Showing 3301-3315 of 3866
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Quantitative bias analysis of the association between subclinical thyroid disease and two perfluoroalkyl substances in a single study
Science
25 Dec 2019 | Environ. Res.
A physiologically based pharmacokinetic model was used to quantify bias in a reported PFAS-thyroid association.
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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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Perfluoroalkyl substances and likelihood of stroke in persons with and without diabetes
Science
25 Dec 2019 | Diab Vasc Dis Res.
PFAS exposure was found not to increase the risk of stroke in people with diabetes.
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Federal bill tackles toxic PFAS chemicals ground water but food packaging still a concern
News
19 Dec 2019 | Komo News
Under the new bill, the military will phase out the use of PFAS over three years. Biophysical Chemist Arlene Blum, executive director of the Green Science Policy Institute, says it's a big first step.
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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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U.S. EPA releases new analytical method for PFAS in drinking water
Science
18 Dec 2019 | U.S. EPA
The new validated Method 533 focuses on short chain PFAS, those with carbon chain lengths of 4-12. Using it in combination with existing Method 537.1, both government and private laboratories can now effectively measure 29 PFAS in their drinking water.
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A 'forever chemical' contaminates drinking water near military bases
News
16 Dec 2019 | NBC News
Communities nationwide have found levels of PFAS in their water hundreds, sometimes thousands, of times higher than the level recommended by the EPA.
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Massachusetts regulators issue new standards for toxins
News
15 Dec 2019
Under Massachusetts’ new regulations, polluters must clean up contaminated soil and groundwater if the total concentration of six chemicals in PFAS reaches 20 ppt. The new standards are slated to go into effect Dec. 27.
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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.