Perfluorinated chemicals are widely used in waterproof and greaseproof paper coatings, stain repellants, and a host of industrial applications. It is also persistent in the environment and may pose long-term health risks. Perfluorooctane sulfonate (PFOS) and perfluorooctanic acid (PFOA) have been ...
Partitioning of PFASs between PM and dissolved phases was dependent on the carbon chain length and end functional groups. Isomer profiles of PFOA and PFOS in the snow were in agreement with the signature of the historical 3M electrochemical fluorination (ECF) products, suggesting that the ECF ...
PFOSPFOASoil amendmentsPhytotoxicityCropsVegetablesPurpose of Review Per- and polyfluoroalkyl substances (PFAS) are a family of > 4700 recalcitrant compounds, many of which are ubiquitous in the environment. This review aims to (1) identify PFAS sources and fate processes relevant to agricultural ...
Among the PFASs, perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) that are detected frequently in the environment, have been given more attention than other PFASs. Wang et al., 2014a, Wang et al., 2014b and Lu et al. (2015) detected high contents of PFOA and PFOS in...
of PFASs in human sera reflects the complexity of exposure sources but source identification can be confounded by differences in toxicokinetics affecting uptake, distribution, and elimination. Common PFASs, such as perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS) and their precursors ...
In the past, cases of PCDD/F and PCB contamination exceeding limits in food from animal origin (eggs, meat or milk) were mainly caused by industrially produced feed. But in the last decade, exceedances of EU limit values were discovered more frequently f
Samples were analysed using the isotope dilution technique with liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS).#The mean lower bound (LB) sum of four PFAS (∑4 PFAS) concentrations (perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (...
The most abundant PFASs in water were PFBS (1.4–55 ng/L), PFBA (1.0–23 ng/L), PFOS (1.5–24 ng/L) and PFOA (2.0–21 ng/L). In the tributaries, PFNA concentrations ranged from 1.2 to 87.1 ng/L except in the May 2013 samples of two tributaries, which reached ...
In this chapter, a method of source identification using a GIS-based approach that was developed and demonstrated for the mitigation of diffuse water pollution by PFCs was introduced. Furthermore, the spatial distribution of PFOS and PFOA in the basin of Tokyo Bay was predicted using the land-...
While the median concentrations of groundwater PFAAs were several ng/L, the maximum concentrations of perfluorooctane sulfonate (PFOS, 990 ng/L), perfluorooctanoate (PFOA, 1800 ng/L) and perfluorononanoate (PFNA, 620 ng/L) in groundwater were several times higher than those of ...