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Showing 1 to 9 of 9 for “"PFCA"”.
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Vývoj separačních metod stanovení perfluoralkylových karboxylových kyselin ve vzorcích životního prostředí
… perfluoralkylových karboxylových kyselin (PFCA, C5 - C12) ve vzorcích říčních vod metodou plynové chromatografie. Nejprve byla vyvinuta a optimalizována rychlá derivatizční reakce účinkem chlormravenčanu isobutylnatého, při které jsou jednotlivé perfluoralkylkarboxylové kyseliny převedeny …
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An uncertainty-focused approach to modeling the atmospheric chemistry of persistent organic pollutants
… (PAHs) and perfluorocarboxylic acids (PFCAs). PAHs are by-products of burning and therefore have important anthropogenic sources in the combustion of fuels, biomass, etc. PFCAs and their atmospheric precursors are used in making firefighting foams, non-stick coatings, and other …
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Atmospheric Distribution and Seasonality of Airborne Polyfluorinated Compounds: Spatial and Temporal Concentration Variations from Ship-and Land-Based Measurements in Northern Germany, the Atlantic Ocean, and Polar Regions
… Einige PFC, vor allem Perfluorcarboxylate (PFCA) und Perfluorsulfonate (PFSA), sind persistent, bioakkumulativ und toxisch. Der atmosphärische Transport und Abbau von neutralen volatilen PFCA und PFSA Vorläufersubstanzen könnte die Existenz der persistenten perfluorierten Säuren in …
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Exploring the heterogeneous uptake of gas-phase PFCAs to the condensed phase
Perfluoroalkyl carboxylic acids (PFCAs) are a class of per- and polyfluoroalkyl substances (PFAS) which are completely fluorinated, accompanied by a carboxylic head functional group. With varying toxic effects on animals, plants, and humans, it has become imperative to understand the fate of these …
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Photochemical processes in engineered aquatic systems for remediation of per- and polyfluoroalkyl substances and algae cultivation
… (PFSAs) and perfluoroalkyl carboxylic acids (PFCAs)) were readily degraded, other structures (e.g., short-chain PFSAs and fluorotelomer sulfonic acids (FTSs)) were more recalcitrant. Furthermore, results show that PFSAs, PFCAs, and FTSs can form as transient intermediates or unreactive …
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Evaluation of hybrid treatment configurations of granular activated carbon and alternative adsorbents for per- and polyfluoroalkyl substances removal from surface water and groundwater
… and short-chain perfluorocarboxylic acids (PFCAs) remained challenging for GAC and FS to remove. The lead-lag column study demonstrated that hybrid configurations were more cost-effective for brackish groundwater and short-chain PFCA removal when compared to a standalone IX column. Lastly, …
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Hydrolysis and Atmospheric Oxidation Reactions of Perfluorinated Carboxylic Acid Precursors
… to the production of perfluorocarboxylic acids (PFCAs), a family of environmental pollutants that does not undergo any further degradation pathways. The compound perfluoro-2-methyl-3-pentanone (PFMP) is a new fire fighting fluid developed by 3M that is designed as a Halon replacement. The …
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Per- and Polyfluoroalkyl Substances (PFAS) in Air, Water, and Soil and Their Impact on Air Quality
… and precipitation (Dec 2025–Mar 2026), found PFCAs dominated both matrices, with short-chain homologues in rainwater (79%) and near-equal distribution in bayou water (47%). Correlation analysis showed chain-length-driven partitioning, except for the PFOA-PFBA anomaly (r=0.859), suggesting a …
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Remediation of per and polyfluoroalkyl substances by pilot-scale applications of advanced water treatment technologies
… chain PFASs and perfluorocarboxylic acids (PFCAs), respectively. Greater adsorption capacity was found for GAC products containing high volumes of transport pores. A subsequent study compared a better performing GAC product evaluated from the prior study against three AER products in a …