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Showing 1-30 of 50 results for "ultrapur® acids" within Papers
Po-Chang Shih et al.
ACS pharmacology & translational science, 5(6), 400-412 (2022-05-13)
The rampageous transmission of SARS-CoV-2 has been devastatingly impacting human life and public health since late 2019. The waves of pandemic events caused by distinct coronaviruses at present and over the past decades have prompted the need to develop broad-spectrum
Andrew Seen et al.
Chemosphere, 103, 306-312 (2014-02-04)
The graphitised carbon solid phase extraction (SPE) sorbent Envi-Carb has been used to fabricate glass fibre filter- Envi-Carb "sandwich" disks for use as a passive sampler for acid herbicides. Passive sampler uptake of a suite of herbicides, including the phenoxyacetic
Golaleh Sheykhaghaei et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1011, 1-5 (2016-01-09)
In this work, the magnetic molecularly imprinted polymer nanoparticles (MMIP-NPs) for the selective pre-concentration of Tizanidine have been described. The polymer nanoparticles were synthesized by the polymerization of methacrylic acid as a functional monomer, ethylene glycol dimethacrylate as a cross-linker
Kenshi Sankoda et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 79(10), 1853-1859 (2019-07-12)
In this study, photochemical degradation of two emerging pharmaceutical chemicals, mefenamic acid (MF) and triclosan (TCS), was investigated to clarify the role of treated wastewater effluent matrices on their environmental photolysis. Target compounds were individually exposed to simulated sunlight in
Zuo Tong How et al.
Journal of chromatography. A, 1370, 135-146 (2014-12-03)
This paper reports a new analytical method for the analysis of 18 amino acids in natural waters using solid-phase extraction (SPE) followed by liquid chromatography-electrospray tandem mass spectrometry (LC-MS/MS) operated in multiple reaction monitoring mode. Two different preconcentration methods, solid-phase
Jovita M Saquing et al.
Environmental science & technology, 44(3), 1123-1129 (2009-12-31)
Desorption rates of toluene, o-xylene and tetrachloroethene from individual municipal solid waste components [high-density polyethylene (HDPE); poly(vinyl chloride) (PVC); office paper; newsprint; and rabbit food, a model food and yard waste] were determined. Effects of sorbent and sorbate properties, solvent
Iván Conejeros et al.
Developmental and comparative immunology, 52(2), 215-225 (2015-06-01)
Toll-like receptors (TLR) are a family of pattern recognition receptors that sense microbial associated molecular patterns (MAMP) such as microbial membrane components and nucleic acids of bacterial origin. Polymorphonuclear neutrophils (PMN) are the first cell of the innate immune system
Davide Palma et al.
Molecules (Basel, Switzerland), 26(4) (2021-02-13)
Perfluoroalkyl substances (PFAS) represent one of the most recalcitrant class of compounds of emerging concern and their removal from water is a challenging goal. In this study, we investigated the removal efficiency of three selected PFAS from water, namely, perfluorooctanoic
A Bennett et al.
The Journal of nutrition, 129(12), 2236-2238 (1999-11-26)
Boron is required for the growth of vascular plants and embryonic development in fish. The molecular basis of boron's essentiality, however, remains unknown for both. The objective of this study was to determine whether yeast (Saccharomyces cerevisiae) could be used
G Giancane et al.
The journal of physical chemistry. B, 115(50), 14956-14962 (2011-11-11)
A commercial vanadyl 2,9,16,23-tetraphenoxy-29H,31H-phthalocyanine (VOPc) was dissolved in chloroform and spread on ultrapure water subphase in a Langmuir trough. The floating film was thoroughly characterized at the air-water interface by means of the Langmuir isotherm, Brewster angle microscopy, UV-vis reflection
Dan Zhang et al.
Frontiers in plant science, 11, 222-222 (2020-03-27)
Herein, an analytical method was developed for extraction and quantification of benzbromarone and tolfenamic acid in citrus and soil matrices using liquid-liquid extraction followed by liquid chromatography-triple quadrupole-tandem mass spectrometry analysis. The compounds were extracted using 0.1% formic acid in
Dan Zhang et al.
Food chemistry, 237, 1202-1208 (2017-08-03)
A reliable and highly sensitive screening method based on liquid chromatography coupled withtriple-quadrupoleelectrospray tandemmass spectrometry (LC-MS/MS) analysis has been developed for the detection and quantification of three veterinary drugs, including buparvaquone, nystatin, and etomidate impurity B CRS. The tested drugs
Jeongyun Choi et al.
Chemosphere, 125, 139-146 (2014-12-31)
This report describes a novel technology of reusing the wastewater discharged from the display manufacturing industry through an advanced oxidation process (AOP) with a metal-immobilized catalyst and reverse osmosis (RO) in the pilot scale. The reclaimed water generated from the
Olga S Arvaniti et al.
Ultrasonics sonochemistry, 67, 105139-105139 (2020-04-30)
The sonochemical degradation of trimethoprim (TMP), a widely used antibiotic, in various water matrices was investigated. The effect of several parameters, such as initial TMP concentration (0.5-3 mg/L), actual power density (20-60 W/L), initial solution pH (3-10), inorganic ions, humic acid and
Guan-yi Huang et al.
Huan jing ke xue= Huanjing kexue, 30(8), 2402-2407 (2009-10-06)
The degradation of PCB77 in diatomite by microwave-induced catalytic oxidation was studied in a sealed vial, including four effects such as microwave (MV) radiating time, addition of different nano-particle metal oxides, concentration and type of acids and dosage of MnO2.
Dan Zhang et al.
Environmental monitoring and assessment, 188(6), 348-348 (2016-05-15)
A liquid chromatography-electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) method was developed for monitoring and detection of four different drugs, namely acetanilide, pentylenetetrazole, phenacetin, and tetramethrin in porcine muscle, pasteurized milk, and table egg samples. For acetanilide and pentylenetetrazole, the samples
Marcellin Fotsing et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 46(4), 420-425 (2011-03-11)
In the present work, a high capacity anion exchange column was used to efficiently and simultaneously separate traces of oxyhalide disinfection byproducts (DBP) anions and bromide by an ion chromatography system followed by a post-column reaction (PCR). The PCR generates
Ying Yan et al.
Clinical chemistry and laboratory medicine, 55(10), 1517-1522 (2017-04-01)
Potassium is an important serum ion that is frequently assayed in clinical laboratories. Quality assurance requires reference methods; thus, the establishment of a candidate reference method for serum potassium measurements is important. An inductively coupled plasma mass spectrometry (ICP-MS) method
Ying Yan et al.
Clinica chimica acta; international journal of clinical chemistry, 461, 141-145 (2016-07-13)
Calcium is an important serum ion which is frequently assayed in clinical laboratories. Since quality assurance requires reference methods, the establishment of a candidate reference method for serum calcium measurement is important. An inductively coupled plasma mass spectrometry (ICP-MS) method
Chihiro Naito et al.
Biological & pharmaceutical bulletin, 44(1), 140-143 (2021-01-05)
To establish a system for assessing drug permeation and irritation of the skin, the permeation of benzoic acid and isosorbide dinitrate, which are listed in the Pharmacopoeia, and the chemical irritation were evaluated using skin generated from human induced pluripotent
Esma Sari et al.
Journal of biomaterials science. Polymer edition, 29(11), 1302-1318 (2018-04-03)
The novel nanosensor based on Surface Plasmon Resonance (SPR) was developed for sensitive and selective detection of ciprofloxacin via molecularly imprinted nanoparticles (MIP/NPs). NPs were synthesized through miniemulsion polymerization technique with methacrylic acid as a functional monomer. FTIR, SEM, zetasizer
Alexandra Outsiou et al.
Water research, 124, 97-107 (2017-07-28)
An advanced oxidation process comprising sodium persulfate (SPS) and a novel magnetic carbon xerogel was tested for the degradation of bisphenol A (BPA), a model endocrine-disrupting compound. The catalyst, consisting of interconnected carbon microspheres with embedded iron and cobalt microparticles
Dan Zhang et al.
Environmental monitoring and assessment, 188(6), 348-348 (2016-05-15)
A liquid chromatography-electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) method was developed for monitoring and detection of four different drugs, namely acetanilide, pentylenetetrazole, phenacetin, and tetramethrin in porcine muscle, pasteurized milk, and table egg samples. For acetanilide and pentylenetetrazole, the samples
V Gianotti et al.
Chemosphere, 73(11), 1731-1736 (2008-10-22)
Leaching experiments are performed from clay-pollutant systems in order to evaluate the capability of clays to sequestrate organic pollutants from wastewaters. Reference kaolinite KGa-1b, montmorrillonite SWy-2 and reference soil BCR-700 are the sorbent materials. 2,4,6-trichloroaniline (2,4,6-TCA) and 4-chlorophenol (4-CP) are
Mukdawan Sukhang et al.
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 55(3), 273-282 (2019-11-21)
A sudden increase in serum creatinine after paraquat intoxication has been reported in several clinical studies. However, this dramatic change of creatinine may be possibly due to an interconversion of creatine-creatinine in relation to paraquat toxicity. In order to investigate
Ana María Casas Ferreira et al.
Journal of chromatography. A, 1218(30), 4856-4862 (2011-03-16)
A method using headspace generation and in situ derivatization with water soluble EDC (1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide) and TFEA (2,2,2-trifluoroethylamine) has been optimized for the determination of ibuprofen (2-(p-isobutylphenyl)propionic acid), one of the most common non-steroid anti-inflammatory drug (NSAIDs) residues in surface and
Selina Tisler et al.
Environmental science & technology, 53(13), 7400-7409 (2019-05-29)
The present study investigates the transformation of the antidepressant fluoxetine (FLX) by photo- and biodegradation and shows similarities and differences in transformation products (TPs). TPs were identified using LC-high-resolution mass spectrometry with positive and negative electrospray ionization. In a sunlight
Carlos Almeida et al.
Analytical and bioanalytical chemistry, 409(8), 2093-2106 (2017-01-17)
In the present work, bar adsorptive microextraction using miniaturized devices (7.5 × 3.0 mm) coated with suitable sorbent phases, combined with microliquid desorption (100 μL) followed by high-performance liquid chromatography with diode array detection (BAμE-μLD/HPLC-DAD), is proposed for the determination of trace level of
Improving transfection efficiency of ultrapure oligochitosan/DNA polyplexes by medium acidification.
Mireia Agirre et al.
Drug delivery, 22(1), 100-110 (2014-01-30)
Ultrapure oligochitosans (UOCs) have recently been reported as efficient nonviral vectors for corneal and retinal gene delivery. However, the influence of some physicochemical factors on the transfection efficiency, such as the pH, remains unclear. Deeper in vitro research of these
Athanasia Petala et al.
Water research, 81, 157-166 (2015-06-10)
Ethyl paraben (EP), an emerging micro-pollutant representative of the parabens family, has been subject to photocatalytic degradation under simulated solar radiation at a photon flux of 1.3·10(-4) E/(m(2) s). Six nitrogen-doped titania catalysts synthesized by annealing a sol-gel derived TiO2 powder under
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