Showing 1471-1485 of 1559
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Estimating Environmental Hazard and Risks from Exposure to Per- and Polyfluoroalkyl Substances (PFAS): Outcome of a SETAC Focused Topic Meeting
Science
2 Jun 2020 | Environ. Toxicol. Chem.
A SETAC Focus Topic Meeting and workshop entitled Environmental Risk Assessment of PFAS convened 12-15 August 2019 in Durham, North Carolina, and brought together experts from around the globe to highlight recent advances in research pertinent to evaluating environmental and human health risks from exposures of PFAS.
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Evidence of Air Dispersion: HFPO-DA and PFOA in Ohio and West Virginia Surface Water and Soil near a Fluoropolymer Production Facility
Science
2 Jun 2020 | Environ. Sci. Technol.
Downwind atmospheric transport of PFAS was found to expand the boundary of contaminated areas significantly.
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Subsurface transport potential of perfluoroalkyl acids (PFAAs): Column experiments and modeling
Science
1 Jun 2020 | J. Cont. Hyd.
Models incorporating mass transfer coefficients led to improved prediction of PFAS breakthrough.
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Solvent Suitability for HFPO-DA (“GenX” Parent Acid) in Toxicological Studies
Science
27 May 2020 | ES&T L
GenX was found to degrade in common laboratory solvents suggesting the need for caution when performing or using data from toxicity assessments on it and other closely related PFAS.
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Removal of per- and polyfluoroalkyl substances (PFASs) in a full-scale drinking water treatment plant long-term performance of granular activated carbon (GAC) and influence of flow-rate
Science
27 May 2020 | Water Res.
The results and methods presented in this study give drinking water providers valuable tools for the operation of a full-scale treatment train for the removal of PFAS in contaminated raw water.
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These tiny, self-assembling traps capture PFAS
News
27 May 2020 | University at Buffalo
The iron-based tetrahedral cages capture a subset of PFAS with chains of six or more fluorinated carbon atoms, including perfluorocarboxylic acids, sulfonic acids and fluorotelomers.
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Interactions of perfluorooctanesulfonate (PFOS) and 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) with human serum albumin (HSA): A comparative study
Science
27 May 2020 | Chem. Res. Toxicol.
The stronger binding affinity of 6:2 Cl-PFESA to human blood cells may contribute to its higher bioaccumulation potential than PFOS.
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Integrative omics analyses uncover the mechanism underlying the immunotoxicity of perfluorooctanesulfonate in human lymphocytes
Science
27 May 2020 | Chemosphere
The findings of this study offer insight into the molecular mechanisms underlying the immunotoxicity of PFOS and open the potential of using the identified PFOS-responsive genes and lipids as biomarkers for risk assessment.
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Per- and polyfluoroalkyl substances (PFASs) in blood of captive Siberian tigers in China: Occurrence and association with biochemical parameters
Science
19 May 2020 | Env Poll
Ten PFASs were detected in the blood of captive Siberian tigers, including PFOS alternative 6:2 Cl-PFESA, primarily from the consumption of PFAS-contaminated meat.
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Investigation of Levels of Perfluoroalkyl Substances in Surface Water, Sediment and Fish Tissue in New Jersey, USA
Science
19 May 2020 | Sci of Total Env
PFOS, PFDA, PFUnA, and PFDoA were the predominant PFAS detected in fish tissue with the highest levels downstream of a military facility.
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Challenges in the analytical determination of ultra-short-chain perfluoroalkyl acids and implications for environmental and human health
Science
19 May 2020 | Anal Bioanal Chem
The present review gives an overview of the currently used analytical methods and summarizes the findings regarding potential analytical challenges regarding ultra-short-chain PFAS.
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Webinar highlights: PFAS analysis
News
15 May 2020 | New Food Magazine
Sample preparation and chromatography concepts of non-routine PFAS analyses from multiple matrices have been discussed.
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Ozone layer: Concern grows over threat from replacement chemicals
News
14 May 2020 | BBC News
Canadian researchers, studying ice samples from the Arctic dating back to the 1990s, have found "dramatically" increasing levels of ozone replacements called short chain perfluoroalkyl carboxylic acids (scPFCAs).
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Recent advances in the analysis of per-and polyfluoroalkyl substances (PFAS)—A review
Science
12 May 2020 | ET&I
The existing analytical techniques are summarised (since 1985 till now) for the identification and quantification of PFAS.
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Uptake of perfluorooctane sulfonate (PFOS) by common home-grown vegetable plants and potential risks to human health
Science
11 May 2020
The daily intake rates of PFOS via vegetable consumption were found higher than the tolerable daily intake for children of age 2-6 years as per Food Standards Australia New Zealand.