Preparative Layer Chromatography explains how this method is used for separating large quantities of mixtures containing a wide variety of important compounds. It offers a broad review of preparative layer chromatography (PLC) applications and adaptable working procedures for microseparations involving organic, inorganic, and organometallic compoun
A practical how-to guide to all the basic techniques needed to practice thin layer chromatography in biochemical/pharmaceutical research and quality control. This updated edition presents the most current techniques as well as the hows and whys of TLC. Provides step-by-step methods for performing the separations as well as doing related tasks, such as applying the sample, selecting the mobile phase, and quantitation. Includes a special chapter on how to select solvents for the development of a chromatogram to separate specific individual components of a mixture.
In this third edition, more than 40 renowned authorities introduce and update chapters on the theory, fundamentals, techniques, and instrumentation of thin-layer chromatography (TLC) and high-performance thin-layer chromatography (HPTLC), highlighting the latest procedures and applications of TLC to 19 important compound classes and coverage of TLC applications by compound type. Easily adaptable to industrial scenarios , the Handbook of Thin-Layer Chromatography, Third Edition supports practical research strategies with extensive tables of data, offers numerous figures that illustrate techniques and chromatograms, and includes a glossary as well as a directory of equipment suppliers.
Over the last few years several new instrumental techniques have been introduced for chromatographie separations. In addition, rapid developments in existing methods, such as preparative HPLC, have taken place. Despite these advances, how ever, a handbook covering the various preparative aspects ofthe new separation tech niques does not exist. This book is an attempt to fill the gap and to present a compila tion of modern separation techniques that will be useful for researchers faced with day-to-day preparative problems. Numerous examples of separations have been selected in order to show the possibilities (and also the limits) of each technique treated. These are often either applications from our own laboratory or else they reflect the approach we have been following for the isolation of natural products from plant sourees. Owing to the large number of published papers and the diversity of secondary plant constituents. an exhaustive survey of the literature has not been undertaken. We hope, however, that the examples selected will suggest to the reader which technique(s) and which conditions to choose for a particular isolation problem in the field of natural products. For invaluable help in the preparation of the manuscript for this book, we would like to thank Corinne Appolonia and Christine Marston. Lausanne, November 1985 K. Hostettmann M. Hostettmann A . . Marston Foreword Although not many people realize this, isolation and purification of biologically active materials is becoming increasingly crucial.
Chromatographic & Electrophoretic Techniques, Fourth Edition, Volume I: Paper and Thin Layer Chromatography presents the methods of paper and thin layer chromatography. This book discusses the practical approach in the application of paper and thin layer chromatography techniques in the biological sciences. Organized into 18 chapters, this edition begins with an overview of the clinical aspects related to the detection of those metabolic diseases that can result in serious illness presenting in infancy and early childhood. This text then discusses the three major types of screening for inherited metabolic disorders in which paper or thin-layer chromatography are being used, including screening the healthy newborn population, screening the sick hospitalized child, and screening mentally retarded patients. Other chapters consider the procedures for thin layer chromatography. This book discusses as well the complexity of amino acid mixtures present in natural products. The final chapter deals with the detection of synthetic basic drugs. This book is a valuable resource for chemists and toxicologists.
Completely revised and substantially extended to reflect the developments in this fast-changing field. It retains the interdisciplinary approach that elegantly combines the chemistry and engineering involved to describe the conception and improvement of chromatographic processes. It also covers recent advances in preparative chromatographic processes for the separation of "smaller" molecules using standard laboratory equipment as well as the detailed conception of industrial chemical plants. The increase in biopharmaceutical substances is reflected by new and revised chapters on different modifications of continuous chromatography as well as ion-exchange chromatography and other separation principles widely used in biochromatography. Following an introductory section on the history of chromatography, the current state of research and the design of chromatographic processes, the book goes on to define the general terminology. There then follow sections on stationary phases, selection of chromatographic systems and process concepts. A completely new chapter deals with engineering and operation of chromatographic equipment. Final chapters on modeling and determination of model parameters as well as model based design, optimization and control of preparative chromatographic processes allow for optimal selection of chromatographic processes. Essential for chemists and chemical engineers in the chemical, pharmaceutical, and food industries.
Thin-layer chromatography (TLC) is widely used particularly for pharmaceutical and food analysis. While there are a number of books on the qualitative identification of chemical substances by TLC, the unique focus here is on quantitative analysis. The authors describe all steps of the analytical procedure, beginning with the basics and equipment for quantitative TLC followed by sample pretreatment and sample application, development and staining, scanning, and finally statistical and chemometric data evaluation and validation. An important feature is the coverage of effect-directed biological detection methods. Chapters are organized in a modular fashion facilitating the easy location of information about individual procedural steps.
Thin-layer chromatography (TLC) is a powerful, fast and inexpensive analytical method. It has proven its usefulness in pharmaceutical, food and environmental analysis. This new edition of the practical TLC guide features a completely revised chapter on documentation, now including the use of digital cameras. Selected new sorbents and instruments are also introduced. Why has the prior edition been successful? All steps of the analytical procedure are clearly explained, starting with the choice of a suitable TLC technique and ending with data evaluation and documentation. Special emphasis is put on the proper choice of materials for TLC. Properties and functions of various materials and the TLC equipment are described, covering e. g. precoated layers, solvents and developing chambers, including information on suppliers. Many practical hints for trouble shooting are given. All this is illustrated with numerous coloured figures. How to use TLC in compliance with GLP/GMP regulations is described in detail, including the required documentation. Therefore the reader can very easily compile his own standard operating procedures.
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.
