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*  Fast gradient normal-phase high pressure liquid chromatography for rapid baseline separation of vitamin E forms in palm-derived...
... accurate and precise normal phase high pressure liquid chromatographic method was developed and validated for the simultaneous ... Fast gradient normal-phase high pressure liquid chromatography for rapid baseline separation of vitamin E forms in palm-derived ... Fast gradient normal-phase high pressure liquid chromatography for rapid baseline separation of vitamin E forms in palm-derived ... A rapid, accurate and precise normal phase high pressure liquid chromatographic method was developed and validated for the ...
http://pubs.rsc.org/en/content/articlelanding/2017/ay/c7ay00924k
*  Magnetically induced structural anisotropy in binary colloidal gels and its effect on diffusion and pressure driven...
Hence the specific clay concentration resulting in the highest liquid flux was pressure dependent. This study gives new insight ... Such findings merit consideration when designing porous composite materials for use in for example fuel cell, chromatography ... Magnetically induced structural anisotropy in binary colloidal gels and its effect on diffusion and pressure driven ... Magnetically induced structural anisotropy in binary colloidal gels and its effect on diffusion and pressure driven ...
http://pubs.rsc.org/en/Content/ArticleLanding/2014/SM/C4SM00315B
*  Control of the electrochemical and photophysical properties of N -substituted benzo[ ghi ]perylene derivatives - Materials...
Preparative recycling gel permeation chromatography was performed using a high pressure liquid chromatography apparatus Japan ... S14) because of high ΦISC.. To quantitatively discuss the excited-state dynamics, we calculated the net rate constants of these ... The synthesized N-substituted PAHs were well-characterized by 1H NMR, 13C NMR, high resolution MALDI-TOF mass, and FT-IR ... Column flash chromatography was performed on silica gel (Kanto Chemical Silica gel 60 N, 40-50 μm or 100-210 μm). ...
http://pubs.rsc.org/en/content/articlehtml/2017/qm/c7qm00301c
*  Electrochemical hydrogen sulfide biosensors - Analyst (RSC Publishing) DOI:10.1039/C5AN02208H
... including high pressure liquid chromatography (HPLC) and gas chromatography (GC),9-11 monobromobimane (MBB),12-15 fluorescence ... An excellent H2S electrochemical sensor can be characterized by high sensitivity, high selectivity, low-detection limit, ... The electric potential between H2S and O2 is really high, making it extremely favorable for oxidation reactions, so H2S can be ... Chromatography based methods, which have been used to measure both plasma and tissue H2S sensitivity, however, do not have the ...
https://pubs.rsc.org/en/content/articlehtml/2016/an/c5an02208h
*  Electrocatalytic methanol oxidation with nanoporous gold: microstructure and selectivity - Nanoscale (RSC Publishing) DOI:10...
... contents in the electrolyte after MEO at different electrodes by high-pressure liquid chromatography (HPLC) and ion-exchange ... The higher BE than Ag2O indicates a higher local Ag concentration because the binding energy has a shift of −0.5 eV vs. the Ag( ... The selectivity for HCOO− formation is found to be the highest for electrodes with highest xAg (Fig. 7B). While no ... Low coordinated sites are typically associated with higher activity,46 but the sample with the highest number of those sites ...
http://pubs.rsc.org/en/content/articlehtml/2017/nr/c7nr05124g
*  Chiral hybrid materials based on pyrrolidine building units to perform asymmetric Michael additions with high stereocontrol -...
Data for 13C NMR spectra are reported in terms of chemical shift (δ, ppm). High performance liquid chromatography (HPLC) was ... The total pore volume25 was obtained from the amount of N2 adsorbed at a relative pressure of about 0.99. The external surface ... which was purified by silica gel column chromatography (AcOEt/hexane 1/1 as eluent) to afford 2 as an orange yellow liquid (6.1 ... high Michael adduct yields were achieved, and the diastereoselectivity and enantioselectivity were also high, up to 90% and 75 ...
https://pubs.rsc.org/en/content/articlehtml/2018/cy/c8cy01650j
*  Sustainable synthesis of amino acids by catalytic fixation of molecular dinitrogen and carbon dioxide - Green Chemistry (RSC...
Finally, chiral high-performance liquid chromatography (HPLC) analyses were carried out to quantify the ratio of D- and L-Ala ... which are pretty similar to those achieved at atmospheric pressure after 72 h. Moreover, at high pressure Gly and Ala molar ... A high pressure stainless steel reactor was designed ad hoc and employed to perform the synthesis of amino acids (AAs). The ... It requires a catalyst and high temperature and pressure to induce the rupture of the strong N-N bond and subsequent ...
http://pubs.rsc.org/en/content/articlehtml/2018/gc/c7gc02911j
*  Paper spray mass spectrometry for high-throughput quantification of nicotine and cotinine - Analytical Methods (RSC...
5 Gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) are powerful techniques for ... PS-MS/MS is readily achieved on mass spectrometers that include atmospheric pressure inlets, and allows for convenient ... Nicotine calibrators for GC-MS/MS were prepared by adjusting the pH to 13 by addition of 2.5 M NaOH followed by liquid-liquid ... Coupling high-throughput quantification with PS-MS/MS to high-throughput tobacco smoke exposure experiments with the Vitrocell ...
http://pubs.rsc.org/en/content/articlehtml/2018/AY/C7AY02204B
*  Degradation of polyethylene glycols and polypropylene glycols in microcosms simulating a spill of produced water in shallow...
Following the identification of PEGs, PPGs, and products by accurate mass analysis, high-performance liquid chromatography mass ... 1-3 Hydraulic fracturing fluids are pumped into low-permeability hydrocarbon-bearing formations at high pressures to enhance ... and degradation products was conducted by accurate mass analysis using ultra high-performance liquid chromatography quadrupole ... 5 solids-to-liquids ratio). Abiotic control microcosms were prepared for each produced water sample by adding 5.0 g L−1 sodium ...
https://pubs.rsc.org/en/content/articlehtml/2018/em/c8em00291f
*  Six- and seven-coordinate Fe( ii ) and Zn( ii ) compounds ligated by unsymmetric xanthene-based ligands: characterization and...
12). Compounds 4 and 5 exhibit room temperature magnetic moments of 6.1μB and 5.6μB (0.1 T), respectively, verifying the high ... The crude product was purified by column chromatography (ethyl acetate. :. hexane = 1. :. 4, Rf = 0.45) to give a colourless ... magnetometer with liquid Helium cooling in a temperature range of 1.8-300 K and magnetic field of 0.1 T. The samples were ... atmospheric pressure solids analysis probe ionization experiments (ASAP)). Microanalyses were carried out at the London ...
http://pubs.rsc.org/en/content/articlehtml/2016/qi/c5qi00298b?page=search
*  Utilization of fluoroform for difluoromethylation in continuous flow: a concise synthesis of α-difluoromethyl-amino acids -...
... high pressure operation and fast gas-liquid mass transfer enhance the availability of the gaseous reagent in the liquid phase. ... The yield of eflornithine for the present chromatography-free method is significantly higher than that previously reported for ... fluoroform dissolved completely in the liquid feed. At higher temperatures at this pressure, distinct gas-liquid segments were ... and an adjustable back pressure regulator. With pressures of ∼5 bar and temperatures below ∼25 °C for reactor 2, ...
http://pubs.rsc.org/en/content/articlehtml/2017/gc/c7gc02913f
*  Kinetics of esterification of 10-undecenoic and ricinoleic acids with near-critical and supercritical methanol - Sustainable...
This pressure was chosen as it is greater than twice the critical pressure of methanol (about 8.1 MPa). At these high pressures ... Gas chromatography (GC) was used to determine the concentrations of these methyl esters. The reaction samples were suitably ... These fatty acids are in the liquid state under ambient conditions and are sparingly soluble in methanol. The molar ratio was ... The mixture critical pressure was found to approach that of the pure component (methanol) at higher molar ratios such as 5. :. ...
http://pubs.rsc.org/en/content/articlehtml/2017/se/c7se00258k
*  Efficient photoelectrochemical water oxidation enabled by an amorphous metal oxide-catalyzed graphene/silicon heterojunction...
... which was independent of the thermodynamic and kinetic properties of the Si/liquid junction, affording a high photovoltage of ... The graphene micro-net was prepared on a Cu mesh by atmospheric pressure chemical vapor deposition (APCVD).24-27 A typical ... The evolved hydrogen and oxygen gas during the solar water splitting was quantified by gas chromatography (GC2014, Shimadzu). ... S7c.† For the FeCoOx film, an overpotential of 340 ± 4 mV was needed to reach an OER current of 10 mA cm−2, much higher than ...
https://pubs.rsc.org/en/content/articlehtml/2018/se/c7se00504k
*  Efficient nanomaterials for harvesting clean fuels from electrochemical and photoelectrochemical CO 2 reduction - Sustainable...
... high catalytic activity, and stability. Ag nanostructures co-catalyzed by ionic liquids have the ability to reduce CO2 into CO ... 100 Different characterization techniques were used for gas and liquid phase samples, including gas chromatography (GC) with a ... in 0.5 M Na2CO3 solution under 8.5 atm pressure of CO2, with a 150 W Xe lamp, as reported by Aurian-Blajeni et al.162 After ... Bell et al. attributed the higher selectivity of CuNPs for C2H4 due to the high density of Cu grain boundaries.106 It has also ...
http://pubs.rsc.org/en/content/articlehtml/2018/se/c7se00371d
*  On-chip label-free protein analysis with downstream electrodes for direct removal of electrolysis products - Lab on a Chip ...
Indeed, when the flow rate is small, the diffusive broadening term (σD2) starts to dominate eqn (1), whereas at high flow rates ... 1A) were designed to have a hydrodynamic resistance Rh such that the pressure drop on chip would exceed the build-up of ... Indeed, as the liquid volumes characteristic of microfluidic devices are on the micro to nanolitre scale, the physical size of ... The Brichos protein was then further purified via ion exchange chromatography using salt gradient elution. The Brichos peak was ...
http://pubs.rsc.org/en/content/articlehtml/2017/lc/c7lc00797c
*  Advances in mass spectrometry based single-cell metabolomics - Analyst (RSC Publishing) DOI:10.1039/C8AN01581C
Air pressure. MALDI. Allium cepa 47 Quartz. Internal titanium wire. 2-5 μm. 0.5-442.5 pL. Ionic liquid/silicone oil. ESI (−). ... Yu et al. developed a targeted liquid chromatography (LC) ESI-MS/MS method for detecting glutathione, a suggested biomarker of ... Higher degrees of corrosion of the copper wire correlated with the increased porosity and surface area of the probe. After ... Air pressure. ESI. PC 12, T-cell, B-cell. 44 Glass. Internal platinum wire. ∼1 μm. 0.1-0.3 pL. Air pressure. ESI (−). HepG2/C3A ...
https://pubs.rsc.org/en/content/articlehtml/2019/an/c8an01581c?page=search
*  Supercritical water hydrolysis: a green pathway for producing low-molecular-weight cellulose - Green Chemistry (RSC...
... glucose and cello-oligosaccharides in the liquid fraction was quantified by high performance anion-exchange chromatography with ... As described in the previous sections, the high energy demand, temperature and pressure levels as well as low reaction times ... The relatively high peak areas revealed a high level of crystallinity of above 50% for all samples. The SCWT had little ... a promising selectivity as high as 98% could be reached.19 Such high selectivity levels could enable the upscaling of SCWT ...
http://pubs.rsc.org/en/content/articlehtml/2016/gc/c6gc02544g
*  Imidazolium-based ionic liquid decorated zinc porphyrin catalyst for converting CO 2 into five-membered heterocyclic molecules ...
... and high selectivities (,97%) at 60 °C and 2.0 MPa CO2 pressure in the absence of any additives. However, when the internal ... The product was purified by column chromatography using CHCl3/hexane (2/1, v/v) as an eluent to give Br-TPP in 10% yield. 1H ... In order to ensure the higher efficiency for CO2 conversion, a CO2 pressure of 2.0 MPa was selected for further investigations. ... which showed high catalytic activity in this coupling reaction.37 However, in these catalytic systems, high temperature (≥100 ° ...
https://pubs.rsc.org/en/content/articlehtml/2017/se/c7se00464h
*  Laccase-natural mediator systems for "green" synthesis of phenolic monomers from alkali lignin - Sustainable Energy & Fuels ...
... thus demonstrating higher efficiency of the LTV-MS toward lignin decomposition. The gas chromatography-mass spectroscopy (GCMS ... The pH values of the liquid fractions, controlled by a pH meter, were adjusted to ∼2.5 by addition of 1 wt% HCl. The liquid ... Before and after LMS treatment, the lignin samples were tested with a Zeiss Supra 40VP variable-pressure field emission SEM. ... In future studies, higher concentration of both laccase and the mediator will be used to obtain higher amount of phenolic ...
http://pubs.rsc.org/en/content/articlehtml/2017/se/c7se00209b
*  A guide to integrating immunohistochemistry and chemical imaging - Chemical Society Reviews (RSC Publishing) DOI:10.1039...
... such as quantitative liquid chromatography-MS/MS for each sample, after which the value of spatially assessing concentration ... where the sample is incubated in buffers containing surfactants and EDTA at high temperature and pressure; and (ii) protease- ... Direct detection of high-abundance species. • Limited sensitivity for high mass compounds and low abundance biomolecules. ... High specificity. • Diffraction limited. Kubitscheck;3 Thorn2. • Structural/organelle-specific markers. • Diverse range of ...
https://pubs.rsc.org/en/content/articlehtml/2018/cs/c7cs00610a
*  N , N -Dimethylation of nitrobenzenes with CO 2 and water by electrocatalysis - Chemical Science (RSC Publishing) DOI:10.1039...
N-methylation of nitrobenzenes has also been studied using H2 as the reducing agent at high temperature and under high pressure ... Ionic liquids (ILs) are efficient supporting electrolytes for the reduction of CO2.27,41 The initial screening was performed ... The gaseous product of the electrochemical experiments was collected and analyzed by gas chromatography (GC, HP 4890D), which ... 33 It is known that nanoporous carbon materials have high specific surface areas, high chemical and thermal stabilities, and ...
http://pubs.rsc.org/en/content/articlehtml/2017/sc/c7sc01058c
*  Metabolic fate of strawberry polyphenols after chronic intake in healthy older adults - Food & Function (RSC Publishing) DOI...
High-performance liquid chromatography (HPLC) grade acetonitrile and methanol, and reagent grade formic acid were purchased ... Flavonoid-rich beverage effects on lipid profile and blood pressure in diabetic patients, World J Diabetes, 2014, 5, 962-968 ... concentrations were significantly higher in fasting (2 to 2.5 times higher than control) and 2 h (approximately 2 times higher ... transferred to amber HPLC vials and were analyzed using an Agilent 1290 Infinity ultra-high performance liquid chromatography ( ...
http://pubs.rsc.org/en/content/articlehtml/2018/fo/c7fo01843f
*  Mass transfer considerations for monitoring catalytic solid-liquid interfaces under operating conditions - Reaction Chemistry ...
Chiral high performance liquid chromatography (HPLC) was performed using an Agilent Technologies 1200 series system equipped ... behavior is the pressure exerted on the porous layer by the incoming liquid flow entering a 100 μm reactor with a narrow liquid ... The smaller liquid reservoir for the 100 μm reactor allowed a significantly faster exchange of the liquid phase. The higher ... Therefore, higher volumetric flow rates leading to a fast exchange of the liquid phase decrease concentration gradients along ...
http://pubs.rsc.org/en/content/articlehtml/2018/re/c7re00179g
*  A hybrid organic-inorganic three-dimensional cathode interfacial material for organic solar cells - RSC Advances (RSC...
... almost one order of magnitude higher. This more balanced charge transport regime could explain the higher FF in the devices ... Table 4 Advancing contact angle of three probing liquids on the surfaces of PBDT-BT:PC61BM, PBDT-BT:PC61BM/PFN, PBDT-BT:PC61BM/ ... The PFN was synthesized in accordance with literature method,37 Gel Permeation Chromatography (GPC) analysis showed the weight- ... equipped with a variety of masks and a gradient shutter at a pressure below 2 × 10−6 Pa. The shadow masks gave the OSCs device ...
http://pubs.rsc.org/en/content/articlehtml/2017/ra/c7ra04044j
*  Responses of flavonoid profile and associated gene expression to solar blue and UV radiation in two accessions of Vicia faba L....
sabellica) by high-performance liquid chromatography diode-array detection/electrospray ionization multi-stage mass ... with 1.95 kPa as the vapor pressure deficit based on Leaf temperature (VpdL). The PPFD used for all measurements was 1000 μmol ... faba is grown at high altitudes (around 3000 m) with strong exposure to UV light, whereas it is exposed to less UV at higher ... 45 Our data revealed consistently higher expression of DOGT1 in Aurora, implying higher glycosylation activity, which may ...
https://pubs.rsc.org/en/content/articlehtml/2019/pp/c8pp00567b