Showing 691-705 of 2294
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Occurrence of perfluoroalkyl substances in canned tuna and their impact on food safety
Science
16 Jan 2024 | Food Control
The study highlights the potential risk of food contamination from PFAS, particularly in canned tuna, emphasizing concerns about their toxicity as endocrine disruptors, immunosuppressants, and carcinogens, with detected PFOS and PFNA levels below the established Tolerable Weekly Intake for the average Italian consumer but posing a potential concern for high consumers due to multiple sources of PFAS intake.
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Tree barks for retrospective measurement and source appointment of airborne perfluoroalkyl and polyfluoroalkyl substances
Science
16 Jan 2024 | Environ. Pollut.
Tree bark was found to be a valuable bioindicator for assessing airborne PFAS pollution, offering a long-term perspective on historical PFAS emissions and allowing for the characterization and tracking of sources, as demonstrated in a study of eight cities in southern Jiangsu Province, China.
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Evaluating the toxicokinetics of some metabolites of a C6 polyfluorinated compound, 6: 2 fluorotelomer alcohol in pregnant and nonpregnant rats after oral exposure to the parent compound
Science
16 Jan 2024 | FCT
Following oral exposure, both pregnant and nonpregnant rats exhibited potential biopersistence of 6:2 fluorotelomer alcohol (6:2 FTOH) and its metabolites, particularly 5:3 fluorotelomer carboxylic acid (5:3A), highlighting the need for additional research on human health implications.
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The Cost of Freeing Drinking Water from ‘Forever Chemicals’
News
15 Jan 2024 | Undark
The U.S. EPA's upcoming standard setting a maximum contaminant level of 4 parts per trillion for PFAS in drinking water is prompting utilities like the Greater Augusta Utility District in Maine to gear up for costly updates, raising concerns about the effectiveness, health impacts, and economic burden of the stringent regulation.
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Per/Polyfluoroalkyl Substances (PFASs) in a Marine Apex Predator (White Shark, Carcharodon carcharias) in the Northwest Atlantic Ocean
Science
14 Jan 2024 | ACS Environmental Au
This study highlighted the accumulation of PFAS in plasma and muscle tissue of white sharks in the Northwest Atlantic Ocean far from pollution sources and noted some geographical differences in PFAS body burdens that may be due to differences in the diet among these distinct shark populations.
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GreenScreen Certification shows packaging is free from PFAS
News
13 Jan 2024 | New Hope Network
Green Screen for Safer Chemicals, which operates the certification program, examines the chemistry of single-use and reusable packaging products.
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Maternal serum concentrations of per- and polyfluoroalkyl substances and childhood acute lymphoblastic leukemia
Science
13 Jan 2024 | JNCI
Maternal exposure to certain PFAS during pregnancy, particularly MeFOSAA, is associated with an increased risk of childhood acute lymphoblastic leukemia, with notable connections to elevated levels of PFOS, suggesting a potential link between these environmental chemicals and the development of the most common childhood cancer.
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Health-Ade hit with class action lawsuit claiming its kombucha contains PFAS
News
12 Jan 2024 | Reuters
Alanna Morton, a New York resident, filed the lawsuit on Tuesday in Manhattan federal court, claiming the company misleadingly marketed and advertised its kombucha as a “health” product even though it tested positive for dangerously high levels of PFAS.
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EPA finalizes new rules for companies producing toxic PFAS chemicals
News
11 Jan 2024 | WHYY
Companies must now notify the EPA if they want to resume the production of certain PFAS chemicals.
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Passive Sampler Derived Profiles and Mass Flows of Perfluorinated Alkyl Substances (PFASs) across the Fram Strait in the North Atlantic
Science
10 Jan 2024 | Environ. Technol. Lett.
PFAS were found at different depths across the Fram Strait, showing long-range marine transport and suggesting that PFAS in the Arctic are governed by a feedback loop between the Atlantic and Arctic oceans as well as atmospheric transport.
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EPA Takes Steps to Limit the Use of Certain PFAS
Policy
10 Jan 2024
The U.S. Environmental Protection Agency will implement a rule under the Toxic Substances Control Act requiring companies to notify and obtain approval from the EPA before manufacturing, importing, or processing more than 300 PFAS listed on the TSCA Inventory, even if they are labeled as "inactive."
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Toxicity Assessment of Mixed Exposure of Nine Perfluoroalkyl Substances at Concentrations Relevant to Daily Intake
Science
10 Jan 2024 | Toxics
This study exposed mice to a mixture of PFAS at levels equivalent to estimated daily human intake, revealing that even low concentrations of PFAS caused liver tissue changes and altered gene expression related to metabolism and cancer, emphasizing the need for thorough toxicity assessments of these persistent environmental contaminants.
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Association of prenatal exposure to perfluorinated and polyfluoroalkyl substances with childhood neurodevelopment: A systematic review and meta-analysis
Science
10 Jan 2024 | Ecotoxicol Environ Saf
A meta-analysis on prenatal exposure to PFAS suggests a sex-specific relationship, revealing that PFOS, PFOA, and PFHxS are associated with decreased performance IQ in boys but PFOS was linked to increased performance IQ in girls, while PFAS are linked to executive function impairments in children without a significant association with behavioral difficulties.
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PFAS found in almost 1,000 products sold in Maine, so far
News
4 Jan 2024 | Portland Press Herald
From shampoo to school supplies, dog treats to dishware, the brand names that admit to using forever chemicals are ubiquitous.
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Binding of Per- and Polyfluoroalkyl Substances (PFAS) to Serum Proteins: Implications for Toxicokinetics in Humans
Science
3 Jan 2024 | Environ Sci Technol
PFAS binding to major blood serum proteins is thought to affect toxicity, transport, and half-lives in the body. This study found shorter-chain PFAS showing a stronger binding to human serum albumin and longer-chain PFAS displaying a greater affinity for globulins, emphasizing the significance of understanding these interactions for more precise assessments of PFAS impact on human health in epidemiological studies.