A New Post-column Reactor-laser Induced Fluorescence Detector for Capillary Electrophoresis PDF Download
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Author:
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Languages : en
Pages : 43
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Book Description
Capillary zone electrophoresis (CZE), a powerful separation method based on the differential migration of charged species under the influence of an electric field, has been widely used for separations covering from small ions to big biomolecules. Chapter 1 describes the method, then discusses detection of the separated analytes by laser induced fluorescence and by chemical derivatization, and the use of O-phthaldialdehyde (OPA) as a post-column reagent. Chapter 2 describes a post-column reactor which uses two narrow bore capillaries connected coaxially. This reactor differs from other coaxial reactors in terms of capillary dimensions, reagent flow control, ease of construction and most importantly, better limits of detection. The derivatization reagent is electroosmotically driven into the reaction capillary and the reagent flow rate is independently controlled by a high voltage power supply. Amino acids, amines and proteins, derivatized by OPA/2-mercaptoethanol using this post-column reactor coupled with LIF detection, show low attomole mass limits of detection, and for the first time, the authors demonstrate single cell capability with a post-column derivatization scheme. The single cell capability shows that this reactor could find applications in assaying non-fluorescent or electrochemically inactive components in individual biological cells in the future.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
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Book Description
Capillary zone electrophoresis (CZE), a powerful separation method based on the differential migration of charged species under the influence of an electric field, has been widely used for separations covering from small ions to big biomolecules. Chapter 1 describes the method, then discusses detection of the separated analytes by laser induced fluorescence and by chemical derivatization, and the use of O-phthaldialdehyde (OPA) as a post-column reagent. Chapter 2 describes a post-column reactor which uses two narrow bore capillaries connected coaxially. This reactor differs from other coaxial reactors in terms of capillary dimensions, reagent flow control, ease of construction and most importantly, better limits of detection. The derivatization reagent is electroosmotically driven into the reaction capillary and the reagent flow rate is independently controlled by a high voltage power supply. Amino acids, amines and proteins, derivatized by OPA/2-mercaptoethanol using this post-column reactor coupled with LIF detection, show low attomole mass limits of detection, and for the first time, the authors demonstrate single cell capability with a post-column derivatization scheme. The single cell capability shows that this reactor could find applications in assaying non-fluorescent or electrochemically inactive components in individual biological cells in the future.
Author: Liling Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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Book Description
Author:
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Category :
Languages : en
Pages : 42
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Book Description
Capillary electrophoresis with laser induced fluorescence detection (CE-LIF) is one of the alternative methods being developed for fast and sensitive assays of proteins and peptides. This report summarizes CE-LIF instrument development, efforts at labelling proteins, tests conducted to prove the applicability of CE-LIF to the analysis of samples, and results of a comparison of CE-LIF with some other techniques. Appendices include an instrument operating procedure and a paper that summarizes the experimental details of the protein labelling procedure and a CE-LIF technique for sub-nanomolar assay of proteins.
Author: S.F.Y. Li
Publisher: Elsevier
ISBN: 0080858600
Category : Science
Languages : en
Pages : 615
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Book Description
Capillary Electrophoresis (CE) has had a very significant impact on the field of analytical chemistry in recent years as the technique is capable of very high resolution separations, requiring only small amounts of samples and reagents. Furthermore, it can be readily adapted to automatic sample handling and real time data processing. Many new methodologies based on CE have been reported. Rapid, reproducible separations of extremely small amounts of chemicals and biochemicals, including peptides, proteins, nucleotides, DNA, enantiomers, carbohydrates, vitamins, inorganic ions, pharmaceuticals and environmental pollutants have been demonstrated. A wide range of applications have been developed in greatly diverse fields, such as chemical, biotechnological, environmental and pharmaceutical analysis.This book covers all aspects of CE, from the principles and technical aspects to the most important applications. It is intended to meet the growing need for a thorough and balanced treatment of CE. The book will serve as a comprehensive reference work. Both the experienced analyst and the newcomer will find the text useful.
Author: Patrick Camilleri
Publisher: CRC Press
ISBN: 9780849391279
Category : Medical
Languages : en
Pages : 586
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Book Description
The importance of capillary electrophoresis (CE) as an analytical tool has increased dramatically over the last ten years. It has changed from being an exploratory technique, mainly of academic interest, to one that is applied to solve "real" analytical problems. CE is easily adapted to its various modes of operation, often requiring little more than a change of the buffer solution, and is quickly becoming the preferred technique when analyzing minute amounts of available material. Featuring new chapters on CE analysis of inorganic ions and carbohydrates, the new edition of Capillary Electrophoresis not only presents this method as an academic tool, but also provides applications for solving "real-world" analytical problems. This updated Second Edition reflects the increasing use of CE over the last 10 years, how it is being applied, and the basic theoretical aspects of the separation and detection methodology of CE. Capillary Electrophoresis: Theory and Practice will appeal to students and professionals of analytical chemistry, physical chemistry, biochemistry, and biotechnology and includes suitable experiments designed to be attempted by university or college students, or anyone else wishing to familiarize themselves with CE.
Author: John Emerson Kuo
Publisher:
ISBN:
Category :
Languages : en
Pages : 336
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Book Description
Author: James P. Landers
Publisher: CRC Press
ISBN: 9780849324987
Category : Medical
Languages : en
Pages : 918
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Book Description
Because new information was discovered at an incredible rate since the publication of the successful first edition of this Handbook, this fully updated second edition covers all areas of interest in the field of capillary electrophoresis (CE). A relatively new technology, CE is a principle method for studying the physicochemical properties of proteins, peptides, and other macromolecules. Where applicable, the 30 chapters provide basic underlying theories as well as application-oriented aspects of each technique.Keep up with all the developments in this growing field with the Handbook of Capillary Electrophoresis, Second Edition - a complete guide to the fundamentals of CE and the latest research. The chapters are organized into five units: Modes: Presents a theoretical development of the basic principles governing separation with several modes, including CEC, and discusses their practical aspects. Analyte: Applies CE to the analysis of a specific class of analytes, including organic and inorganic ions, pharmaceuticals, glycoconjugates, peptides, proteins, and DNA fragments. Fundamental Aspects of CE: Technique-oriented information for the practitioner, including the importance of the sample matrix, on-line preconcentration of samples, modes of detection, and specific aspects of CE data analysis. Applications of CE: Includes single cell analysis, CE in DNA sequencing, CE as a clinical diagnostic tool, identifying and quantifying drugs, and for characterizing interacting species. Specialized Aspects of CE: Discusses interfacing CE with mass spectrometry, high-volume throughput continuous CE, microchip CE, control of EOF, and much more. The Handbook of Capillary Electrophoresis, Second Edition, pulls together diverse areas and applications of CE, resulting in an excellent tool for scientists involved in biotechnology and clinical chemistry, as well as the pharmaceutical, bioscience, chemical, and instrument-manufacturing industries. With an applications-oriented focus, the handbook is also a superb manual for workshops, seminars, and graduate courses in separation science.
Author: Tuan Vo-Dinh
Publisher: CRC Press
ISBN: 0203008995
Category : Medical
Languages : en
Pages : 1864
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Book Description
A wide variety of biomedical photonic technologies have been developed recently for clinical monitoring of early disease states; molecular diagnostics and imaging of physiological parameters; molecular and genetic biomarkers; and detection of the presence of pathological organisms or biochemical species of clinical importance. However, available in
Author:
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ISBN:
Category :
Languages : en
Pages : 8
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Author: Tuan Vo-Dinh
Publisher: CRC Press
ISBN: 1439863199
Category : Medical
Languages : en
Pages : 2465
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Book Description
This handbook presents the most recent technological advances and applications in the areas of biomedical photonics. This second edition contains introductory material and covers the state-of-the-art methods and instrumentation for biomedical photonic technologies. It integrates interdisciplinary research and development critically needed for scientists, engineers, manufacturers, teachers, students, and clinical providers to learn about the most recent advances and predicted trends in instrumentation and methods as well as clinical applications in important areas of biomedical photonics. Extensive references are provided to enhance further study.
