Showing 601-615 of 820
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The short-chain perfluorinated compounds PFBS, PFHxS, PFBA and PFHxA, disrupt human mesenchymal stem cell self-renewal and adipogenic differentiation
Science
25 Dec 2019 | J Environ Sci (China).
PFBS, PFHxS, PFBA, and PFHxA were found to be cyto- and potentially developmentally toxic in human cells.
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Phytotoxicity induced by perfluorooctanoic acid and perfluorooctane sulfonate via metabolomics
Science
25 Dec 2019 | J Haz. Mat.
PFOS was found to disrupt lettuce's ability to photosynthesize.
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Behavioural effects and bioconcentration of per- and polyfluoroalkyl substances (PFASs) in zebrafish (Danio rerio) embryos
Science
25 Dec 2019 | Chemosphere
PFAS exposure significantly disrupted zebrafish development.
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Some Chemicals Used as Solvents and in Polymer Manufacture
Science
25 Dec 2019
A review of epidemiological evidence, animal bioassays, and mechanistic and other relevant data to determine the carcinogenic hazard to humans of environmental or occupational exposure to PFAS.
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Per- and polyfluoroalkyl substances (PFASs) modify lung surfactant function T and pro-inflammatory responses in human bronchial epithelial cells
Science
25 Dec 2019 | Tox. in Vitro
PFAS exposure associated with acute respiratory problems and airway infections.
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Profiles of Emerging and Legacy Per-/Polyfluoroalkyl Substances in Matched Serum and Semen Samples: New Implications for Human Semen Quality
Science
25 Dec 2019 | Environ. Health Perspect.
Exposure to 6:2 Cl-PFESA and other PFAS associated with poor semen quality.
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Researchers find high levels of PFAS chemicals in rainwater in United States
News
18 Dec 2019 | The Weather Channel
Most of the samples had PFAS concentrations of less than 1 ng/l, or 1 ppt, but several were about 4 ng/l. The highest total concentration was nearly 5.5 ng/l in a sample from Massachusetts. For drinking water, some states have proposed setting the level at which some type of official action is required at 2 nanograms per liter.
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[IATP Blog] Maine’s plan to address “forever chemicals” polluting farms, water and food
News
13 Dec 2019
Virtually all sludge has tested positive for PFOA and/or PFOS, generally two to three times the State’s screening level of 50 ppt, with some results as high as 20 times this level.
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How PFAS negotiations fell apart
News
13 Dec 2019 | E&E News
Before Democrats managed to secure provisions to address a class of toxic chemicals in an annual defense measure, negotiations fell apart at the hands of their own members... "The American Chemistry Council probably has something to do with it," Rep. Jared Huffman (D-Calif.) told reporters.
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DuPont made billions polluting tap water with PFAS; will now make more cleaning it up
News
12 Dec 2019 | EWG News
DuPont announced on Wednesday it will purchase Desalitech Ltd., a manufacturer of closed-circuit reverse osmosis technology. Reverse osmosis is one of the most expensive water filter technologies on the market, but it can remove many fluorinated chemicals, known as PFAS.
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[Peer-review] Draft NTP Technical Reports on Toxicology and Carcinogenesis Studies of HMB and PFOA
Events
12 Dec 2019
NTP is holding a peer-review of draft Technical Reports on toxicology and carcinogenesis studies of HMB and PFOA and will hold a webcast on Dec. 12, 2019 at 10 AM Eastern (Registration is required). Written comments are due on Nov. 20, 2019. Oral comment registration deadline is Dec. 3, 2019.
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Altered expression and activity of phase I and II biotransformation enzymes in human liver cells by perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS)
Science
10 Dec 2019 | Toxicology
PFOA and PFOS found to inhibit the body's ability to breakdown and absorb nutrients.
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Indoor exposure to per- and polyfluoroalkyl substances (PFAS) in the childcare environment
Science
10 Dec 2019 | Environ. Poll.
Dust samples were found to contain high concentrations of neutral FTOHs while sleeping mats contained FOSAs and FOSEs.
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Subacute dermal toxicity of perfluoroalkyl carboxylic acids: comparison with different carbon-chain lengths in human skin equivalents and systemic effects of perfluoroheptanoic acid in Sprague Dawley rats
Science
10 Dec 2019 | Arch. Toxicol.
PFCA found to have adverse effects on major organs with systemic dermal exposure in high concentrations.
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Bioaccumulation and human exposure of perfluoroalkyl acids (PFAAs) in vegetables from the largest vegetable production base of China
Science
10 Dec 2019 | Environ Int
PFAS found to bioaccumulate in vegetables leading to increased amounts in preschool-aged children.