396575

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Impact of humic acid on the photoreductive degradation of perfluorooctane sulfonate (PFOS) by UV/Iodide process.

Zhuyu Sun et al.

Water research, 127, 50-58 (2017-10-17)

Iodide photolysis under UV illumination affords an effective method to produce hydrated electrons (e

Stability of Individual Maillard Reaction Products in the Presence of the Human Colonic Microbiota.

Michael Hellwig et al.

Journal of agricultural and food chemistry, 63(30), 6723-6730 (2015-07-18)

Maillard reaction products (MRPs) are taken up in substantial amounts with the daily diet, but the majority are not transported across the intestinal epithelium. The aim of this study was to obtain first insights into the stability of dietary MRPs

Synthesis and evaluation of molecularly imprinted polymers with binary functional monomers for the selective removal of perfluorooctanesulfonic acid and perfluorooctanoic acid.

Fengmei Cao et al.

Journal of chromatography. A, 1516, 42-53 (2017-08-22)

This work describes a novel method for the synthesis of molecularly imprinted polymers (MIPs) using 2-(trifluoromethyl) acrylic acid (TFMAA) and 4-vinyl pyridine (4-Vpy) as binary functional monomers, perfluorooctanoic acid (PFOA) as template, and ethyleneglycol dimethacrylate (EGDMA) as cross-linker in the

LC-MS/MS measurements of urinary guanidinoacetic acid and creatine: Method optimization by deleting derivatization step.

Rucheton Benoit et al.

Clinica chimica acta; international journal of clinical chemistry, 493, 148-155 (2019-03-13)

Cerebral Creatine deficiency syndromes (CCDS) include three hereditary diseases affecting the metabolism of creatine (Cr): arginine glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency and disorders of creatine transporter. These pathologies cause a brain creatine deficiency responsible of non-specific neurological impairments with

Metabolization of the Advanced Glycation End Product N-ε-Carboxymethyllysine (CML) by Different Probiotic E. coli Strains.

Michael Hellwig et al.

Journal of agricultural and food chemistry, 67(7), 1963-1972 (2019-02-01)

N-ε-Carboxymethyllysine (CML) is formed during glycation reactions (synonym, Maillard reaction). CML is degraded by the human colonic microbiota, but nothing is known about the formation of particular metabolites. In the present study, six probiotic E. coli strains were incubated with

Spatiotemporal distribution and mass loadings of perfluoroalkyl substances in the Yangtze River of China.

Chang-Gui Pan et al.

The Science of the total environment, 493, 580-587 (2014-07-02)

A systematic investigation into contamination profiles of eighteen perfluoroalkyl substances (PFASs) in both surface water and sediments of Yangtze River was carried out by using high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) in summer and winter of 2013. The total

Quantitative assessment of organ distribution of dietary protein-bound 13 C-labeled Nɛ -carboxymethyllysine after a chronic oral exposure in mice.

Frédéric J Tessier et al.

Molecular nutrition & food research, 60(11), 2446-2456 (2016-07-10)

Nɛ -Carboxymethyl-lysine (CML) is a prominent advanced glycation end-product which is not only found in vivo but also in food. It is known that a percentage of the dietary CML (dCML) is absorbed into the circulation and only partly excreted

Microwave spectrum of perfluoropentanoic acid.

Pejlovas A, et al.

Chemical Physics Letters, 610, 82-85 (2014)

Alessandra Altomare et al.

Antioxidants (Basel, Switzerland), 9(5) (2020-05-02)

In the present paper, the extracellular antioxidant activity of N-acetyl-cysteine (NAC) is explained by considering its ability to regenerate the free form of albumin Cys34 by breaking the disulfide bond of the cysteinylated form (HSA-Cys). NAC's capability to regenerate albumin

Development of an analytical method for the targeted screening and multi-residue quantification of environmental contaminants in urine by liquid chromatography coupled to high resolution mass spectrometry for evaluation of human exposures.

A Cortéjade et al.

Talanta, 146, 694-706 (2015-12-24)

The aim of this study was to develop an analytical method and contribute to the assessment of the Exposome. Thus, a targeted analysis of a wide range of contaminants in contact with humans on daily routines in urine was developed.

Occurrence of perfluorinated alkyl substances in sediment from estuarine and coastal areas of the East China Sea.

Hong Yan et al.

Environmental science and pollution research international, 22(3), 1662-1669 (2014-04-24)

Perfluorinated alkyl substances (PFAS) have drawn much attention due to their environmental persistence, ubiquitous existence, and bioaccumulation potential. The occurrence and spatial variation of PFAS were investigated through collection of riverine and marine sediments from estuarine and coastal areas of

Quantitative and time-course analysis of microbial degradation of 1H,1H,2H,2H,8H,8H-perfluorododecanol in activated sludge.

Atsushi Arakaki et al.

Applied microbiology and biotechnology, 101(22), 8259-8266 (2017-10-04)

A methylene group in the fluorinated carbon backbone of 1H,1H,2H,2H,8H,8H-perfluorododecanol (degradable telomer fluoroalcohol, DTFA) renders the molecule cleavable by microbial degradation into two fluorinated carboxylic acids. Several biodegradation products of DTFA are known, but their rates of conversion and fates

Screening of Potential PFOS Alternatives To Decrease Liver Bioaccumulation: Experimental and Computational Approaches.

Huiming Cao et al.

Environmental science & technology, 53(5), 2811-2819 (2019-02-09)

Perfluorooctanesulfonate (PFOS) is a persistent organic pollutant with significant bioaccumulation potential in liver tissues. Exposure to PFOS could cause increase of liver weight, induce adenomas of the liver, and cause hepatomegaly. Alternatives of PFOS might be designed and synthesized that

Aerosol synthesis and reactivity of thin oxide shell aluminum nanoparticles via fluorocarboxylic acid functional coating.

Kaplowitz D, et al.

Particle & Particle Systems Characterization, 30(10), 881-887 (2013)

Autocatalytic degradation of perfluorooctanoic acid in a permanganate-ultrasonic system.

Yi-Bo Hu et al.

Water research, 140, 148-157 (2018-04-29)

An autocatalytic system, permanganate-ultrasonic (PM-US) system, was applied to degrade perfluorooctanoic acid (PFOA) in aqueous solutions. After a 120-min ultrasonication, a PM dosage of 6 mM increased the pseudo first-order rate constant (k1) for PFOA decomposition from 3.5 × 10-3 to 13.0 × 10-3 min-1

Discerning the inefficacy of hydroxyl radicals during perfluorooctanoic acid degradation.

Hassan Javed et al.

Chemosphere, 247, 125883-125883 (2020-01-25)

Perfluorooctanoic acid (PFOA) is a recalcitrant contaminant of emerging concern, and there is growing interest in advanced oxidation processes to degrade it. However, there is ambiguity in the literature about the efficacy of hydroxyl radicals (OH) for degrading PFOA. Here

Quantitation of Super Basic Peptides in Biological Matrices by a Generic Perfluoropentanoic Acid-Based Liquid Chromatography-Mass Spectrometry Method.

Jianzhong Wen et al.

Journal of the American Society for Mass Spectrometry, 30(9), 1779-1789 (2019-06-30)

Peptides represent a promising modality for the design of novel therapeutics that can potentially modulate traditionally non-druggable targets. Cell-penetrating peptides (CPPs) and antimicrobial peptides (AMPs) are two large families that are being explored extensively as drug delivery vehicles, imaging reagents

19F, 13C single-and two-bond 2D NMR correlations in perfluoroheptanoic acid.

Ribeiro A

Journal of Fluorine Chemistry, 83(1), 61-66 (1997)

Polar stir bars for isolation and preconcentration of perfluoroalkyl substances from human milk samples prior to UHPLC-MS/MS analysis.

Julia Martín et al.

Bioanalysis, 8(7), 633-647 (2016-03-16)

A new method for the determination of four perfluoroalkyl carboxylic acids (from C5 to C8) and perfluorooctane sulfonate in human milk samples using stir-bar sorptive extraction-ultra-HPLC-MS/MS has been accurately optimized and validated. Polydimethylsiloxane and polyethyleneglycol modified silicone materials were evaluated.

Detailed NMR investigation of cyclodextrin-perfluorinated surfactant interactions in aqueous media.

Mary Jo Weiss-Errico et al.

Journal of hazardous materials, 329, 57-65 (2017-01-26)

Perfluorochemicals (PFCs) are contaminants of serious concern because of their toxicological properties, widespread presence in drinking water sources, and incredible stability in the environment. To assess the potential application of α-, β-, and γ-cyclodextrins for PFC remediation, we investigated their

Phototransformation of perfluorooctane sulfonamide on natural clay minerals: A likely source of short chain perfluorocarboxylic acids.

Kun Lv et al.

Journal of hazardous materials, 392, 122354-122354 (2020-02-26)

In this study, a new phototransformation pathway for perfluorooctane sulfonamide (FOSA) and underlying degradation mechanisms are described. Phototransformation of FOSA in a natural clay mineral (montmorillonite) suspension was compared to that in an aqueous solution. Results showed that the presence

Profiling the decomposition products of perfluorooctane sulfonate (PFOS) irradiated using an electron beam.

Tae-Hun Kim et al.

The Science of the total environment, 631-632, 1295-1303 (2018-05-08)

Perfluorooctane sulfonate (PFOS) has been found in wastewater treatment plants (WWTPs) and in surface water as a result of domestic uses of textiles, electronics, and surfactants. The detection of PFOS in the aqueous environment has been linked to hazardous biological

Phytochemical-Rich Antioxidant Extracts of Vaccinium Vitis-idaea L. Leaves Inhibit the Formation of Toxic Maillard Reaction Products in Food Models.

Ieva Račkauskienė et al.

Journal of food science, 84(12), 3494-3503 (2019-11-19)

Thermal treatment of proteinaceous foods generates heat-induced Maillard reaction substances including toxic advanced glycation end products (AGEs) and heterocyclic amines (HAs). It is known that plant phenolic compounds may influence Maillard reaction. This study investigated the impact of lingonberry leaf

Solubility of perfluoropentanoic acid in supercritical carbon dioxide: measurements and modeling

A Dartiguelongue, et al.

Journal of Chemical and Engineering Data, 61, 3902-3907 (2016)

Microwave spectrum of perfluoropentanoic acid

AM Pejlovas, et.al.

Chemical Physics Letters, 610, 82-85 (2014)

Determination of perfluorinated alkyl acids in corn, popcorn and popcorn bags before and after cooking by focused ultrasound solid-liquid extraction, liquid chromatography and quadrupole-time of flight mass spectrometry.

Cristina Moreta et al.

Journal of chromatography. A, 1355, 211-218 (2014-07-06)

An analytical method is proposed to determine ten perfluorinated alkyl acids (PFAAs) [nine perfluorocarboxylic acids (PFCAs) and perfluorooctane sulfonate (PFOS)] in corn, popcorn and microwave popcorn packaging by focused ultrasound solid-liquid extraction (FUSLE) and ultra high performance liquid chromatography (UHPLC)

New Insights into the Degradation Mechanism of Perfluorooctanoic Acid by Persulfate from Density Functional Theory and Experimental Data.

Yanyan Zhang et al.

Environmental science & technology, 53(15), 8672-8681 (2019-07-11)

Thermally activated persulfate is a promising oxidant for in situ remediation of perfluorooctanoic acid (PFOA), yet a comprehensive understanding of the degradation mechanism is still lacking. In this study, we used density functional theory (DFT) calculations and experimental data to

Quantitation of levodopa and carbidopa in rat plasma by LC?MS/MS: The key role of ion-pairing reversed-phase chromatography

J Chi, et al.

Applied Catalysis. B, Environmental, 1054, 1-9 (2017)

Liquid chromatography quadrupole-Orbitrap mass spectrometry for the simultaneous analysis of advanced glycation end products and protein-derived cross-links in food and biological matrices.

Mahesha M Poojary et al.

Journal of chromatography. A, 1615, 460767-460767 (2019-12-17)

Advanced glycation end products (AGEs) and protein cross-links have been extensively investigated in both food and biomedical fields over the past years. Although there are a few chromatographic and immunological methods for the analysis of selected AGEs, there is no

Tandem derivatization combined with salting-out assisted liquid-liquid microextraction for determination of biothiols in urine by gas chromatography-mass spectrometry.

Chia-Ju Tsai et al.

Journal of chromatography. A, 1524, 29-36 (2017-10-11)

Detection of polar organic compounds (POCs) using gas chromatography (GC) is not straightforward due to high polarity, hydrophilicity, and low volatility of POCs. In this study, we report a tandem microwave-assisted derivatization method combined with salting-out assisted liquid-liquid microextraction (SALLME)

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