Complexation Chromatography

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

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

Gas chromatography continues to be one of the most widely used analytical techniques, since its applications today expand into fields such as biomarker research or metabolomics. This new practical textbook enables the reader to make full use of gas chromatography. Essential fundamentals and their implications for the practical work at the instrument are provided, as well as details on the instrumentation such as inlet systems, columns and detectors. Specialized techniques from all aspects of GC are introduced ranging from sample preparation, solvent-free injection techniques, and pyrolysis GC, to separation including fast GC and comprehensive GCxGC and finally detection, such as GC-MS and element-specific detection. Various fields of application such as enantiomer, food, flavor and fragrance analysis, physicochemical measurements, forensic toxicology, and clinical analysis are discussed as well as cutting-edge application in metabolomics is covered.

This book presents a systematic and comprehensive review of the information on chromatographic processes that involve the formation of coordination compounds, aiming not only to demonstrate the achievements that have been made in the theory of praxis of chromatography, but also to point out, as far as possible, the future of potential of ligand exchange chromatography.

The addition of reagents to an RPLC mobile phase enables the separation of ionizable compounds, inorganic anions, and metal ions using conventional instrumentation, silica-based materials, and hydro-organic mixtures, thanks to a variety of secondary equilibria. This gives rise to several chromatographic modes, whose main features are outlined in this chapter. The effect of the mobile phase pH on the retention of ionizable compounds is described, together with the recommended experimental practice. The mechanism of adsorption of amphiphilic anions or cations on the stationary phase to attract analytes with opposite charge or suppress the silanol activity is discussed. Different reagents, such as alkylammonium salts, surfactants (below and above the critical micelle concentration), perfluorinated carboxylate anions, chaotropic ions, and ionic liquids, are considered. The potential of metal chelation for the determination of metal ions and organic compounds is also summarized.

Presenting the latest developments in the field for more than four decades, the Advances in Chromatography series is relied on by scientists and researchers for the most up-to-date information on a wide range of chromatographic methods and applications. Volume 52 continues this tradition with contributions by established, well-known chemists, offering cutting-edge reviews of chromatographic methods with applications in the life sciences. Featured topics include The history, development, and theory behind aerosol-based detectors Protein and peptide biomarkers that are chromatographic endpoints measured in biological fluids and tissues, such as serum, urine, and tissue biopsies Multisegment linear gradient optimization strategy in reversed-phase and hydrophilic interaction chromatographic systems Enantioselective gas chromatography performed using three distinct chiral stationary phases based on hydrogen bonding, metal ion complexation, and inclusion Analysis of the dynamic phenomena of liquid chromatographic systems with six typical reactions in the mobile phase Providing a clear presentation of topics and vivid illustrations for which this series has become known, the latest volume makes the material accessible and engaging to analytical, biochemical, organic, polymer, and pharmaceutical chemists at all levels of technical skill.

Provides current knowledge about separation and interactions of asymmetric molecules, as well as experimental and commercial ma-terials such as columns, instruments, and derivatization reagents. Extensive applications are tabulated by both chromato-graphic technique and compound class, and discussions of recent special topics are useful in planning new work. This unique volume organizes most of the significant, currently available knowledge re-garding the chromatographic separations of stereoisomers. Both diastereomers and the more difficult, controversial area of enan-tiomers are covered in depth with respect to GC, HPLC, and classi-cal chromatographic techniques. Analytical, organic, pharmaceuti-cal, and other chemists as well as pharmacologists and bio-chemists are among those whose work appears in the more than 800 references cite.