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Showing 1 to 20 of 25 for “"Perfluorooctanoic acid"”.
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Impacts of perfluorooctanoic acid on porcine oocyte health and competence
… negative effects to oocytes and somatic cells. Perfluorooctanoic acid (PFOA) is a PFAS that is of rising concern to human and animal health which is detected both in Iowa drinking water and human biological samples. PFOA is known to interact with albumin, a protein constituting over 50% of the …
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A Review of Perfluorooctanoic Acid Carcinogenicity and Application to Human Risk
Perfluorooctanoic acid (PFOA) is a synthetic organic chemical that consists of an 8 carbon alkyl chain with a terminal carboxyl group in which the carbon-hydrogen bonds have been replaced with carbon-fluorine bonds except at the terminal carboxyl end. This perfluoralkyl carboxylate is a …
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Sorption of a branched nonylphenol isomer and perfluorooctanoic acid on geosorbents and carbon nanotubes
… organic surfactants, both nonylphenol (NP) and perfluorooctanoic acid (PFOA) are toxic and ubiquitous in the environment. Their sorption on soils and sediments is of importance for their fate and transport in the environment. Especially in China, there is still a lack of consolidated knowledge …
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Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in an Aquatic Ecosystem - Distribution and Fate
Perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS) belong to the family of perfluorinated surfactants (PFSs). They are widely distributed and persistent in the environment. For over 50 years, they have been used in numerous applications including paper and textile treatment, production …
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Accumulation of perfluorooctanoic acid in intestine and lung tissues and its effect on gene expression across multiple pathways
Perfluorooctanoic acid (PFOA) a most common Per- and polyfluoroalkyl substances (PFAS) is a ubiquitous and persistent environmental pollutant. Humans are exposed to it via drinking water, food and airborne dust particulates. Due to its stable nature and slow biological clearance, it remains for …
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Investigating mechanisms of ovotoxicity of Perfluorooctanoic acid and Zearalenone exposure and the influence of altered metabolic status on ovarian function
… enhance ovarian sensitivity to the ovotoxicants perfluorooctanoic acid (PFOA) and zearalenone (ZEN) was investigated. The rationale for this hypothesis was based upon similar metabolic alterations including hyperinsulinemia between obesity and heat stress in females. A study to evaluate …
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Photocatalytic Degradation of Perfluorooctanoic Acid in Water by Free and Immobilised ZnO, g-C3N4 and Their Composite under UV and Visible Light Irradiation
Perfluorooctanoic acid (PFOA) is among perfluoroalkyl and polyfluoroalkyl substances (PFAS) that is widely detected in the environment. ZnO and graphitic carbon nitride are among the most economical semiconductors which have not been widely used for PFOA decomposition. Therefore, ZnO could be an …
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Studium toxicity PFAS s využitím řas
… that are banned PFOS (Perfluorooctanesulfonic acid), PFOA (Perfluorooctanoic acid) and PFHxS (Perfluorohexanesulfonic acid) and for two substances that are still on the market GenX (HFPO-DA, Hexafluoropropylene oxide dimer acid) and PFHxA (Undecanfluorohexanoic acid). The toxicity of these …
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Towards understanding the fate of perfluoroalkyl compounds (PFCs) within urban environments: implications for human exposure.
Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) have been detected across the globe in a variety of media. The toxicity of these compounds and other precursors has led to concern about human exposure. The purpose of this thesis is to investigate the presence of perfluoroalkyl …
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Acetylene Functionalized Photocatalytic COFs for PFAS Adsorption and Degradation
… as photocatalysts to absorb and photodegrade Perfluorooctanoic Acid (PFOA). Photodegradation experiment results indicate that the Porphyrin-COF has the highest efficiency for PFOA adsorption and degradation, with over 80% PFOA adsorbed and degraded within 3 hours of irradiation.
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Removal of Per- and Poly-fluoroalkyl Substances (PFAS) from Water: A Computational Approach
… targeted redox pathways. Mechanistic analysis of perfluorooctanoic acid (PFOA) degradation on Fe⁰ surfaces indicates substantially reduced activation barriers, with successive defluorination emerging as the most kinetically favorable pathway. Complementary ML models developed for PFAS detection …
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Epigenetic toxicity of PFOA in HepG2 cells and its role in lipid metabolism
Perfluorooctanoic acid (PFOA), a man-made stable perfluoroalkyl acid is used widely in the process of synthesizing fluoropolymers for the manufacturing of various daily products such as Teflon. PFOA is extremely persistent in the environment and can be detected in many organisms including humans. …
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Evaluation of Contaminant Removal Through Soil Aquifer Treatment by a Lab Scale Soil Column Experiment Including a Trace Contaminant Spike Test
… but were not degraded. A few compounds, notably perfluorooctanoic acid (PFOA), showed no retardation or degradation.
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Navigating the Unregulated: A Multi-Tiered Public Health Risk Assessment of PFAS and N-DBPs Utilizing Unregulated Contaminant Monitoring Rule Data
… indicate that while long-chain PFAS (e.g., Perfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS), and Perfluorodecanoic acid (PFDA)) contribute to non-carcinogenic risk, the short-chain Perfluorohexane sulfonic acid (PFHxS) exhibited a Hazard Quotient (HQ) that exceeded the safety …
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A Computational Approach to Efficient Electrode Material Design for Electrochemical Oxidation of PFAS
… of the oxidation mechanism of EAOP, focusing on perfluorooctanoic acid (PFOA) as a model contaminant. Through quantum mechanical simulations, the initial steps of EAOP, mainly the decarboxylation and chain-shortening reactions, are systematically explored. The effects of surface termination, PFOA …
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Synthesis and Characterization of Wholly Aromatic, Water-Soluble Polyimides and Poly(amic acid)s Towards Fire Suppression Foams
… compounds (PFCs) like perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), which exhibit toxicity, bioaccumulation, and persistence in the environment resulting in the presence of fluorosurfactant chemicals in environments either through direct or secondary exposure via …
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Transport of Per- and Polyfluoroalkyl Substances (PFAS) at a Managed Aquifer Recharge Site
… SRC is examined in this study: perfluorobutanoic acid (PFBA), perfluorobutane sulfonic acid (PFBS), perfluoropentanoic acid (PFPeA), perfluorohexanoic acid (PFHxA), perfluorohexane sulfonic acid (PFHxS), perfluoroheptanoic acid (PFHpA), and perfluorooctanoic acid (PFOA). Among these PFAS, five are …
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Developing Commercially Scalable Iron and Titanium Metal-Organic Frameworks for Gas Storage and Water Purification
… method developed utilizes the addition of fatty acids during MOF synthesis in order to induce and engineer hierarchal porosity within PCN-250(Fe3O). The resulting Hierarchally Porous MOFs (HP-MOF) exhibited completely different mesoporosity in size, volume, and position. Furthermore, the …
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Identification of Metabolic Markers as Potential Early Predictors of PFAS- Induced Immunotoxicity
… studies reveal that legacy long-chain PFAS (perfluorooctanoic acid, PFOA, and perfluorooctanesulfonic acid, PFOS) suppress both the T-cell-dependent (TDAR) and T-cell-independent antibody responses (TIAR). Previous studies have demonstrated that exposure to PFAS is associated not only with …
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Interactions of Environmental Pollutants with Human Gut Bacteria
… The fluorinated organic compounds bisphenol AF, perfluorooctanoic acid (PFOA) and perfluorononanoic acid (PFNA) were bioaccumulated, while boscalid, propiconazole, tributyl phosphate and triphenyl phosphate showed both interaction types depending on the bacterial strain. PFOA and PFNA belong to …
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