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Books in Analytical separations

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81-90 of 120 results in All results

Retention and Selectivity in Liquid Chromatography

  • 1st Edition
  • Volume 57
  • January 13, 1995
  • R.M. Smith
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 6 5 - 4
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.

Principles and Practice of Modern Chromatographic Methods

  • 1st Edition
  • November 29, 1994
  • Kevin Robards + 2 more
  • English
  • Hardback
    9 7 8 - 0 - 1 2 - 5 8 9 5 7 0 - 5
  • eBook
    9 7 8 - 0 - 0 8 - 0 5 7 1 7 8 - 2
Though many separation processes are available for use in todays analytical laboratory, chromatographic methods are the most widely used. The applications of chromatography have grown explosively in the last four decades, owing to the development of new techniques and to the expanding need of scientists for better methods of separating complex mixtures. With its comprehensive, unified approach, this book will greatly assist the novice in need of a reference to chromatographic techniques, as well as the specialist suddenly faced with the need to switch from one technique to another.

Carbohydrate Analysis

  • 1st Edition
  • Volume 58
  • November 11, 1994
  • Z. El Rassi
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 6 6 - 1
Carbohydrates and glycoconjugates play an important role in several life processes. The wide variety of carbohydrate species and their inherent polydispersity and heterogeneity require separation techniques of high resolving power and high selectivity such as high performance liquid chromatography (HPLC) and capillary electrophoresis (HPCE). In the last decade HPLC, and recently HPCE methods have been developed for the high resolution and reproducible quantitation of carbohydrates. Despite the importance of these two column separation technologies in the area of carbohydrates, no previous book describes specialized methods for the separation, purification and detection of carbohydrates and glycoconjugates by HPLC and HPCE.Therefore, the objective of the present book is to provide a comprehensive review of carbohydrate analysis by HPLC and HPCE by covering analytical and preparative separation techniques for all classes of carbohydrates including mono- and disaccharides; linear and cyclic oligosaccharides; branched heterooligosaccharides (e.g., glycans, plant-derived oligosaccharides); glycoconjugates (e.g., glycolipids, glycoproteins); carbohydrates in food and beverage; compositional carbohydrates of polysaccharides; carbohydrates in biomass degradation; etc.The book will be of interest to a wide audience, including analytical chemists and biochemists, carbohydrate, glycoprotein and glycolipid chemists, molecular biologists, biotechnologists, etc. It will also be a useful reference work for both the experienced analyst and the newcomer as well as for users of HPLC and HPCE, graduates and postdoctoral students.

Trace Element Analysis in Biological Specimens

  • 1st Edition
  • Volume 15
  • May 19, 1994
  • R.F.M. Herber + 1 more
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 7 5 6 3 - 7
The major theme of this book is analytical approaches to trace metal and speciation analysis in biological specimens. The emphasis is on the reliable determination of a number of toxicologically and environmentally important metals. It is essentially a handbook based on the practical experience of each individual author. The scope ranges from sampling and sample preparation to the application of various modern and well-documented methods, including quality assessment and control and statistical treatment of data. Practical advice on avoiding sample contamination is included.In the first part, the reader is offered an introduction into the basic principles and methods, starting with sampling, sample storage and sample treatment, with the emphasis on sample decomposition. This is followed by a description of the potential of atomic absorption spectrometry, atomic emission spectrometry, voltammetry, neutron activation analysis, isotope dilution analysis, and the possibilities for metal speciation in biological specimens. Quality control and all approaches to achieve reliable data are treated in chapters about interlaboratory and intralaboratory surveys and reference methods, reference materials and statistics and data evaluation.The chapters of the second part provide detailed information on the analysis of thirteen trace metals in the most important biological specimens. The following metals are treated in great detail: Aluminium, arsenic, cadmium, chromium, copper, lead, selenium, manganese, nickel, mercury, thallium, vanadium and zinc.The book will serve as a valuable aid for practical analysis in biomedical laboratories and for researchers involved with trace metal and species analysis in clinical, biochemical and environmental research.

Supercritical Fluid Extraction

  • 2nd Edition
  • December 27, 1993
  • Mark McHugh + 1 more
  • Howard Brenner
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 5 1 8 1 7 - 6
Supercritical Fluid Extraction is a technique in which CO2 is used under extremely high pressure to separate solution (e.g., removing caffeine from coffee). Separations is basic to all process industries and supercritical fluid extraction is a specific type which is receiving a high level of attention. The book will combine basic fundamentals with industrial applications. The second edition has been expanded and updated and includes new chapters on chromatography and food processing."...this is an excellent book which is both instructive and amusing to read. Its true value is neatly summarised in one of the closing sentences: 'We have supplied you with the guidelines and criteria which you can now apply when considering supercritical fluids for your own needs.'' - Chemistry in Britain, February 1995

Bioaffinity Chromatography

  • 2nd Edition
  • Volume 55
  • September 14, 1993
  • J. Turková
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 6 3 - 0
Bioaffinity chromatography is now the preferred choice for the purification, determination or removal of many biologically active substances. The book includes information on biologically active substances with their affinants, solid supports and methods of coupling, summarized in tables covering classical, high-performance liquid and large-scale bioaffinity chromatography.Optimization of the preparation and the use of highly active and stable biospecific adsorbents is discussed in several chapters. Following a chapter dealing with the choice of affinity ligands, affinity-sorbent bonding is described in detail. Other chapters give information on solid supports, the most common coupling procedures and a general discussion of sorption and elution. Several applications of bioaffinity chromatography are described, e.g. quantitative evaluation of biospecific complexes and many applications in medicine and in the biotechnology industry.

Chromatography of Mycotoxins

  • 1st Edition
  • Volume 54
  • May 28, 1993
  • V. Betina
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 6 2 - 3
This work comprises two parts, Part A: Techniques and Part B: Applications. In Part A the most important principles of sample preparation, extraction, clean-up, and of established and prospective chromatographic techniques are discussed in relation to mycotoxins. In Part B the most important data, scattered in the literature, on thin-layer, liquid, and gas chromatography of mycotoxins have been compiled. Mycotoxins are mostly arranged according to families, such as aflatoxins, trichothecenes, lactones etc. Chromatography of individual important mycotoxins and multi-mycotoxin chromatographic analyses are also included. Applications are presented in three chapters devoted to thin-layer, liquid, and gas chromatography of mycotoxins.

Capillary Electrophoresis

  • 1st Edition
  • Volume 52
  • July 31, 1992
  • S.F.Y. Li
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 6 0 - 9
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.

Hyphenated Techniques in Supercritical Fluid Chromatography and Extraction

  • 1st Edition
  • Volume 53
  • July 21, 1992
  • K. Jinno
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 6 1 - 6
This is the first book to focus on the latest developments in hyphenated techniques using supercritical fluids. The advantages of SFC in hyphenation with various detection modes, such as FTIR, MS, MPD and ICP and others are clearly featured throughout the book. Special attention is paid to coupling of SFE with GC or SFC.In this edited volume, chapters are written by leading experts in the field. The book will be of interest to professionals in academia, as well as to those researchers working in an industrial environment, such as analytical instrumentation, pharmaceuticals, agriculture, food, petrochemicals and environmental.

Fundamentals and Techniques

  • 5th Edition
  • Volume 51A
  • November 26, 1991
  • Erich Heftmann
  • English
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 5 8 5 8 - 6