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Showing 1 to 20 of 20 for “"capillary zone electrophoresis"”.
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Capillary Zone Electrophoresis Studies of Sulfur Containing Compounds
… researcher presents a new approach, the use of Capillary Zone Electrophoresis (CZE) for the analysis of these types of ions as well as the closely related thiophenium ions. CZE offers an unprecedented advantage in that separations can be employed for speciation or quantitation of complex …
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Capillary Zone Electrophoresis Analysis of Isocyanates in Spray-Painting Operations
… 5521, OSHA Method 42, NIOSH Method 5522 and Capillary Zone Electrophoresis (CZE) methods were compared. The results obtained from the CZE analysis method and the HPLC analysis methods are comparable. The CZE methods could be used as a complementary tool to HPLC, and offer better resolution, …
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Application of capillary zone electrophoresis methods for the investigation of in vitro drug metabolism.
… and nuclear magnetic resonance spectroscopy. Capillary zone electrophoresis (CZE) offers an alternative analytical technique to a similarly broad range of analytes and mechanisms of detection. The advantages of CZE are the reduced run times, higher efficiency separations and savings on solvent …
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Rapid analysis of inorganic and organic anions in kraft pulping liquors by capillary zone electrophoresis
… in kraft pulping liquors and effluents by capillary zone electrophoresis. In addition, several other key anions, including: hydroxide, carbonate, oxalate, formate and chloride can be quantified in the same process liquors. Two approaches were developed for determining the anions. In one …
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Analysis of Clinically Important Compounds Using Electrophoretic Separation Techniques Coupled to Time-of-Flight Mass Spectrometry
<p>Capillary electrophoretic (CE) separations were successfully coupled to time-of-flight mass spectrometric (TOFMS) detection for the analysis of three families of biological compounds that act as mediators and/or indicators of disease, namely, catecholamines (dopamine, epinephrine, …
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Separation and Detection of 2,3-Dihydroxybenzoic Acid
… of this product is initially performed using capillary zone electrophoresis (CZE) coupled with UV detection to establish optimum separation conditions. These conditions were applied for rapid, efficient, and sensitive determination of 2,3-DHBA by CZE coupled with electrochemical detection. …
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Packed capillary columns for liquid chromatography
The advantages and disadvantages of packed capillary columns for high performance liquid chromatography are examined. Historically, the advantages are smaller sample and phase consumption, enhancement in sensitivity, easy column synthesis, higher obtainable efficiency, and easier interfacing to …
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New Sampling and Analysis Method for Isocyanates in Spray-Painting Operations
… A new analysis method for isocyanates which uses capillary zone electrophoresis (CZE) was also developed . Compared to the HPLC method, the CZE method gives a better sensitivity for the detection of both HDI monomer and oligomers.
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Prediction of Peptide Maps in CZE and MEKC Systems
… the electrophoretic mobilities of peptides in capillary zone electrophoresis(CZE). A three-step strategy was used: first, select the best charge-size term from the existing models; second, develop a muilti-linear regression(MLR) model to study the linear characteristics of peptide mobility …
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The study of capillary electrophoresis: polyimides, nylon and non-aqueous analysis
New applications of capillary zone electrophoresis (CZE) are explored. These include condensation polymer compositional analysis (1,2,3), drug in urine analysis (4) and nonaqueous CE (5) by using a mixture of N Methylformamide (NMF) and dimethylsulfoxide (DMSO). First, the application of CZE to …
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Electrokinetic separations in fused silica capillaries
… of co-optimizing resolution and detection in Capillary Zone Electrophoresis (CZE) and Micellar Electrokinetic Chromatography (MEKC) are examined by deriving mathematical expressions which illustrate the relative importance of various experimental parameters. For CZE, expressions are derived to …
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Development of gas chromatography/mass spectrometry analysis of urinary acylcarnitines : application to metabolism studies
… The preliminary results from the application of capillary zone electrophoresis methods to acylcarnitine analysis are also reported.
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Development and applications of electrically driven separation methods.
Capillary Electrochromatography (CEC) is one of the newest separation techniques. It is a hybrid technique of high performance liquid chromatography (HPLC) and capillary zone electrophoresis (CZE). It combines the simplest capillary electrophoresis mode where separations are based on the …
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Determination of capillary electrophoretic methodology and its application as a mechanistic tool for gaining insight into the composition of, and detergent action on, coloured macromolecule fabric stains.
A range of Capillary Electrophoresis (CE) techniques have been developed for the analysis of various chemical components in a range of real matrices. The techniques developed have then been used as a tool for monitoring the chemistry of complex systems. The use of such methods is a novel …
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Developing Detection Methods for Nitroxyl
… GS(O)NH₂ was fluorescently labeled with NDA, and capillary zone electrophoresis with laser-induced fluorescence (CZE-LIF) was used for separation and detection. CZE-LIF provided high analytical sensitivity for GS(O)NH₂, with a limit of detection (LOD) of 1.4 ± 0.1 nM. Cultured cells were treated …
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Studies on equine milk and comparative studies on equine and bovine milk systems
… isoforms of equine αs- and β-caseins and capillary zone electrophoresis showed 3 to 7 phosphorylated residues in equine β-casein. In vitro digestion of equine β-casein by pepsin and Corolase PP™ did not produce casomorphins BCM-5 or BCM-7, believed to be harmful to human health. Electron …
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Fundamental Capillary Electrophoresis: An Evaluation of Electrokinetic Sampling
<p>Capillary electrophoresis has become a powerful separation technique in fields of biochemical separations, inorganic ions, and chiral separations. The technique has experienced exponential growth since the historic publication of Zone Electrophoresis in Open-Tubular Glass Capillaries by Lukacs …
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Capillary Electrophoresis of Proteins with Selective On-line Affinity Monoliths
… analysis of proteins in biological fluids by capillary electrophoresis (CE) is of interest in clinical chemistry. However, due to low analyte concentrations and poor concentration limits of detection (CLOD), protein analysis by this technique is frequently challenging. Coupling …
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Analysis of plant analytes using capillary electrophoresis and high performance liquid chromatography
… high performance liquid chromatography and capillary electrophoresis methods for the analysis of three classes of analytes: osmoregulants, minerals and amino acids. Firstly, this study explored the potential of capillary electrophoresis for the analysis of three very common osmoregulants …
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Patterns of post-translational histone modifications, chromatin condensation and DNA fragmentation during apoptosis
Apoptose in eukaryotischen Zellen ist häufig an der Schrumpfung des Zellkörpers, der Bildung apoptotischer Körperchen sowie an der Fragmentierung des Chromatins durch die über die DNase CAD (DFF40) katalysierte Spaltung nucleosomaler DNA deutlich zu erkennen. Des Weiteren haben post-translationale …