[PDF] Top 20 um estudo em Portugal e nos Estados Unidos da América
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Evaluating the Adsorbed Water Layer on Polar Stationary Phases for Hydrophilic Interaction Chromatography (HILIC)
... the polar stationary phases selected for this study were either purchased from or kindly donated by the column ...the stationary phases including stationary phase chemistry, ... See full document
5
Comparison of the kinetic performance and retentivity of sub 2μm core shell, hybrid and conventional bare silica phases in hydrophilic interaction chromatography
... Hydrophilic interaction liquid chromatography (HILIC) is becoming increasingly popular for the separation of polar or ionised ...In HILIC, retention is thought to occur ... See full document
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Some factors that can lead to poor peak shape in hydrophilic interaction chromatography, and possibilities for their remediation
... Hydrophilic interaction liquid chromatography (HILIC) is fast becoming an established tool for the separation of polar and/or ionised ...methods. Stationary phases in ... See full document
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HYDROPHILIC INTERACTION LIQUID CHROMATOGRAPHY (HILIC) AND ITS APPLICATION IN PHARMACEUTICAL ANALYSIS
... term,‟Hydrophilic interaction chromatography” in 1990. This mode of chromatography dates back to earliest days of liquid ...column. Water saturated chloroform as mobile phase was used ... See full document
149
Development of generic methods for the analysis and purification of polar compounds by high performance liquid chromatography
... four HILIC columns of substantially different ...mobile phases in terms of retention or column efficiency for the neutral ...on stationary phases with strong ionic retention characteristics ... See full document
113
Determination of atmospheric organosulfates using HILIC chromatography with MS detection
... liquid chromatography (UPLC) with negative electrospray ioniza- tion mass spectrometry (MS) with the aid of synthesized organosulfate ...drophilic interaction liquid chromatography (HILIC) ... See full document
7
Application of Molecularly Imprinted Polymers for the Analysis of Pesticide Residues in Food—A Highly Selective and Innovative Approach
... The comprehensive understanding of the role of those chemical entities used on the preparation of MIPs is a very demanding task [7]. Attending to the literature some remarks could be considered: the relevance of the ... See full document
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A comparative study of modern stationary phases for fast liquid chromatography separation of synthetic food colorants
... modern stationary phases were developed with different optimized mobile phase composition and gradient elution to achieve efficient separation of all eight ... See full document
10
Arctic Ocean outflow and glacier–ocean interactions modify water over the Wandel Sea shelf (northeastern Greenland)
... of water masses and interactions with ambient water from the continental slope and the tidewater glacier ...subsurface water is associated with the Pacific water outflow from the Arctic ... See full document
8
The development of silica hydride stationary phases for high performance liquid chromatography from conception to commercialization
... mobile phases it has limitations based on pH ...of stationary phase stability is to fundamentally alter this bonding reaction and to produce a direct silicon-carbon bond at the ... See full document
10
Bio-inspired strategies for designing antifouling biomaterials
... causes water to bead up on the surface, and pick up the contaminants as it rolls off the surface, and thus prevent attachment of any cells onto the surface [11, ...of water, sloughs off the organism of the ... See full document
14
Glycosylation Site Analysis of Human Platelets by Electrostatic Repulsion Hydrophilic Interaction Chromatography
... As expected, the bulk of peptides could be observed in the flow-through fractions from 1 min to 12 min (see Fig. 1). They comprise non-glycosylated peptides, whereas high abundant proteins such as glycoprotein IIb/IIIa ... See full document
11
Structural characterisation of the N glycan moiety of the barnacle settlement inducing protein complex (SIPC)
... via hydrophilic interaction liquid chromatography with fluorescence detection (HILIC-fluorescence) provided evidence of predominantly high mannose glycans (M2–9), with the occurrence of ... See full document
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... of chromatography are defined essentially according to the nature of the interactions between the solute and the stationary phase, which may arise from hydrogen bonding, Vander walls forces, electrostatic ... See full document
20
Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact
... the competing effects of the expanding interface on the one hand and equilibration of bulk and interface concentration through adsorption on the other hand. For an initially surfactant free interface, the droplet wets ... See full document
11
Use of Carbohydrates as Eluent in Thin Layer Chromatographic Separation of Amino acids on Conventional Stationary Phases
... Stability is an important and essential aspect of validation in thin layer chromatographic analysis. Highly sensitive samples should not decompose during development of the chromatogram and should be stable in ... See full document
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Study of retention and peak shape in hydrophilic interaction chromatography over a wide pH range
... values for BSA, 2-NSA and p-XSA are relatively modest (-1.5, -0.5, -0.8 respectively). The experiments were repeated using columns from a different manufacturer (Agilent Glycan amide and bare silica columns) in order to ... See full document
8
A method for the analysis of sugars in biological systems using reductive amination in combination with hydrophilic interaction chromatography and high resolution mass spectrometry
... ionisable functional groups into the sugars thereby both improving separation and the detection of the poorly ionising sugars by electrospray mass spectrometry [7-19]. A frequently adopted strategy for sugar ... See full document
22
Development and Validation of RP-HPLC Method for Desoximetasone in Bulk and Cream Formulation
... analysis. Chromatography is based on principle where the mixture of substances is separated according to their affinity towards stationary phase and mobile phase is used for elution of separated ... See full document
17
Developments in Gas Liquid Chromatography Using Liquid Crystals as Stationary Phases
... crystal stationary phases according to their polarities, also, it is investigate the correlation between the molecular structure and the polarities of these liquid crystals towards each type of ... See full document
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