Chromatographic Science Series – serie

Shows how to choose the most effective techniques for assessing the toxicity of chemicals in both food and the environment. examines a wide range of volatile compounds from toxic aldehydes and pesticides to micotoxins and dioxins.

Considers three fundamental aspects of molecular interactions important in chromatography, taking care not to duplicate information readily available in other references. Surveys the basic factors involved in complex formation, which governs the retention mechanism and selectivity in either donor or

This book describes the various aspects of microbore column chromatography. It provides readers with an in-depth understanding of the supercritical fluid chromatography and microbore high-performance liquid chromatography.

This book discusses flow perturbation method, namely, the stopped-flow technique and the reversed-flow technique. It is directed to those who need an accurate method for the determination of a certain physicochemical quantity and to researchers working on the development of gas chromatography.

This book describes new gel permeation chromatography/liquid chromatography applications and techniques that will provide polymer scientists and practitioners with insight into the development of new polymers and plastics and improvement of existing materials.

This book covers a range of topics of interest to those involved in the fractionation and characterization of polymeric substances. It deals with problems that are encountered in modern gel permeation chromatography with dual detection when calculating average molecular weights.

Two-dimensional liquid chromatography (2D-LC) is finding increasingly wide application principally due to the analysis of mixtures of moderate to high complexity. Many industries are developing increasingly complex products that are challenging the separation capabilities of state-of-the-art 1D-LC and need new analytical methodologies with substantially more resolving power, and 2D-LC meets that need. This text, organized by two leaders in the field, establishes a sound fundamental basis for the principles of the technique, followed by a discussion of important practical considerations. The book begins with an introduction to multi-dimensional separations and a discussion of the history and development of the technique over the past 40 years, followed by several chapters that provide a theoretical basis for development of 2D-LC methods, including foundational concepts regarding separation complementarity, under-sampling, and dynamics of liquid chromatography separations. Instrumentation for 2D-LC is discussed extensively, including practical aspects such as interface selection and setup. Building on this foundation, two separate chapters are focused on method development for non-comprehensive and comprehensive separations, followed by a chapter dedicated to data analysis. Finally, applications of 2D-LC in several fields ranging from pharmaceutical analysis to polymer science are summarized.The book is an important resource for both students and practitioners who are already using 2D-LC or are interested in getting started in the field.Key Features:Demonstrates the conditions under which a 2D-LC method should be considered as an alternative to a 1D-LC methodEstablishes a sound fundamental basis of the principles of the technique, followed by guidelines for method optimizationProvides a single source for technical knowledge advances and practical guidance described in recent literatureAssists with the initial decision to develop a 2D-LC methodGuides the reader in developing a high-quality method that meets the needs of their application

Two-dimensional liquid chromatography (2D-LC) is finding increasingly wide application principally due to the analysis of mixtures of moderate to high complexity. Many industries are developing increasingly complex products that are challenging the separation capabilities of state-of-the-art 1D-LC and need new analytical methodologies with substantially more resolving power, and 2D-LC meets that need. This text, organized by two leaders in the field, establishes a sound fundamental basis for the principles of the technique, followed by a discussion of important practical considerations. The book begins with an introduction to multi-dimensional separations and a discussion of the history and development of the technique over the past 40 years, followed by several chapters that provide a theoretical basis for development of 2D-LC methods, including foundational concepts regarding separation complementarity, under-sampling, and dynamics of liquid chromatography separations. Instrumentation for 2D-LC is discussed extensively, including practical aspects such as interface selection and setup. Building on this foundation, two separate chapters are focused on method development for non-comprehensive and comprehensive separations, followed by a chapter dedicated to data analysis. Finally, applications of 2D-LC in several fields ranging from pharmaceutical analysis to polymer science are summarized.The book is an important resource for both students and practitioners who are already using 2D-LC or are interested in getting started in the field.Key Features:Demonstrates the conditions under which a 2D-LC method should be considered as an alternative to a 1D-LC methodEstablishes a sound fundamental basis of the principles of the technique, followed by guidelines for method optimizationProvides a single source for technical knowledge advances and practical guidance described in recent literatureAssists with the initial decision to develop a 2D-LC methodGuides the reader in developing a high-quality method that meets the needs of their application

Xenobiotics are chemical compounds foreign to a given biological system. In animals and humans, xenobiotics include drugs, drug metabolites, and environmental pollutants. In the environment, xenobiotics include synthetic pesticides, herbicides, and industrial pollutants. Many techniques are used in xenobiotics residue analysis; the method selected depends on the complexity of the sample, the nature of the matrix/analytes, and the analytical techniques available. This reference will help the analyst develop effective and validated analytical strategies for the analysis of hundreds of different xenobiotics on hundreds of different sample types, quickly, accurately and at acceptable cost.

Chemometrics uses advanced mathematical and statistical algorithms to provide maximum chemical information by analyzing chemical data, and obtain knowledge of chemical systems. Chemometrics significantly extends the possibilities of chromatography and with the technological advances of the personal computer and continuous development of open-source software, many laboratories are interested in incorporating chemometrics into their chromatographic methods. This book is an up-to-date reference that presents the most important information about each area of chemometrics used in chromatography, demonstrating its effective use when applied to a chromatographic separation.

There is a dramatic rise of novel drug use due to the increased popularity of so-called designer drugs. These synthetic drugs can be illegal in some countries, but legal in others and novel compounds unknown to drug chemistry emerge monthly. This thoughtfully constructed edited reference presents the main chromatographic methodologies and strategies used to discover and analyze novel designer drugs contained in diverse biological materials. The methods are based on molecular characteristics of the drugs belonging to each individual class of compounds, so it will be clear how the current methods are adaptable to future new drugs that appear in the market.

Planar Chromatography–Mass Spectrometry focuses on a relatively new approach to chemical analysis in general, and to separation science in particular. It is the first book to systemically cover the theoretical background, techniques, instrumentation, and practical applications of planar chromatography–mass spectrometry as a hyphenated tool of analytical chemistry. It also examines the high and as-yet unexploited potential of planar chromatography–mass spectrometry for analytical use in scientific investigations.This book overviews the combination of planar chromatography, a relatively simple and cost-effective separation step for determining complex mixtures of compounds, with mass spectrometry, an efficient, highly instrumental, and relatively expensive technique that enables rapid identification of separated chemical species. It covers electrophoretic–mass spectrometry methods and applications, which are considered planar chromatographic techniques and are increasingly being exploited in proteomic and molecular biology studies as well as for medical diagnostic purposes. It also provides a selection of applications, such as drug control and forensic and food analysis, including more difficult substances such as carbohydrates and lipids.The book advocates growth in using planar chromatography–mass spectrometry in laboratories that have appropriate equipment but have not yet employed the techniques in combination. It also describes the use of a relatively inexpensive commercial system that can be adopted by laboratories currently working without the coupled methodology. Aiming to improve power and efficiency when other analytical methods are inadequate, Planar Chromatography–Mass Spectrometry encourages separation science practitioners in academia and industry to combine the two methods for enhanced results.

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.

Used routinely in drug control laboratories, forensic laboratories, and as a research tool, thin layer chromatography (TLC) plays an important role in pharmaceutical drug analyses. It requires less complicated or expensive equipment than other techniques, and has the ability to be performed under field conditions. Filling the need for an up-to-date, complete reference, Thin Layer Chromatography in Drug Analysis covers the most important methods in pharmaceutical applications of TLC, namely, analysis of bulk drug material and pharmaceutical formulations, degradation studies, analysis of biological samples, optimization of the separation of drug classes, and lipophilicity estimation.The book is divided into two parts. Part I is devoted to general topics related to TLC in the context of drug analysis, including the chemical basis of TLC, sample pleparation, the optimization of layers and mobile phases, detection and quantification, analysis of ionic compounds, and separation and analysis of chiral substances. The text addresses the newest advances in TLC instrumentation, two-dimensional TLC, quantification by slit scanning densitometry and image analysis, statistical processing of data, and various detection and identification methods. It also describes the use of TLC for solving a key issue in the drug market—the presence of substandard and counterfeit pharmaceutical products.Part II provides an in-depth overview of a wide range of TLC applications for separation and analysis of particular drug groups. Each chapter contains an introduction about the structures and medicinal actions of the described substances and a literature review of their TLC analysis. A useful resource for chromatographers, pharmacists, analytical chemists, students, and R&D, clinical, and forensic laboratories, this book can be utilized as a manual, reference, and teaching source.

High performance liquid chromatography (HPLC) is one of the most widespread analytical and preparative scale separation techniques used for both scientific investigations and industrial and biomedical analysis. Now in its second edition, this revised and updated version of the Handbook of HPLC examines the new advances made in this field since the publication of the benchmark first edition twelve years ago. It reports detailed information on fundamental and practical aspects of HPLC related to conventional format and sophisticated novel approaches which have been developed to address a variety of separation problems in different fields.The latest conceptsNew concepts presented in this edition include monolithic columns, bonded stationary phases, micro-HPLC, two-dimensional comprehensive liquid chromatography, gradient elution mode, and capillary electromigration techniques. The book also discusses LC-MS interfaces, nonlinear chromatography, displacement chromatography of peptides and proteins, field-flow fractionation, retention models for ions, and polymer HPLC.Fundamentals and applicationsThe first section of the book explores emerging novel aspects of HPLC and related separation methods based on the differential velocity of analytes in a liquid medium under the action of either an electric field (capillary electromigration techniques) or a gravitational field (field-flow fractionation). The section focusing on applications highlights four significant areas in which HPLC is successfully employed: chiral pharmaceutical, environmental analysis, food analysis, and forensic science. Ideal for a widespread audienceExplanatory figures and tables supplement the text and clarify difficult concepts. Extensive references provide gateways to more focused study. Suitable for undergraduates or new practitioners interested in improving their knowledge on the current status and future trends of HPLC, the book is also a critical resource for researchers looking for solutions to complex separation problems or those who currently use HPLC either as an analytical or a preparative scale tool.

Thin layer chromatography (TLC) is increasingly used in the fields of plant chemistry, biochemistry, and molecular biology. Advantages such as speed, versatility, and low cost make it one of the leading techniques used for locating and analyzing bioactive components in plants.Thin Layer Chromatography in Phytochemistry is the first source devoted to supplying state-of-the-art information on TLC as it applies to the separation, identification, quantification, and isolation of medicinal plant components. Renowned scientists working with laboratories around the world demonstrate the applicability of TLC to a remarkable diversity of fields including plant genetics, drug discovery, nutraceuticals, and toxicology. Elucidates the role of plant materials in the pharmaceutical industry... Part I provides a practical review of techniques, relevant materials, and the particular demands for using TLC in phytochemical applications. The text explains how to determine the biological activity of metabolites and assess the effectiveness of herbal medicines and nutritional supplements. Part II concentrates on TLC methods used to analyze specific plant-based metabolite classes such as carbohydrates, proteins, alkaloids, flavonoids, terpenes, etc. Organized by compound type, each chapter discusses key topics such as sample preparation, plate development, zone detection, densitometry, and biodetection. Demonstrates practical methods that can be applied to a wide range of disciplines... From identification to commercial scale production and quality control, Thin Layer Chromatography in Phytochemistry is an essential bench-top companion and reference on using TLC for the study of plant-based bioactive compounds.

A constructive evaluation of the most significant developments in liquid chromatography–mass spectrometry (LC–MS) and its uses for quantitative bioanalysis and characterization for a diverse range of disciplines, Liquid Chromatography–Mass Spectrometry, Third Edition offers a well-rounded coverage of the latest technological developments and applications.As the technology itself has matured into a reliable analytical method over the last 15 years, the most exciting developments occur in LC–MS augments research into new applications. This edition places a stronger emphasis than previous editions on the impact of LC–MS methods, dedicating two-thirds of the text to small-molecule and biomolecular applications such as proteomics, pharmaceutical drug discovery and development, biochemistry, clinical analysis, environmental studies, and natural products research. Supported by the most relevant literature available, each chapter examines how the strategies, technologies, and recent advances—from sample pretreatment to data processing—in LC–MS helped to shape these disciplines. Featuring new chapters and extensive revisions throughout the book, Liquid Chromatography–Mass Spectrometry, Third Edition continues to provide scientists with a definitive guide and reference to the most important principles, strategies, and experimental precedents for applying LC–MS to their research.

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 compounds.The book contains theoretical background, chemical principles, and relevance of preparative layer chromatography (PLC) to a wide range of applications, particularly in the study of pharmaceuticals and biochemistry. Written by many of the best known and most knowledgeable specialists in the field, the chapters describe all the necessary techniques, current procedures, and superior strategies for selecting the most suitable eluents and designing application-specific PLC systems based on the data being sought. They provide comprehensive instructions, surrounding issues, and suggestions for optimizing optional working techniques within the framework of PLC. The book also provides a complete coverage of bulk sorbents and precoated chromatographic plates available on the international market.A comprehensive, yet accessible source of information, Preparative Layer Chromatography is a relevant and practical text for experienced as well as novice researchers and practitioners involved in analytical, environmental, geochemical, biological, medicinal, and pharmaceutical analysis.

The microfluidic lab-on-a-chip allows scientists to conduct chemical and biochemical analysis in a miniaturized format so small that properties and effects are successfully enhanced, and processes seamlessly integrated. This microscale advantage translates into greater sensitivity, more accurate results, and better information.Microfluidic Lab-on-a-Chip for Chemical and Biological Analysis and Discovery focuses on all aspects of the microfluidic lab-on-a-chip technologies and offers an overview of the available technology, its limitations, and its breakthroughs over the years. It emphasizes analytical applications of microfluidic technology and offers in-depth coverage of micromachining methods, microfluidic operations, chemical separations, sample preparation and injection methods, detection technology, and various chemical and biological analyses. Other topics of interest include the use of polymeric chips, fluid flow valve and control, single-cell analysis, DNA and RNA amplification techniques, DNA hybridization, immunoassays and enzymatic assays.Originally conceived as a single chapter published in Ewing's Analytical Instrumentation, this book is a gateway to the vast literature and conference proceedings on the topic. Microfluidic Lab-on-a-Chip for Chemical and Biological Analysis and Discovery expands upon its roots to present a comprehensive treatment of microfluidic lab-on-a-chip methods and applications for novices and advanced researchers alike.

This detailed handbook covers different chromatographic analysis techniques and chromatographic data for compounds found in air, water, and soil, and sludge. The new edition outlines developments relevant to environmental analysis, especially when using chromatographic mass spectrometric techniques. It addresses new issues, new lines of discussion, and new findings, and develops in greater detail the aspects related to chromatographic analysis in the environment. It also includes different analytical methodologies, addresses instrumental aspects, and outlines conclusions and perspectives for the future.

Shows how to choose the most effective techniques for assessing the toxicity of chemicals in both food and the environment. examines a wide range of volatile compounds from toxic aldehydes and pesticides to micotoxins and dioxins.

Provides practical information on the application of capillary electrophoresis (CE) to protein analysis, with an emphasis on developing and optimizing CE techniques in the laboratory. Includes separation methods bases on mass, charge, isoelectric point, molecular sieving, and affinity interactions.

This book describes new gel permeation chromatography/liquid chromatography applications and techniques that will provide polymer scientists and practitioners with insight into the development of new polymers and plastics and improvement of existing materials.

This book documents the principles of operation, the advantages and drawbacks, and the potential future of currently available liquid chromatographic detectors. In offering a snapshot of the current technology, it provides clear explanations and possible new horizons for both beginners and experts.

A constructive evaluation of the most significant developments in liquid chromatography–mass spectrometry (LC–MS) and its uses for quantitative bioanalysis and characterization for a diverse range of disciplines, Liquid Chromatography–Mass Spectrometry, Third Edition offers a well-rounded coverage of the latest technological developments and applications.As the technology itself has matured into a reliable analytical method over the last 15 years, the most exciting developments occur in LC–MS augments research into new applications. This edition places a stronger emphasis than previous editions on the impact of LC–MS methods, dedicating two-thirds of the text to small-molecule and biomolecular applications such as proteomics, pharmaceutical drug discovery and development, biochemistry, clinical analysis, environmental studies, and natural products research. Supported by the most relevant literature available, each chapter examines how the strategies, technologies, and recent advances—from sample pretreatment to data processing—in LC–MS helped to shape these disciplines. Featuring new chapters and extensive revisions throughout the book, Liquid Chromatography–Mass Spectrometry, Third Edition continues to provide scientists with a definitive guide and reference to the most important principles, strategies, and experimental precedents for applying LC–MS to their research.

This book covers a range of topics of interest to those involved in the fractionation and characterization of polymeric substances. It deals with problems that are encountered in modern gel permeation chromatography with dual detection when calculating average molecular weights.

This book informs the reader about the practical methods, possibilities, and limits of template chromatography. It shows the various techniques for immobilization of nucleic acids fragments, polynucleotides, and nucleic acids by which the desired separation of materials can be achieved.

This book gives the pertinent information on the high pressure liquid chromatography (HPLC) analyses of all the compounds of interest in nucleic acid metabolism. It aids chromatographers, biochemists, biomedical researchers, and chemists by giving information on applications of HPLC technique.

This important, new reference provides the first , up-to-date, and comprehensive treatmentof the various liquid chromatography (LC) instrumentation for Therapeutic DrugMonitoring (TDM) and toxicology drug assays and reviews the clinical pharmacologyof major classes of drugs and their LC analyses.Written by authoritative contributors who bring many years of personal laboratory/clinical experience to the book, this interdisciplinary work : presents the principlesof TDM, sampling techniques, and various instrumentation topics, including computerinterfacing, mass spectrometry, fluorescence , electrochemical detection, and bloodcollection devices . .. examines six primary classes of drugs, complete with recommendedLC procedures and emphasizing recently introduced drugs and their LC analyses. .. and documents medicolegal guidelines and laboratory management considerations,providing a contemporary assessment of today's laboratory needs.The only practical, current guide available on the subject, Therapeutic Drug Monitoringand Toxicology by Li([uid Chromatography belongs in the personal libraries of clinicaland analytical chemists and biochemists, clinical pharmacologists, clinical toxicologists,clinical pathologists, immunologists, liquid chromatographers, mass spectroscopists, laboratorydirectors, laboratory instrument manufacturers , and medical technologists. Thebook is also vital supplementary reading for advanced undergraduate and graduate-levelclinical chemistry, toxicology, clinical pathology, and liquid chromatography course.