Showing 1186-1200 of 1266
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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.
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Ice core record of persistent short‐chain fluorinated alkyl acids: Evidence of the impact from global environmental regulations
Science
5 May 2020 | Geophy. Res. L
Fluorotelomer degradation may contribute to the deposition of PFBA in Arctic ice.
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Incinerators may spread, not break down PFAS
News
28 Apr 2020 | C&EN
New data suggest that commercial incineration of per- and polyfluoroalkyl substances (PFAS) doesn’t break down these hardy chemicals. Instead, it spreads them into surrounding areas.
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Thermal Stability and Decomposition of Perfluoroalkyl Substances on Spent Granular Activated Carbon
Science
28 Apr 2020 | Environ. Sci. & Tech. Letters
The temperature needed to degrade PFCAs thermally increased with the number of perfluorinated carbons.
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Examining NTA performance and potential using fortified and reference house dust as part of EPA's Non-Targeted Analysis Collaborative Trial (ENTACT)
Science
28 Apr 2020 | Anal Bioanal Chem
Precursors to PFOS and PFHxS were found in standard reference material dust (SRM 2585) which is used to determine contaminants in house dust.
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Worldwide bottled water occurrence of emerging contaminants: A review of the recent scientific literature
Science
28 Apr 2020 | J. Hazard. Mater.
A review of available scientific literature concerning PFAS found in packaged water bottles.
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Fluoride‐selective electrode as a tool to evaluate the degradation of PFAS in groundwater: A bench‐scale investigation
Science
27 Apr 2020 | Groundwater Mon. & Rem.
The use of a fluoride‐selective electrode to test for the presence of fluorine in groundwater was found to be a quick but inaccurate tool for the application at field sites.
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Detecting toxic PFAS with a chip-sized sensor
News
22 Apr 2020 | Pacific Northwest National Laboratory (PHYS.org)
The device can provide real time, point-of-use measurement data for PFOS at 0.5 ppt and the research team is working to extend this technology to detect other PFAS including PFOA, PFBA, PFBS, and GenX.
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ITRC releases PFAS technical and regulatory guidance document
News
15 Apr 2020 | Interstate Technology & Regulatory Council
The Interstate Technology & Regulatory Council published a guidance document that provides an in-depth analysis of the complex world of PFAS.