Sunday, June 22, 2008
HPLC and CE: Principles and Practice presents the latest information on the most powerful separation techniques available: high-performance liquid chromatography (HPLC) and capillary electrophoresis (CE). Fundamental theory, instrumentation, modes of operation, and optimization of separations are presented in a concise, non-technical style to help the user in choosing the appropriate technique quickly and accurately. Well- illustrated and containing convenientend-of-chapter summaries of the major concepts, the book provides in-depth coverage of trouble-shooting, improvement of resolution, data manipulation, selectivity, and sensitivity.
Graduate students, technicians, and researchers who must use separations with little or no background in analytical chemistry can overcome separation anxiety and get started in obtaining the best possible separations in minimal time. The book will alsobe useful to analytical chemists who need a better understanding of theory and processes.
* Fully up-to-date information on both HPLC and CE includes troubleshooting and comparisons of the two techniques
* Applicable to a wide variety of separation problems
* Covers basic concepts governing any separation as well as instrumentation and how to use it
* Helps the user to obtain optimal resolution in minimal time
* Contains information on special procedures such as chiral separations, affinity chromatography, and sample preparation
* Includes information on upcoming trends such as miniaturization
* Major concepts in each chapter are organized to allow access to information easily and quickly
* Contains practical bibliography for accessing the literature
The use of High Performance Liquid Chromatography (HPLC) techniques in the study of enzymatic reactions has grown significantly since the publication of the first edition of this highly successful book: the role of enzymes in biological research has expanded; the application of HPLC and enzymes has extended to more disciplines; advances in separation techniques and instrumentation have increased the capability of HPLC; and the discovery of new enzymes has spawned new methods of analysis.
High Performance Liquid Chromatography in Enzymatic Analysis, Second Edition addresses these developments in its coverage of the refinements of HPLC methods and their use in a wide range of laboratory applications. It offers the same practical approach found in the first edition, incorporates a wealth of new information into existing chapters, and adds new chapters to deal with new applications, including capillary electrophoresis, forensic chemistry, microdialysis, and the polymerase chain reaction. Topics include:
* Application of HPLC to the assay of enzymatic activities
* Concepts and principles of HPLC, including the latest technological advances
* Concepts and principles of capillary electrophoresis (CE)
* Strategy for design of an HPLC/CE system for assay of enzyme activity
* Preparation of enzymatic activities from tissues and single cells
* Analysis of enzymatic activities in body fluids, including chromatobiosis
* HPLC for the identification of new enzymatic activities
* Fundamentals of the polymerase chain reaction
* HPLC in forensics
* Survey of enzymatic activities assayed by the HPLC method, including many new categories
* Multienzyme systems, including many new examples
* HPLC in the analysis of contaminated food
"It is the ability of HPLC to accomplish separations completely and rapidly that led to its original application to problems in the life sciences, particularly those related to purification. An analysis of the literature revealed that this technique was used primarily for the purification of small molecules, macromolecules such as peptides and proteins, and more recently, antibodies. This application to purification has all but dominated the use of the method, and there has been a plethora of books, symposia, and conferences on the use of HPLC for these purposes. However, it was only a matter of time before others began to look beyond and to explore the possibilities that result from the capacity to make separations quickly and efficiently." --from the preface to the First Edition
Easy to read and full of practical advice and hundreds of diagrams and examples, High Performance Liquid Chromatography in Enzymatic Analysis, Second Edition is an invaluable resource for students, researchers, and laboratory workers in analytical chemistry and biochemistry, molecular biology and cell biology, and for anyone interested in keeping up with this fast-growing field.
Gradient elution demystified
Of the various ways in which chromatography is applied today, few have been as misunderstood as the technique of gradient elution, which presents many challenges compared to isocratic separation. When properly explained, however, gradient elution can be less difficult to understand and much easier to use than often assumed.
Written by two well-known authorities in liquid chromatography, High-Performance Gradient Elution: The Practical Application of the Linear-Solvent-Strength Model takes the mystery out of the practice of gradient elution and helps remove barriers to the practical application of this important separation technique. The book presents a systematic approach to the current understanding of gradient elution, describing theory, methodology, and applications across many of the fields that use liquid chromatography as a primary analytical tool.
This up-to-date, practical, and comprehensive treatment of gradient elution:
* Provides specific, step-by-step recommendations for developing a gradient separation for any sample
* Describes the best approach for troubleshooting problems with gradient methods
* Guides the reader on the equipment used for gradient elution
* Lists which conditions should be varied first during method development, and explains how to interpret scouting gradients
* Explains how to avoid problems in transferring gradient methods
With a focus on the use of linear solvent strength (LSS) theory for predicting gradient LC behavior and separations by reversed-phase HPLC, High-Performance Gradient Elution gives every chromatographer access to this useful tool.
This Second Edition of the classic handbook details how to set up an HPLC system that capitalizes on the latest innovations. It covers new techniques in high-temperature, micro-flow, and ultra-fast chromatography, the linking of an HPLC to a mass spectrometer, and more. Complete with a CD-ROM and appendices, this guide has everything chromatographers need to know to confidently separate, identify, purify, and quantify compounds.
onald Armstrong updates and expands his highly praised Free Radical and Antioxidant Protocols (Humana, 1998) with a collection of new and valuable methods for evaluating the pertubations in cell function resulting from increased oxidative stress. Presented in a user-friendly, step-by-step format, these readily reproducible techniques cover both free radical-derived and antioxidant biomarkers. The methodologies demonstrated include ELISA, HPLC, infrared spectroscopy, gas chromatography-mass spectroscopy, immunoblotting, electroelution fractionation, isoelectric focusing, voltametry, and electron paramagnetic resonance imaging. Special emphasis is given to the separation of complex mixtures of plant antioxidants, soft drug design to protect from toxic oxidative metabolites, in vitro oxidation conditions, and correcting for random measurement error to improve statistical interpretation. A soon-to-be-published companion volume, Oxidants and Antioxidants: Ultrastructural and Molecular Biology Protocols (0-89603-851-3), contains state-of-the-art molecular and ultrastructural methods that expand the total number of protocols to 109 assays.
Surpassing its bestselling predecessors, this thoroughly updated third edition is designed to be a powerful training tool for entry-level chemistry technicians. Analytical Chemistry for Technicians, Third Edition explains analytical chemistry and instrumental analysis principles and how to apply them in the real world. A unique feature of this edition is that it brings the workplace of the chemical technician into the classroom. With over 50 workplace scene sidebars, it offers stories and photographs of technicians and chemists working with the equipment or performing the techniques discussed in the text. It includes a supplemental CD that enhances training activities. A CD containing a sample LIMS system is also available to professors who adopt this book. The author incorporates knowledge gained from a number of American Chemical Society and PITTCON short courses and from personal visits to several laboratories at major chemical plants, where he determined firsthand what is important in the modern analytical laboratory. The book includes more than sixty experiments specifically relevant to the laboratory technician, along with a Questions and Problems section in each chapter. Analytical Chemistry for Technicians, Third Edition continues to offer the nuts and bolts of analytical chemistry while focusing on the practical aspects of training.
J.D. Hepworth, "Aromatic Chemistry (Tutorial Chemistry Texts) (2002)"
The Royal Society of Chemistry | ISBN:0854046623 | 2002 | HTML & PDF | 192 Pages | 30.2 Mb
Fathi Habashi, «Handbook of Extractive Metallurgy»
Wiley-VCH | ISBN:3527287922 | 1998 | HTML & PDF | 2000 Pages | 187,9 Mb
Marvin McMaster, HPLC: A Practical User's Guide, 2nd Edition
Wiley | ISBN: 9780471754015 | 2007 | HTML & PDF | 238 Pages | 9.2 Mb
A unique approach to solving HPLC problems.
Everyone who bought "Problem Solving in HPLC" by Stavros Kromidas will equally benefit from nearly 100 new practical examples for optimization, trouble-shooting, and instrument performance given in this sequel.
The author provides
- guidance for selecting and evaluating methods, intstruments and columns,
- practical help with everyday trouble-shooting,
- advice for optimizing separations, always explaining the reason why.
In each case the problem, the solution and the conclusions are presented over a maximum of 4 pages, and in addition the book contains manufacturers' addresses, references, data tables and checklists.
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High pressure, or high performance, liquid chromatography (HPLC) is the method of choice for checking purity of new drug candidates, monitoring changes during scale up or revision of synthetic procedures, evaluating new formulations, and running control/assurance of the final drug product. HPLC Method Development for Pharmaceuticals provides an extensive overview of modern HPLC method development that addresses these unique concerns. Includes a review and update of the current state of the art and science of HPLC, including theory, modes of HPLC, column chemistry, retention mechanisms, chiral separations, modern instrumentation (including ultrahigh-pressure systems), and sample preparation. Emphasis has been placed on implementation in a pharmaceutical setting and on providing a practical perspective.
HPLC Method Development for Pharmaceuticals is intended to be particularly useful for both novice and experienced HPLC method development chemists in the pharmaceutical industry and for managers who are seeking to update their knowledge.
* Covers the requirements for HPLC in a pharmaceutical setting including strategies for software and hardware validation to allow for use in a regulated laboratory
* Provides an overview of the pharmaceutical development process (clinical phases, chemical and pharmaceutical development activities)
* Discusses how HPLC is used in each phase of pharmaceutical development and how methods are developed to support activities in each phase
Hands-on experts from academia and industry comprehensively describe how to successfully perform all the critical HPLC techniques needed for the analysis of peptides and proteins. The methods range from commonly used techniques to those for capillary to large-scale preparative isolation. The authors have also presented a number of specific applications as case studies to illustrate the analytical approaches to a particular separation or assay challenge, with examples drawn from contemporary fields in biochemistry and biotechnology.
Lets you target the specific information you need quickly and easily -so you can stay in the lab and out of the library. This invaluable database -available in print and electronic form -gives you fast, hands-on access to the most significant literature available on HPLC for the analysis of over 150 of the most frequently prescribed pharmaceutical compounds. Combining full descriptions of procedures with specially annotated references, HPLC Methods for Pharmaceutical Analysis helps you to identify the techniques that are relevant to your individual project needs -eliminating hours of tedious, time-consuming library research. Analytical chemists and researchers will find a battery of useful features that make this practical new resource a welcome addition to their reference library: Techniques for each compound are described in detail -enabling replication of a procedure without reference to the original publication
* Detailed procedures for each drug are listed together -making it easy to combine features of different methods into a customized approach
* Drug assay methods are provided for drugs in biological fluids such as blood or urine, as well as for bulk and formulated drugs
* Other key information includes chemical structures, molecular weights and formulas, CAS Registry Numbers, and cross-references to The Merck Index and Chemistry of Drug Synthesis
HPLC for Pharmaceutical Scientists is an excellent book for both novice and experienced pharmaceutical chemists who regularly use HPLC as an analytical tool to solve challenging problems in the pharmaceutical industry. It provides a unified approach to HPLC with an equal and balanced treatment of the theory and practice of HPLC in the pharmaceutical industry.
In-depth discussion of retention processes, modern HPLC separation theory, properties of stationary phases and columns are well blended with the practical aspects of fast and effective method development and method validation. Practical and pragmatic approaches and actual examples of effective development of selective and rugged HPLC methods from a physico-chemical point of view are provided.
This book elucidates the role of HPLC throughout the entire drug development process from drug candidate inception to marketed drug product and gives detailed specifics of HPLC application in each stage of drug development.
The latest advancements and trends in hyphenated and specialized HPLC techniques (LC-MS, LC-NMR, Preparative HPLC, High temperature HPLC, high pressure liquid chromatography) are also discussed.
Friday, June 20, 2008
This book answers two basic questions regarding chromatography; it focuses on how compounds can high-performance liquid be separated and on why particular compounds are separated by liquid chromatographic methods. It consists of six chapters: Basic Concepts of HPLC; Instrumentation: Preparation, Testing and Selectivity of Stationary Phase Materials; Selection of the Eluent; Separation Based on an Improved Column Efficiency; Influence of
Physical Chemistry on Separations in Liquid Chromatography. The focus is on the basic considerations in liquid chromatography rather than the applications but there are also sections on trouble-shooting. The book is concerned mainly with the selection of a packing material and the preparation of the eluent. Theoretical optimization is demonstrated using the chromatography of simple chemicals, to aid the understanding of liquid chromatography by graduate students. The examples given go beyond what can be found in general textbooks
on liquid chromatography. The separations can be easily understood from the differences in properties of familiar compounds known to undergraduate students.The chromatographic separations described are based on solubility using molecular properties. The selection of chromatographic mode and column is analysed using solubility parameters. The separation factor cc is described in detail by physical and chemical parameters. Discussion of instrumentation focuses on high-efficiency operation and is concerned with degassing, the time constant, flow cell design, connectors and trouble-shooting. Packing materials and their synthesis and surface modification, liquid chromatographic analysis of surface activity and the evaluation of packed columns, including the measurement of void volume, are also considered.
HPLC Made to Measure: A Practical Handbook for Optimization
The only topical HPLC book to focus on optimization, this volume addresses the needs of HPLC users who wish to constantly improve their methods, in particular in terms of throughput, accuracy and cost-effectiveness.
This handbook features contributions from such bestselling authors as John W. Dolan, Michael McBrien, Veronika R. Meyer, Uwe D. Neue, Lloyd R. Snyder, and Klaus K. Unger, as well as from scientists working for major companies, including Agilent, AstraZeneca, Merck, Schering, Tosoh Biosep, VWR, and Waters. It covers essential aspects of optimization in general, optimization in different LC-modi, hyphenated techniques and computer-aided optimization. The whole is rounded off with a section of user reports.
Development and Validation of HPLC Methods For Analytical And Preparative Purposes
Liquid chromatography (LC) is a separation method of great importance to the chemical, pharmaceutical and biotechnological industry. The principle is that a sample of a solution of the substances is injected into a column of an porous material (stationary phase) and a liquid (mobile phase) is pumped through the column. The separation of substances is based on differences in rates of migration through the column arising from different partition of the substances between the stationary and the mobile phase. Depending on the partition behavior of the different types of substances, these will elute at different times from the column outlet.