Download or read book Capillary Electrochromatography and Pressurized Flow Capillary Electrochromatography written by Ira S. Krull and published by Hnb Publishing. This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Capillary Electrochromatography written by Keith D. Bartle and published by Royal Society of Chemistry. This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capillary electrochromatography (CEC) is a new and exciting hybrid separation technique that seeks to exploit the combined advantages of both capillary electrophoresis (high efficiencies) and HPLC (mobile and stationary phase selectivity). It is a technique with tremendous potential, especially in the pharmaceutical and biomedical fields. This is the first book to be devoted to the topic and presents reviews by the world leaders in the field on the theory and development of the technique and current and potential future applications. "Capillary Electrochromatography" provides an excellent introduction to the field for graduates and professionals in industry and academia with an interest in separation science.[part of the RSC Chromatography Monographs series]
Download or read book Capillary Electrochromatography written by F. Svec and published by Elsevier. This book was released on 2001-03-14 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the evolution and uses for capillary electrochromatography as a new dimension to current separation science. With the emergence of this technique the selection of available separation mechanisms increases dramatically. The book also discusses the new horizons in the separation of non-polar compounds which have been opened as a result of CEC. Over ten chapters authors cover a wide variety of topics and provide the reader with necessary theoretical background, description of the instrumentation, modes of operation and methods of detection and an overview of the broad variety of applications of capillary electrochromatography. To view the full contents as a pdf, please click /inca/publications/misc/621924_contents.pdfhere.
Download or read book Liquid Chromatography written by A. Rocco and published by Elsevier Inc. Chapters. This book was released on 2013-01-08 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capillary electrochromatography (CEC) is one of the recently developed miniaturized analytical techniques. The separation mechanism involved in the separation process is based mainly on the analytes‘ stationary–mobile phase interactions; however, in the case of charged compounds, the different electrophoretic mobilities have to be considered. The process takes place in a capillary column, containing a selected stationary phase, where the mobile phase is delivered by an electro-osmotic flow (EOF) controlled by the application of a relatively high electric field. In contrast to what happens in liquid chromatography, where the mobile phase possesses a parabolic profile, in CEC, a plug flow profile is observed that helps achieve a higher efficiency. This overview includes the illustration of basic principles of CEC, the latest achievements concerning the instrumentation used (stationary phases, columns, detectors, hyphenation), description of method optimization, selected examples, and some potential uses of CEC in separation science.
Download or read book Novel Concepts and Techniques in Capillary Electrochromatography written by Chadin Kulsing and published by . This book was released on 2015 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capillary electrochromatography (CEC) has been realised as a combination of highperformance liquid chromatography (HPLC) and capillary electrophoresis (CE) allowing theseparation of analytes based on their differing adsorption and migration behaviour. There is a considerable interest in developing new methodologies for CEC, which uses chromatographic beads or monoliths as stationary phases or alternatively employs open tubular (OT)capillaries relying on surface modifications. Besides the bulk flat flow profile of the mobile phase in CEC columns allowing an enhanced resolution, due to the influence of the applied electrical field there are other possibilities to provide a higher resolution with better detection.As an additional newly means for peak sharpening and sample enrichment isotachophoresis and a "sweeping mechanism" could be envisaged, which both take advantage of the inhomogeneous electric field pattern in the capillary by choosing appropriate leading and terminating background electrolytes (BGEs). Transient isotachophoresis would be anothertechnique to provide an increased plate height in the separations, using an optimized sample matrix, e.g. containing a relatively high acetonitrile content, with the same leading and terminating BGEs.In this thesis, a new method to generate a "sharpening zone", which is similar to theconcept of transient isotachophoresis, was established using an aqueous sample matrixcontaining an organic solvent. Target analytes within this zone could be concentrated whilst they migrated through the capillary. A novel technique was developed that used the sharpening zone for sweeping and concentrating several unresolved analyte peaks allowingan enhanced peak resolution. As the aim was to concentrate only some part of the analytezone containing compounds of interest, the position and width of the sharpening zone needed to be well controlled. Various techniques to tune the width and position of the sharpening zone were thus developed, involving modifying the organic modifier content in the BGE, applying pressure additionally to the electroosmotic flow (EOF) and modifying the inner surface of the capillaries. This work also critically evaluated some related existing knowledgeand theoretical approaches in CEC including the concept of tuneable system eigenpeaks (noncomigrating or ghost peaks caused by waves of an electric field in the capillary). Although peak broadening caused by eigenpeaks (which often suppresses resolution in CEC) has been well described for aqueous or pure non-aqueous BGEs, a systematic study of eigenmobility inaqueous/acetonitrile BGEs had not been reported. The experiments related to the eigenmobility led to a new approach to tune the eigenpeak position in chromatogramswhereby a selective sample peak sharpening mechanism was elaborated using the sharpeningzone. The novel approach was demonstrated for the separation of various peptides in the CE mode and for the resolution of incompletely resolved chiral amino acids in CEC.These investigations furthermore led to the development of an appropriate stationaryphase, which was produced using techniques for an in-column synthesis of a molecularimprinted polymer (MIP). Well prepared MIPs are capable of specifically enhancing theretention of target analytes, herein focusing on enantio-selective isolation of chiral molecules. Since such a MIP was rather rigid, which often caused capillary clogging when used as a conventional monolithic stationary phase, this MIP was incorporated into porous layer opentubular (PLOT) capillaries. Numerous experimental difficulties were overcome with respect to the vinylisation of long fused-silica capillaries and for the polymerisation of the MIP within using thermal- and photo-polymerisations. A method for the characterization of suchMIP-PLOT capillaries was elaborated involving the Langmuir adsorption theory. The new columns were evaluated using chromatography, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and CEC analysis.All experiments were designed according to the principles of Green Chemistry. Theseconcepts involved the use of small scale analysis, simulation studies reducing the number of performed experiments, systematic studies with low amounts of solvents and materials, and optimisation of synthesis methods to reduce time, energy and reagent consumption.The theories, methods and results presented in this thesis will, in the future, allowfurther targeted developments of novel analytical tools for a green, sensitive, selective and improved resolution analysis of chemical and biological compounds including chiral compounds, peptides and proteins.
Download or read book Capillary Electromigration Separation Methods written by Colin F. Poole and published by Elsevier. This book was released on 2018-04-13 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capillary Electromigration Separation Methods is a thorough, encompassing reference that not only defines the concept of contemporary practice, but also demonstrates its implementation in laboratory science. Chapters are authored by recognized experts in the field, ensuring that the content reflects the latest developments in research. Thorough, comprehensive coverage makes this the ideal reference for project planning, and extensive selected referencing facilitates identification of key information. The book defines the concept of contemporary practice in capillary electromigration separation methods, also discussing its applications in small mass ions, stereoisomers, and proteins. Edited and authored by world-leading capillary electrophoresis experts Presents comprehensive coverage on the subject Includes extensive referencing that facilitates the identification of key research developments Provides more than 50 figures and tables that aid in the retention of key concepts
Download or read book Very High Pressure Assisted Capillary Electrochromatography written by Carl John Adams and published by . This book was released on 2004 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Chromatography written by Phyllis R. Brown and published by CRC Press. This book was released on 2001-03-06 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the 41st volume in the series Advances in Chromatography. The papers in this volume: take advantage of the properties of electroosmotic flow to explore capillary electrochromatography as an alternative to HPLC for nonvolatile analytes; analyze advances in biomembrane chromatography using reverse-phase HPLC for protein purification and bioph
Download or read book Analysis of Pharmaceuticals by Capillary Electrophoresis written by Kevin D. Altria and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieser erste Titel einer ganzen Serie von anwendungsbezogenen Handbüchern zur Kapillarelektrophorese beschäftigt sich mit der Analytik von pharmazeutischen Substanzen. Dabei werden verschiedene Techniken praxisnah erläutert. Jeder, der im Labor - ob wissenschaftlich oder praxisnah - mit der Analyse von oft chiralen Pharmazeutika konfrontiert ist, wird viele Hinweise und Tips für seine Arbeit finden.USP: Einzige Monographie zur Analyse von Pharmazeutika mit CE This book describes the current state of the art for the analysis of pharmaceuticals by capillary electrophoresis and contains several hundred references to specific applications and methods. The main purpose of the book is to present the application possibilities of CE an therefore tabulated application data are provided. Chapters of the book are devoted to providing details of individual application areas such as chiral analysis, determination of drug related impurities, determination of drug counter-ions, drug residue monitoring and main component assay. An introductory chapter provides theoretical background to CE an related techniques. A chapter is dedicated to capillary electrochromatography which highlights the importance this technique currently possesses. Successful regulatory acceptance of CE methods is also described. A comprehensive chapter covers method validation aspects. Other chapters include discrete areas such as the use of non-aqueous solvents, forensic applications of CE, the application of experimental designs, determination of drugs in biofluids, and the analysis of vitamins by CE.
Download or read book Micro Process Engineering 3 Volume Set written by Volker Hessel and published by John Wiley & Sons. This book was released on 2009-03-23 with total page 1413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This three-volume handbook provides an overview of the key aspects of micro process engineering. Volume 1 covers the fundamentals, operations and catalysts, volume 2 examines devices, reactions and applications, with volume 3 rounding off the trilogy with system, process and plant engineering. Fluid dynamics, mixing, heat/mass transfer, purification and separation microstructured devices and microstructured reactors are explained in the first volume. Volume 2 segments microreactor design, fabrication and assembly, bulk and fine chemistry, polymerisation, fuel processing and functional materials into understandable parts. The final volume of the handbook addresses microreactor systems design and scale-up, sensing, analysis and control, chemical process engineering, economic and eco-efficiency analyses as well as microreactor plant case studies in one book. Together, this 3-volume handbook explains the science behind micro process engineering to the scale-up and their real life industrial applications.
Download or read book Separation Methods in Drug Synthesis and Purification written by Klara Valko and published by Elsevier. This book was released on 2000-10-13 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Separation Methods in Drug Synthesis and Purification
Download or read book The Essence of Chromatography written by C. F. Poole and published by Elsevier. This book was released on 2003 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Essence of Chromatography presents a comprehensive survey of modern chromatography and is intended as a suitable text for graduate level courses in the separation sciences and as a self-study guide for professional chromatographers wishing to refresh their background in this rapidly expanding field.This title is an effective replacement for Chromatography Today, written by the same author with Salwa K. Poole, which is considered to be one of the definitive chromatographic texts of the last decade. Its format is modular, with extensive cross-references to permit rapid location of re.
Download or read book Capillary Electrophoresis written by Philippe Schmitt-Kopplin and published by Springer Science & Business Media. This book was released on 2008-02-25 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a selection of current capillary electrophoresis methods used to separate representative types of molecules and particles and in combination with different detection techniques. It includes practical details which are hard to find elsewhere. The volume is intended for beginners in the field and provides an overview of the technique and a starting point for the exploration of the defined literature on different application topics.
Download or read book Handbook of Capillary and Microchip Electrophoresis and Associated Microtechniques written by James P. Landers and published by CRC Press. This book was released on 2007-12-18 with total page 1598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its third edition, this bestselling work continues to offer state-of-the-art information on the development and employment of capillary electrophoresis. With special emphasis on microseparations and microfluidics, it features new chapters describing the use of microchip electrophoresis and associated microtechniques, with a focus on the extraordinary breadth of work undertaken to expand CE methodologies in recent years. Enhanced by contributions from leading international experts, the Handbook of Capillary and Microchip Electrophoresis and Associated Microtechniques, Third Edition remains a seminal reference for the chemistry, biology, and engineering fields.
Download or read book Practical Capillary Electrophoresis written by Robert Weinberger and published by Academic Press. This book was released on 2000-02-16 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Capillary zone electrophoresis : basic concepts -- Capillary zone electrophoresis : methods development -- Capillary zone electrophoresis : secondary equilibrium, micelles, cyclodextrins, and related reagents -- Capillary isoelectric focusing -- Size separations in capillary gels and polymer networks -- Capillary electrochromatography -- Injection -- Detection -- Putting it all together.
Download or read book Additives in Polymers written by Jan C. J. Bart and published by John Wiley & Sons. This book was released on 2005-04-08 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: This industrially relevant resource covers all established and emerging analytical methods for the deformulation of polymeric materials, with emphasis on the non-polymeric components. Each technique is evaluated on its technical and industrial merits. Emphasis is on understanding (principles and characteristics) and industrial applicability. Extensively illustrated throughout with over 200 figures, 400 tables, and 3,000 references.
Download or read book Advanced Chromatographic and Electromigration Methods in BioSciences written by I. Mikšík and published by Elsevier. This book was released on 1998-09-28 with total page 1149 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with chromatographic and electrophoretic methods applied for the separation (quantitation and identification) of biologically relevant compounds. It is assumed that the potential reader is familiar with the basics of chromatographic and electromigration methods. Individual separation modes are dealt with to an extent which follows their applicability for biomedical purposes: liquid chromatography and electromigration methods are therefore highlighted. Each chapter is completed with a list of recent literature covering the 1987-1997 period, which can be used for further guidance of the reader in his/her own field. The chapters have been written by specialists in a particular area and with an emphasis on applications to the biomedical field. This implies that theoretical and instrumental aspects are kept to a minimum which allows the reader to understand the text. Considerable attention is paid to method selection, detection and derivatization procedures and troubleshooting. The majority of examples given represent the analyses of typical naturally-occurring mixtures. Adequate attention is paid to the role of the biological matrix and sample pretreatment, and special attention is given to forensic, toxicological and clinical applications. The book is completed with an extensive Index of Compounds Separated.
