Download or read book Computer assisted Method Development for High performance Liquid Chromatography written by Joseph L. Glajch and published by Elsevier Publishing Company. This book was released on 1990 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the use of the computer as an aid in selecting adequate or optimum conditions for a given analytical separation. Originally published as Volume 485 of the Journal of Chromatography, it has now been reprinted in book form, since the information is so useful that many chromatographers want a copy readily available in the lab. An extensive Introduction is added to the book edition. This surveys the field and refers to the pages where particular items are discussed in the book. The addition of a Glossary of Terms, an Author Index and a Subject Index make this book an invaluable source of easily consulted information for the practising chromatographer. For the purpose of this book, computer-assisted method development will be limited to specific procedures which are intended to be used with a computer - rather than their manually applied precursors. In that sense, the subject can be considered to have begun around 1980. The ongoing, intense research activity into various forms of computer assisted HPLC method development provides the assurance that this approach can really assist the practical chromatographer working in an industrial laboratory.

Download or read book Software assisted Method Development In High Performance Liquid Chromatography written by Szabolcs Fekete and published by World Scientific. This book was released on 2018-08-01 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The book is a useful contribution in the field of HPLC, and may represent a valuable tool for chromatography practitioners in different fields, as well as teachers and instructors. The 12 chapters provide comprehensive insights of current day retention and resolution modelling in HPLC, and its applications for small and large molecule analysis. It may be a useful reference for specialists in pharmaceuticals but not limited to … It may be a valuable resource to assist scientists involved in method development, aiming to achieve the best results with reduced costs, time, and efforts.'Analytical and Bioanalytical ChemistryThis handbook gives a general overview of the possibilities in recent developments in chromatographic retention modeling. As a result of the latest developments in modeling software, several new features are now accessible, opening a new level in HPLC method development.Many of these current possibilities in software assisted liquid chromatographic method modeling for analytical purposes are presented. Several modes of chromatography, including Reversed-Phase Liquid Chromatography (RPLC), Ion Exchange Chromatography (IEX), Hydrophobic Interaction Chromatography (HIC), and Hydrophilic Interaction Liquid Chromatography (HILIC) are explained in detail. For all these chromatographic modes, the most important variables for tuning retention and selectivity are exposed.Beside the industrial and practical benefits of retention modeling, the possibilities in teaching and education are also illustrated. Finally, numerous representative industrial examples are shown, to highlight the benefits, time and cost savings offered by state-of-the-art software assisted HPLC method development.

Download or read book Practical HPLC Method Development written by Lloyd R. Snyder and published by John Wiley & Sons. This book was released on 2012-12-03 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revision brings the reader completely up to date on the evolving methods associated with increasingly more complex sample types analyzed using high-performance liquid chromatography, or HPLC. The book also incorporates updated discussions of many of the fundamental components of HPLC systems and practical issues associated with the use of this analytical method. This edition includes new or expanded treatments of sample preparation, computer assisted method development, as well as biochemical samples, and chiral separations.

Download or read book Dry Lab Modeling Computer Assisted Method Develoment and Robustness Validation for the Seperation sic of Nine Pharmaceutical Active Ingredients Using Gradient Elution Reversed phase Separation written by Shaista Khan and published by . This book was released on 2017 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: "High performance liquid chromatography (HPLC) method development is a technique for drug analysis that is a time consuming process. To prevent the need for a trial and error process, one can use a computer assisted method. In this thesis, we report about the use of Dry Lab to develop and optimize reverse phase liquid chromatography method to separate the following 10 drugs: 1. Clonidine 2. Gatifloxacin 3. Hydrochlorothizaide 4. Triprolidine 5. Fluoconozole 6. Trazodone 7. Pantaeprozole 8. X-Drug 9. Rivarzaban and 10. Ketorolac. Chromatographic separation of mixture of the above drugs was achieved by applying Gradientelution technique at a flow rate of 1.0 ml/min. The organic solvent of choice was ACN and the mobile phase was optimized at a composition of 30% ACN and 70% buffered deionized water. The best suited buffer was a monobasic potassium phosphate salt at a concentration of 25 mm and the mobile phase pH was set 2.88 pH. The separation was performed on a reversed phase, silica based, C8column(250x4.6mm) made by Waters Corporation®, with a particle size of 5 μm. The column temperatures were controlled at 35°C and 55°C; the UV absorption wavelength initially was set at 260, 267 and 290nm, and finally 260nm. The injected volume of a mixture of the above drugs was 10 μl and the total run time for the method was 24 minutes. The method was validated within ICH and FDA guidelines."--

Download or read book Introduction to Modern Liquid Chromatography written by Lloyd R. Snyder and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest edition of the authoritative reference to HPLC High-performance liquid chromatography (HPLC) is today the leading technique for chemical analysis and related applications, with an ability to separate, analyze, and/or purify virtually any sample. Snyder and Kirkland's Introduction to Modern Liquid Chromatography has long represented the premier reference to HPLC. This Third Edition, with John Dolan as added coauthor, addresses important improvements in columns and equipment, as well as major advances in our understanding of HPLC separation, our ability to solve problems that were troublesome in the past, and the application of HPLC for new kinds of samples. This carefully considered Third Edition maintains the strengths of the previous edition while significantly modifying its organization in light of recent research and experience. The text begins by introducing the reader to HPLC, its use in relation to other modern separation techniques, and its history, then leads into such specific topics as: The basis of HPLC separation and the general effects of different experimental conditions Equipment and detection The column—the "heart" of the HPLC system Reversed-phase separation, normal-phase chromatography, gradient elution, two-dimensional separation, and other techniques Computer simulation, qualitative and quantitative analysis, and method validation and quality control The separation of large molecules, including both biological and synthetic polymers Chiral separations, preparative separations, and sample preparation Systematic development of HPLC separations—new to this edition Troubleshooting tricks, techniques, and case studies for both equipment and chromatograms Designed to fulfill the needs of the full range of HPLC users, from novices to experts, Introduction to Modern Liquid Chromatography, Third Edition offers the most up-to-date, comprehensive, and accessible survey of HPLC methods and applications available.

Download or read book Preparative Chromatography written by H. Schmidt-Traub and published by John Wiley & Sons. This book was released on 2012-09-27 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Computer Aided HPLC Method Development written by Darren Hassey and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Performance Gradient Elution written by Lloyd R. Snyder and published by John Wiley & Sons. This book was released on 2007-01-09 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Computer assisted Method Development in Chromatography written by and published by . This book was released on 1989 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Performance Liquid Chromatography in Phytochemical Analysis written by Monika Waksmundzka-Hajnos and published by CRC Press. This book was released on 2010-11-08 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: The powerful, efficient technique of high performance liquid chromatography (HPLC) is essential to the standardization of plant-based drugs, identification of plant material, and creation of new herbal medicines. Filling the void in this critical area, High Performance Liquid Chromatography in Phytochemical Analysis is the first book to give a comp

Download or read book High Performance Liquid Chromatography in Pesticide Residue Analysis written by Tomasz Tuzimski and published by CRC Press. This book was released on 2015-12-01 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: HPLC is the principal separation technique for identification of the pesticides in environmental samples and for quantitative analysis of analytes. At each stage of the HPLC procedure, the chromatographer should possess both the practical and theoretical skills required to perform HPLC experiments correctly and to obtain reliable, repeatable, and reproducible results. Developed to serve as a detailed practical guide, High Performance Liquid Chromatography in Pesticide Residue Analysis is a comprehensive source of information and training on state-of-the-art pesticide residue methods performed with the aid of HPLC. The book presents the pros and cons of HPLC as a flexible and versatile separation and analysis tool with multiple purposes and advantages in investigations of pesticides for food and plant drugs standardization, promotion of health, protection of new herbal medicines, and more.

Download or read book Multidimensional Liquid Chromatography written by Steven A. Cohen and published by John Wiley & Sons. This book was released on 2008-05-09 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multidimensional Liquid Chromatography (MDLC) is a very powerful separation technique for analyzing exceptionally complex samples in one step. This authoritative reference presents a number of recent contributions that help define the current art and science of MDLC. Topics covered include instrumentation, theory, methods development, and applications of MDLC in the life sciences and in industrial chemistry. With the information to help you perform very difficult separations of complex samples, this reference includes chapters contributed by leading experts or teams of experts.

Download or read book Computer Aided Pharmaceutics and Drug Delivery written by Vikas Anand Saharan and published by Springer Nature. This book was released on 2022-05-30 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the role of computer-assisted techniques for discovering, designing, optimizing and manufacturing new, effective, and safe pharmaceutical formulations and drug delivery systems. The book discusses computational approaches, statistical modeling and molecular modeling for the development and safe delivery of drugs in humans. The application of concepts of QbD (Quality by Design), DoE (Design of Experiments), artificial intelligence and in silico pharmacokinetic assessment/simulation have been made a lot easier with the help of commercial software and expert systems. This title provides in-depth knowledge of such useful software with illustrations from the latest researches. The book also fills in the gap between pharmaceutics and molecular modeling at micro, meso and maro scale by covering topics such as advancements in computer-aided Drug Design (CADD), drug-polymer interactions in drug delivery systems, molecular modeling of nanoparticles and pharmaceutics/bioinformatics. This book provides abundant applications of computers in formulation designing and characterization are provided as examples, case studies and illustrations. Short reviews of software, databases and expert systems have also been added to culminate the interest of readers for novel applications in formulation development and drug delivery. Computer-aided pharmaceutics and drug delivery is an authoritative reference source for all the latest scholarly update on emerging developments in computed assisted techniques for drug designing and development. The book is ideally designed for pharmacists, medical practitioners, students and researchers.

Download or read book Chromatography written by James M. Miller and published by John Wiley & Sons. This book was released on 2005-12-16 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of Chromatography: Concepts and Contrasts, published in 1988, was one of the first books to discuss all the different types of chromatography under one cover. The second edition continues with these principles but has been updated to include new chapters on sampling and sample preparation, capillary electrophoresis and capillary electrochromatography (CEC), chromatography with mass spec detection, and industrial and governmental practices in regulated industries. Covers extraction, solid phase extraction (SPE), and solid phase microextraction (SPME), and introduces mass spectrometry Updated with the latest techniques in chromatography Discusses both liquid chromatography (LC)and gas chromatography(GC)

Download or read book Retention and Selectivity in Liquid Chromatography written by R.M. Smith and published by Elsevier. This book was released on 1995-01-13 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together a number of studies which examine the ways in which the retention and selectivity of separations in high-performance liquid chromatography are dependent on the chemical structure of the analytes and the properties of the stationary and mobile phases. Although previous authors have described the optimisation of separations by alteration of the mobile phase, little emphasis has previously been reported of the influence of the structure and properties of the analyte.The initial chapters describe methods based on retention index group increments and log P increments for the prediction of the retention of analytes and the ways in which these factors are influenced by mobile phases and intramolecular interactions. The values of a wide range of group increments in different eluents are tabulated.Different scales of retention indices in liquid chromatography are described for the comparison of separations, the identification of analytes and the comparison of stationary phases. Applications of these methods in the pharmaceutical, toxicology, forensic, metabolism, environmental, food and other fields are reviewed. The effects of different mobile phases on the selectivity of the retention indices are reported. A compilation of sources of reported retention index values are given.Methods for the comparison of stationary phases based on the interactions of different analytes are covered, including lipophilic and polar indices, shape selectivity comparisons, their application to novel stationary phases, and chemometric methods for column comparisons.

Download or read book HPLC for Pharmaceutical Scientists written by Yuri V. Kazakevich and published by John Wiley & Sons. This book was released on 2007-02-16 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Advances in Chromatography written by Nelu Grinberg and published by CRC Press. This book was released on 2019-02-07 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than five decades, scientists and researchers have relied on the Advances in Chromatography series for the most up-todate information on a wide range of developments in chromatographic methods and applications. The clear presentation of topics and vivid illustrations for which this series has become known makes the material accessible and engaging to analytical, biochemical, organic, polymer, and pharmaceutical chemists at all levels of technical skill. Key Features: Includes a chapter dedicated to Izaak Maurits Kolthoff, offering a unique look at his non-professional life as well as his impact and legacy in Analytical Chemistry. Discusses recent advances in two-dimensional liquid chromatography for the characterization of monoclonal antibodies and other therapeutic proteins. Reviews solvation processes, methodologies of their measurement, and parameters influenced solvation Explores recent advances in TLC analysis of natural colorings, determination of synthetic dyes, and determination of EU-permitted natural colors, in foods. Offers comprehensive and critical insights on the key aspects of CE-MS analysis of intact proteins