative, and toxic synthetic chemicals of concern, which have been detected in nearly all environmental compartments. The present study provides a data analysis on PFAS concentrations in the Dutch inland and coastal national waters and fish sampled from 2008 to 2022 and 2015 to 2022, respectively. Although the fish database is relatively small, the water database is unique because of its temporal dimension. It appears that PFAS are omnipresent in Dutch water and fish, with relatively small spatial differences in absolute and relative concentrations (fingerprints) and few obvious temporal trends...
March 19, 2024: Environmental Toxicology and Chemistry
https://read.qxmd.com/read/38493862/application-of-electron-beam-technology-to-decompose-per-and-polyfluoroalkyl-substances-in-water
#16
JOURNAL ARTICLE
Kaushik Londhe, Cheng-Shiuan Lee, Slavica Grdanovska, Rachel Smolinski, Noor Hamdan, Carrie McDonough, Charles Cooper, Arjun K Venkatesan
The widespread detection of per- and polyfluoroalkyl substances (PFAS) in environmental compartments across the globe has raised several health concerns. Destructive technologies that aim to transform these recalcitrant PFAS into less toxic, more manageable products, are gaining impetus to address this problem. In this study, a 9 MeV electron beam accelerator was utilized to treat a suite of PFAS (perfluoroalkyl carboxylates: PFCAs, perfluoroalkyl sulfonates, and 6:2 fluorotelomer sulfonate: FTS) at environmentally relevant levels in water under different operating and water quality conditions...
March 15, 2024: Environmental Pollution
https://read.qxmd.com/read/38490606/cutting-edge-technologies-and-relevant-reaction-mechanism-difference-in-treatment-of-long-and-short-chain-per-and-polyfluoroalkyl-substances-a-review
#17
REVIEW
Meng Zhang, Wenbing Wang, Tiantian Gong, Yulin Wu, Guangyao Chen
Per- and polyfluoroalkyl substances (PFAS) are emerging contaminants. Compared with short-chain PFAS, long-chain PFAS are more hazardous. Currently, little attention has been paid to the differences in reaction mechanisms between long-chain and short-chain PFAS. This pressing concern has prompted studies about eliminating PFAS and revealing the mechanism difference. The reaction rate and reaction mechanism of each technology was focused on, including (1) adsorption, (2) ion exchange (IX), (3) membrane filtration, (4) advanced oxidation, (5) biotransformation, (6) novel functional material, and (7) other technologies (e...
March 13, 2024: Chemosphere
https://read.qxmd.com/read/38484959/formation-of-volatile-chlorinated-and-brominated-products-during-low-temperature-thermal-decomposition-of-the-representative-pfas-perfluorohexane-sulfonate-pfhxs-in-the-presence-of-nacl-and-nabr
#18
JOURNAL ARTICLE
Yuwei Zhao, Paul G Koster van Groos, Nikita Thakur, Mark E Fuller, Anthony Soto, Paul B Hatzinger
Per- and polyfluoroalkyl substances (PFAS) are synthetic organofluorine compounds known for their chemical and physical stability as well as their wide range of uses. Some PFAS are widely distributed in the environment, leading to concerns related to both environmental and human health. High temperature thermal treatment (i.e., incineration) has been utilized for PFAS treatment, but this requires significant infrastructure and energy, prompting interest in lower temperature approaches that may still lead to efficient destruction...
March 12, 2024: Environmental Pollution
https://read.qxmd.com/read/38470924/resistivity-detection-of-perfluoroalkyl-substances-with-fluorous-polyaniline-in-an-electrical-lateral-flow-sensor
#19
JOURNAL ARTICLE
Sohyun Park, Collette T Gordon, Timothy M Swager
Perfluoroalkyl substances (PFAS), known as "forever chemicals," are a growing concern in the sphere of human and environmental health. In response, rapid, reproducible, and inexpensive methods for PFAS detection in the environment and home water supplies are needed. We have developed a simple and inexpensive perfluoroalkyl acid detection method based on an electrically read lateral flow assay (e-LFA). Our method employs a fluorous surfactant formulation with undoped polyaniline (F-PANI) fabricated to create test lines for the lateral flow assay...
March 19, 2024: Proceedings of the National Academy of Sciences of the United States of America
https://read.qxmd.com/read/38467569/a-porphyrinic-metal-organic-framework-with-cooperative-adsorption-domains-for-pfas-removal-from-water
#20
JOURNAL ARTICLE
Ying Zhang, Ke Kong, Qiao Wu, Tiantian Ma, Jun Liang, Ruihu Wang
The removal of toxic poly- and perfluoroalkyl substances (PFAS) as persistent pollutants from wastewater is imperative but challenging for water remediation. Many adsorbents including activated carbon, biochar, and clay minerals have been investigated for PFAS removal, but most of these materials are faced with high cost or/and low efficiency. The use of metal-organic frameworks (MOFs) as sorbents is attractive for efficient removal of PFAS due to their tailor-made structures and high surface areas. Herein, we synthesized, characterized a water stable Zr-based porphyrinic MOF (PCN-224) with cooperative adsorption domains, and demonstrated its excellent capture performance toward perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS) and perfluorobutane sulfonate (PFBS)...
March 11, 2024: ChemSusChem
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