High-performance gradient elution [[electronic resource] ] : the practical application of the linear-solvent-strength model / / Lloyd R. Snyder, John W. Dolan |
Autore | Snyder Lloyd R |
Pubbl/distr/stampa | Hoboken, NJ, : John Wiley, c2007 |
Descrizione fisica | 1 online resource (491 p.) |
Disciplina |
543.0894
543.84 543/.84 |
Altri autori (Persone) | DolanJohn W |
Soggetto topico | High performance liquid chromatography |
ISBN |
1-280-72143-X
9786610721436 0-470-05552-9 0-470-05551-0 |
Formato | Materiale a stampa |
Livello bibliografico | Monografia |
Lingua di pubblicazione | eng |
Nota di contenuto |
HIGH-PERFORMANCE GRADIENT ELUTION; CONTENTS; PREFACE; GLOSSARY OF SYMBOLS AND TERMS; 1 INTRODUCTION; 1.1 The "General Elution Problem" and the Need for Gradient Elution; 1.2 Other Reasons for the Use of Gradient Elution; 1.3 Gradient Shape; 1.4 Similarity of Isocratic and Gradient Elution; 1.4.1 Gradient and Isocratic Elution Compared; 1.4.2 The Linear-Solvent-Strength Model; 1.5 Computer Simulation; 1.6 Sample Classification; 1.6.1 Sample Compounds of Related Structure ("Regular Samples"); 1.6.2 Sample Compounds of Unrelated Structure ("Irregular" Samples); 2 GRADIENT ELUTION FUNDAMENTALS
2.1 Isocratic Separation2.1.1 Retention; 2.1.2 Peak Width and Plate Number; 2.1.3 Resolution; 2.1.4 Role of Separation Conditions; 2.1.4.1 Optimizing Retention [Term a of Equation (2.7)]; 2.1.4.2 Optimizing Selectivity α [Term b of Equation (2.7)]; 2.1.4.3 Optimizing the Column Plate Number N [Term c of Equation (2.7)]; 2.2 Gradient Separation; 2.2.1 Retention; 2.2.1.1 Gradient and Isocratic Separation Compared for "Corresponding" Conditions; 2.2.2 Peak Width; 2.2.3 Resolution; 2.2.3.1 Resolution as a Function of Values of S for Two Adjacent Peaks ("Irregular" Samples) 2.2.3.2 Using Gradient Elution to Predict Isocratic Separation2.2.4 Sample Complexity and Peak Capacity; 2.3 Effect of Gradient Conditions on Separation; 2.3.1 Gradient Steepness b: Change in Gradient Time; 2.3.2 Gradient Steepness b: Change in Column Length or Diameter; 2.3.3 Gradient Steepness b: Change in Flow Rate; 2.3.4 Gradient Range Δø: Change in Initial Percentage B (ø(0)); 2.3.5 Gradient Range Δø: Change in Final %B (ø(f)); 2.3.6 Effect of a Gradient Delay; 2.3.6.1 Equipment Dwell Volume; 2.3.7 Effect of Gradient Shape (Nonlinear Gradients) 2.3.8 Overview of the Effect of Gradient Conditions on the Chromatogram2.4 Related Topics; 2.4.1 Nonideal Retention in Gradient Elution; 2.4.2 Gradient Elution Misconceptions; 3 METHOD DEVELOPMENT; 3.1 A Systematic Approach to Method Development; 3.1.1 Separation Goals (Step 1 of Fig. 3.1); 3.1.2 Nature of the Sample (Step 2 of Fig. 3.1); 3.1.3 Initial Experimental Conditions; 3.1.4 Repeatable Results; 3.1.5 Computer Simulation: Yes or No?; 3.1.6 Sample Preparation (Pretreatment); 3.2 Initial Experiments; 3.2.1 Interpreting the Initial Chromatogram (Step 3 of Fig. 3.1) 3.2.1.1 "Trimming" a Gradient Chromatogram3.2.1.2 Possible Problems; 3.3 Developing a Gradient Separation: Resolution versus Conditions; 3.3.1 Optimizing Gradient Retention k* (Step 4 of Fig. 3.1); 3.3.2 Optimizing Gradient Selectivity α* (Step 5 of Fig. 3.1); 3.3.3 Optimizing the Gradient Range (Step 6 of Fig. 3.1); 3.3.3.1 Changes in Selectivity as a Result of Change in k*; 3.3.4 Segmented (Nonlinear) Gradients (Step 6 of Fig. 3.1 Continued); 3.3.5 Optimizing the Column Plate Number N* (Step 7 of Fig. 3.1); 3.3.6 Column Equilibration Between Successive Sample Injections 3.3.7 Fast Separations |
Record Nr. | UNINA-9910143567103321 |
Snyder Lloyd R | ||
Hoboken, NJ, : John Wiley, c2007 | ||
Materiale a stampa | ||
Lo trovi qui: Univ. Federico II | ||
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High-performance gradient elution [Risorsa elettronica] : the practical application of the linear-solvent-strength model / Lloyd R. Snyder, John W. Dolan |
Autore | Snyder, Lloyd R. |
Pubbl/distr/stampa | Hoboken, NJ : John Wiley, 2006 |
Disciplina | 543.84 |
Altri autori (Persone) | Dolan, John W. |
ISBN | 9780470055526 |
Formato | Risorse elettroniche |
Livello bibliografico | Monografia |
Lingua di pubblicazione | eng |
Record Nr. | UNINA-990009424460403321 |
Snyder, Lloyd R. | ||
Hoboken, NJ : John Wiley, 2006 | ||
Risorse elettroniche | ||
Lo trovi qui: Univ. Federico II | ||
|