Autore	Hahn-Deinstrop Elke
Edizione	[2nd ed.]
Pubbl/distr/stampa	Weinheim, [Germany] : , : Wiley-VCH Verlag GmbH & Co. KGaA, , 2007
Descrizione fisica	1 online resource (332 p.)
Disciplina	543.84
Soggetto topico	Thin layer chromatography
Soggetto genere / forma	Electronic books.
ISBN	1-280-85450-2 9786610854509 3-527-61025-1 3-527-60985-7
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Applied Thin-Layer Chromatography; Preface to the Second English Edition; Preface to the First English Edition; Preface to the First German Edition; Contents; List of Tables; 1 Introduction; 1.1 What Does TLC Mean?; 1.2 When Is TLC Used?; 1.3 Where Is TLC Used?; 1.4 How is the Result of a TLC Represented?; 1.4.1 Retardation Factor; 1.4.2 Flow Constant; 1.4.3 Other TLC Parameters; 1.5 What Kinds of Reference Substances Are Used in TLC?; 1.6 The Literature on TLC; 1.6.1 General Literature; 1.6.1.1 Books and Information Sheets in German; 1.6.1.2 Books in English; 1.6.1.3 Book in Another Language 1.6.2 Journals1.6.2.1 German Language Journals Containing Articles on TLC (Selection); 1.6.2.2 English Language Journals on TLC; 1.6.2.3 English Language Journals Containing General Articles on Chromatography (Selection); 1.6.3 Abstracts; 1.6.4 Pharmacopoeias; 2 Precoated Layers; 2.1 Precoated Layers - Why?; 2.2 What Are Precoated Layers Composed Of?; 2.2.1 Sorbents; 2.2.2 Supports for Stationary Phases; 2.2.3 Additives; 2.3 What Types of Precoated Layers Are There?; 2.4 What Are the Uses of Precoated Layers?; 2.5 Criteria for the Selection of Stationary Phases in TLC 2.5.1 How Can the Choice of the Stationary Phase Be Made?2.5.2 How Can the Recommendations for Stationary Phases Found in Pharmacopoeias Be Applied to Precoated Layers?; 2.6 Effect of the Stationary Phase When Mobile Phases Are Identical; 2.7 Advice on the Ordering and Storage of Precoated Layers; 2.8 Problems in the Naming and Arrangement of Precoated Layers; 3 Before the TLC Development Process; 3.1 Handling of Precoated Layers; 3.1.1 Film and Foil; 3.1.2 Glass Plates; 3.2 Prewashing; 3.3 Activation; 3.4 Conditioning; 3.5 Impregnation; 3.5.1 Impregnation by Dipping 3.5.2 Impregnation by Spraying3.5.3 Impregnation by Predevelopment; 3.6 Application of Samples; 3.6.1 Manual Application of Samples; 3.6.2 Semiautomatic Application; 3.6.3 Fully Automatic Application; 3.7 Positioning of the Samples; 3.8 Drying Before the Development; 4 Solvent Systems, Developing Chambers and Development; 4.1 Solvent Systems; 4.1.1 Choice of Solvent Systems; 4.1.2 Preparation and Storage of Solvent Systems; 4.1.3 Problematical Solvent System Compositions; 4.2 TLC Developing Chambers; 4.2.1 What Types of TLC Developing Chambers Are There? 4.2.1.1 TLC Chambers for Vertical Development4.2.1.2 TLC Developing Chambers for Horizontal Development; 4.2.2 Influence of the Chamber Atmosphere; 4.2.2.1 The Unsaturated N-Chamber; 4.2.2.2 The Saturated N-Chamber; 4.2.3 Influence of Temperature in Chromatography; 4.2.4 Location and Labeling of TLC Developing Chambers; 4.3 Development of Thin-Layer Chromatograms; 4.3.1 One-Dimensional Thin-Layer Chromatography; 4.3.1.1 Vertical Development; 4.3.1.2 Horizontal Development; 4.3.2 Two-Dimensional Thin-Layer Chromatography; 4.4 Drying After Development; 5 Evaluation Without Derivatization 5.1 Direct Visual Evaluation
Record Nr.	UNINA-9910144143803321

Edizione	[First edition.]
Pubbl/distr/stampa	Hoboken, New Jersey : , : Whiley, , 2017
Descrizione fisica	1 online resource (539 pages) : illustrations
Disciplina	543.84
Soggetto topico	Liquid chromatography Atmospheric aerosols Aerosols Electrostatic precipitation Separation (Technology)
Soggetto genere / forma	Electronic books.
ISBN	1-5231-1460-6 1-119-39072-9 1-119-39069-9 1-119-39070-2
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Record Nr.	UNINA-9910270940603321

Edizione	[3rd ed.]
Pubbl/distr/stampa	Weinheim, : Wiley-VCH, c2007
Descrizione fisica	1 online resource (643 p.)
Disciplina	543.84
Altri autori (Persone)	SubramanianG. <1935->
Soggetto topico	Liquid chromatography Chirality
Soggetto genere / forma	Electronic books.
ISBN	1-281-23922-4 3-527-61172-X 3-527-61173-8
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Chiral Separation Techniques; Contents; Preface; List of Contributors; 1 Method Development and Optimization of Enantioseparations Using Macrocyclic Glycopeptide Chiral Stationary Phases; 1.1 Introduction; 1.2 Structural Characteristics of Macrocyclic Glycopeptide CSPs; 1.2.1 Chiral Recognition Mechanisms; 1.2.2 Multi-modal Chiral Stationary Phases; 1.3 Enantioselectivity as a Function of Molecular Recognition; 1.3.1 Ionizable Molecules; 1.3.1.1 Polar Ionic Mode; 1.3.1.2 Reversed-phase Mode; 1.3.2 Neutral Molecules; 1.4 Complementary Effects; 1.5 Method Development 1.6 Optimization Procedures1.6.1 Polar Ionic Mode; 1.6.2 Reversed-phase Mode; 1.6.2.1 pH Effects; 1.6.2.2 Organic Modifier Effects; 1.6.3 Polar Organic/Normal-phase Mode; 1.6.4 Flow-rate and Temperature Effects; 1.7 Amino Acid and Peptide Analysis; 1.8 Conclusion; Acknowledgments; References; 2 Role of Polysaccharides in Chiral Separations by Liquid Chromatography and Capillary Electrophoresis; 2.1 Introduction; 2.2 Structures of Polysaccharide Chiral Selectors; 2.2.1 Synthesis of Polysaccharide Chiral Selectors; 2.2.2 Preparation of Polysaccharide Chiral Stationary Phases 2.2.2.1 Preparation of CSPs by Coating2.2.2.2 Preparation of CSPs by Immobilization; 2.2.2.3 Coated versus Immobilized CSPs; 2.3 Properties of Polysaccharide CSPs; 2.3.1 Enantioselectivities; 2.3.2 Spectroscopic Studies; 2.4 Applications; 2.4.1 Analytical Separations; 2.4.2 Preparative Separations; 2.5 Optimization of Chiral Separations; 2.5.1 Mobile Phase Compositions; 2.5.2 pH of the Mobile Phase; 2.5.3 Flow-rate; 2.5.4 Temperature; 2.5.5 Structures of Solutes; 2.5.6 Other Parameters; 2.6 Chiral Recognition Mechanisms; 2.7 Chiral Separation by Sub- and Supercritical Fluid Chromatography 2.8 Chiral Separation by Capillary Electrochromatography2.9 Chiral Separation by Thin-layer Chromatography; 2.10 Chiral Separation by Capillary Electrophoresis; 2.11 Conclusion; References; 3 Analytical and Preparative Potential of Immobilized Polysaccharide-derived Chiral Stationary Phases; 3.1 Introduction; 3.1.1 Scientific Developments in Polysaccharide Immobilization with Chiral Recognition Purposes; 3.1.2 State of the Art on Immobilized Polysaccharide-derived CSPs; 3.2 Scope of Immobilized Polysaccharide-derived CSPs 3.3 Beneficial Characteristics of Immobilized Polysaccharide-derived CSPs3.3.1 New Selectivity Profile on Immobilized CSPs; 3.3.2 Universal Miscibility of Non-standard Solvents and their Contribution to the Performance of Analytical Methods; 3.3.3 Various Sample Injection Media; 3.3.4 Inhibition or Minimization of Racemization by Mobile Phase Switch; 3.3.5 Preparative Potential of Immobilized CSPs; 3.3.6 CSP Stability; 3.4 Method Development on Immobilized Polysaccharide-derived CSPs; 3.4.1 Selection of the Mobile Phase; 3.4.1.1 Analytical Method Development 3.4.1.2 Preparative Method Development
Record Nr.	UNINA-9910140977903321

Edizione	[3rd, completely rev. and updated ed.]
Pubbl/distr/stampa	Weinheim, : Wiley-VCH, c2007
Descrizione fisica	1 online resource (643 p.)
Disciplina	543.84
Altri autori (Persone)	SubramanianG. <1935->
Soggetto topico	Liquid chromatography Chirality
ISBN	1-281-23922-4 3-527-61172-X 3-527-61173-8
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Chiral Separation Techniques; Contents; Preface; List of Contributors; 1 Method Development and Optimization of Enantioseparations Using Macrocyclic Glycopeptide Chiral Stationary Phases; 1.1 Introduction; 1.2 Structural Characteristics of Macrocyclic Glycopeptide CSPs; 1.2.1 Chiral Recognition Mechanisms; 1.2.2 Multi-modal Chiral Stationary Phases; 1.3 Enantioselectivity as a Function of Molecular Recognition; 1.3.1 Ionizable Molecules; 1.3.1.1 Polar Ionic Mode; 1.3.1.2 Reversed-phase Mode; 1.3.2 Neutral Molecules; 1.4 Complementary Effects; 1.5 Method Development 1.6 Optimization Procedures1.6.1 Polar Ionic Mode; 1.6.2 Reversed-phase Mode; 1.6.2.1 pH Effects; 1.6.2.2 Organic Modifier Effects; 1.6.3 Polar Organic/Normal-phase Mode; 1.6.4 Flow-rate and Temperature Effects; 1.7 Amino Acid and Peptide Analysis; 1.8 Conclusion; Acknowledgments; References; 2 Role of Polysaccharides in Chiral Separations by Liquid Chromatography and Capillary Electrophoresis; 2.1 Introduction; 2.2 Structures of Polysaccharide Chiral Selectors; 2.2.1 Synthesis of Polysaccharide Chiral Selectors; 2.2.2 Preparation of Polysaccharide Chiral Stationary Phases 2.2.2.1 Preparation of CSPs by Coating2.2.2.2 Preparation of CSPs by Immobilization; 2.2.2.3 Coated versus Immobilized CSPs; 2.3 Properties of Polysaccharide CSPs; 2.3.1 Enantioselectivities; 2.3.2 Spectroscopic Studies; 2.4 Applications; 2.4.1 Analytical Separations; 2.4.2 Preparative Separations; 2.5 Optimization of Chiral Separations; 2.5.1 Mobile Phase Compositions; 2.5.2 pH of the Mobile Phase; 2.5.3 Flow-rate; 2.5.4 Temperature; 2.5.5 Structures of Solutes; 2.5.6 Other Parameters; 2.6 Chiral Recognition Mechanisms; 2.7 Chiral Separation by Sub- and Supercritical Fluid Chromatography 2.8 Chiral Separation by Capillary Electrochromatography2.9 Chiral Separation by Thin-layer Chromatography; 2.10 Chiral Separation by Capillary Electrophoresis; 2.11 Conclusion; References; 3 Analytical and Preparative Potential of Immobilized Polysaccharide-derived Chiral Stationary Phases; 3.1 Introduction; 3.1.1 Scientific Developments in Polysaccharide Immobilization with Chiral Recognition Purposes; 3.1.2 State of the Art on Immobilized Polysaccharide-derived CSPs; 3.2 Scope of Immobilized Polysaccharide-derived CSPs 3.3 Beneficial Characteristics of Immobilized Polysaccharide-derived CSPs3.3.1 New Selectivity Profile on Immobilized CSPs; 3.3.2 Universal Miscibility of Non-standard Solvents and their Contribution to the Performance of Analytical Methods; 3.3.3 Various Sample Injection Media; 3.3.4 Inhibition or Minimization of Racemization by Mobile Phase Switch; 3.3.5 Preparative Potential of Immobilized CSPs; 3.3.6 CSP Stability; 3.4 Method Development on Immobilized Polysaccharide-derived CSPs; 3.4.1 Selection of the Mobile Phase; 3.4.1.1 Analytical Method Development 3.4.1.2 Preparative Method Development
Record Nr.	UNINA-9910877287203321

Pubbl/distr/stampa	Weinheim, : Wiley-VCH Verlag GmbH & Co. KGaA, 2008
Descrizione fisica	1 online resource (422 p.)
Disciplina	543.0894 543.8 543.84 544.92
Altri autori (Persone)	KromidasStavros KussHans-Joachim
Soggetto topico	Chromatographic analysis High performance liquid chromatography Gas chromatography
Soggetto genere / forma	Electronic books.
ISBN	3-527-66015-1 1-281-94677-X 9786611946777 3-527-62222-5 3-527-62223-3
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	ger
Nota di contenuto	Chromatogramme richtig integrieren und bewerten; Inhaltsverzeichnis; Vorwort; Autorenliste; Zum Aufbau des Buches; Teil I Auswertung in der Chromatographie - die Integration; 1 Das Chromatogramm; 1.1 Chromatographischer Prozess; 1.1.1 Selektivität und Effizienz - Maß für die unterschiedliche Wanderungsgeschwindigkeit; 1.2 Chromatographische Kenngrößen; 1.2.1 Retentionsgrößen; 1.2.1.1 Totzeit (t(m); t(0)); 1.2.1.2 Bruttoretentionszeit (t(ms); t(R)); 1.2.1.3 Nettoretentionszeit (t(s)); 1.2.1.4 Retentionsfaktor oder Kapazitätsfaktor (k; k ́); 1.2.2 Peak-Ausdehnung und Peakform 1.2.2.1 Basispeakbreite (w(b))1.2.2.2 Peakbreite in halber Höhe (w(h)); 1.2.2.3 Peakhöhe (h); 1.2.2.4 Peaksymmetrie, Tailingfaktor (T); 1.2.3 Auflösungsgrößen; 1.2.3.1 Die Auflösung (R); 1.2.3.2 Quantitative Größe der Selektivität; 1.2.3.3 Quantitative Größen für die Effizienz der Trennsäule; 1.2.4 Bestimmung von kleinen Substanzmengen; 1.2.4.1 Ermitteln der Nachweis-, Erfassungs-, Entscheidungs- und Bestimmungsgrenze; 1.3 van Deemter- und Golay-Gleichung; 1.4 Erzeugen von Chromatogrammen; 1.4.1 Datenaufnahme, Erzeugen der Rohdaten; 1.4.1.1 Bei der Datenaufnahme verwendete Parameter 1.4.1.2 Beispiele der unterschiedlichen Art der Datenaufnahme1.4.1.3 Innere/äußere Chromatogramme; 1.4.1.4 2-D-/3-D-Chromatogramme; 1.4.2 Charakterisierung von Detektoren; 1.4.2.1 Zerstörend/nicht zerstörend; 1.4.2.2 Selektiv, spezifisch, universell; 1.4.2.3 Konzentrations- und massenstromabhängige Detektoren; 1.4.2.4 Detektorempfindlichkeit; 1.4.2.5 Linearer und dynamischer Bereich; 1.4.2.6 Ansprechzeit, Zeitkonstante; 1.5 Integration; 1.5.1 Integration anschaulich; 1.5.1.1 Methoden zur Peakerkennung; 1.5.2 Integration und Integrationsparameter, Beispiele 1.5.2.1 Datenaufnahme und -integration mit Empower 21.5.2.2 Datenaufnahme und -integration mit Chromeleon; 1.5.2.3 Datenaufnahme und -integration mit EZChrom Elite; 1.5.2.4 Datenaufnahme und -integration mit ChemStation; 1.5.2.5 Vergleich der wichtigsten Integrationsparameter von vier unterschiedlichen Integrationsprogrammen; Anhang: Experimente zur Optimierung der Zeitkonstante/Datensammelrate; Literatur; 2 Integrationsfehler und Auswertung; 2.1 Was sagt die Literatur über Integrationsfehler?; 2.2 Integration in der täglichen Praxis; 2.2.1 Integration - einfach und immer gleich? 2.2.2 Vergleich von Integrationssystemen mit wenigen großen Peaks2.2.3 Vergleich von Integrationssystemen mit vielen kleinen Peaks; 2.3 Chromatogramm-Simulation; 2.3.1 Simulation eines digitalen Chromatogramms; 2.3.2 Ein Peak; 2.3.3 Mehrere Peaks; 2.3.4 Rauschen; 2.3.5 Drift; 2.3.6 Gaschromatogramm; 2.3.7 Verschmolzene Peaks; 2.3.8 Datenpunktabstand; 2.3.9 Tailing; 2.3.10 Peakfläche und Peakhöhe; 2.3.11 Andere Kenngrößen; 2.4 Anwendungen der Simulation; 2.4.1 Simulation einer Kalibriergeraden; 2.4.2 Zehnfache Simulation an der Bestimmungsgrenze 2.4.3 Simulation eines isokratischen Chromatogramms
Record Nr.	UNINA-9910144117803321