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Showing 1 to 20 of 27 for “"Zone electrophoresis"”.
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Capillary Zone Electrophoresis Studies of Sulfur Containing Compounds
… 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 mixtures by using …
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Capillary Zone Electrophoresis Analysis of Isocyanates in Spray-Painting Operations
… 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, higher …
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Application of capillary zone electrophoresis methods for the investigation of in vitro drug metabolism.
… 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 usage and …
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Rapid analysis of inorganic and organic anions in kraft pulping liquors by capillary zone electrophoresis
… 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 method, …
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Electrophoretic Mobilities of Topoisomers of ΦX174 DNA
<p>The analysis of nucleic acid structure by zone electrophoresis in agarose gels has become an increasingly important method in studies requiring the separation and identification of species differing only slightly in molecular weight or conformation. We have demonstrated the existence of several …
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Analysis of Clinically Important Compounds Using Electrophoretic Separation Techniques Coupled to Time-of-Flight Mass Spectrometry
… possible for them to be determined by capillary zone electrophoresis coupled to TOFMS without employing any preconcentration scheme beyond sample work up by solid phase extraction (SPE). Using this hyphenated approach, submicromolar levels of catecholamines and metanephrines in normal human urine …
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Separation and Detection of 2,3-Dihydroxybenzoic Acid
… 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. Quick and …
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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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Packed capillary columns for liquid chromatography
… packed fused silica columns, and capillary zone electrophoresis. These studies also address the disadvantages of microscale HPLC which are stringent instrument design, brittle or weak columns, poor column stability, and the lack of commercial instrumentation. The results of these …
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New Sampling and Analysis Method for Isocyanates in Spray-Painting Operations
… 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
… 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 using the best …
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Viruses of Heliothis armigera (Hübner) (Lepidoptera : Noctuidae)
… as differential centrifugation, density gradient zone electrophoresis and absorption with antibody to NPV. The CPV was then successfully propagated by passage in larvae reared on synthetic media. Pure CPV having been obtained, its replication and physico-chemical properties could be studied. …
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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
… 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 show the …
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Development of gas chromatography/mass spectrometry analysis of urinary acylcarnitines : application to metabolism studies
… 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.
… liquid chromatography (HPLC) and capillary zone electrophoresis (CZE). It combines the simplest capillary electrophoresis mode where separations are based on the differences in the electrophoretic migration of charged analytes under the influence of a high electric field with separation …
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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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CE-microreactor-CE-MS-MS for protein analysis
Capillary electrophoresis-mass spectrometry (CE-MS) provides a powerful system that combines the speed and automation capabilities of CE with the detection and identification capabilities of MS. Integrating on-line enzymatic microreactor digestion with a CE-MS system reduces sample handling and …
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Three cocluded insect viruses : a biophysical and biological study of the nuclear-polyhedrosis virus of Colias electo, the granulosis virus of Heliothis armigera and the nuclear-polyhedrosis virus of Heliothis zea
… of the viral elements were further purified by zone electrophoresis in sucrose density gradients. Some information was gathered on the mode of transmission of the infection from insect to insect by contact or cannibalism, from one generation to the next through the eggs, and particularly from …
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