Sample preparation techniques in analytical chemistry [[electronic resource] /] / edited by Somenath Mitra

• Record Nr.: UNINA9910830239503321
• Pubbl/distr/stampa: Hoboken, N.J., : J. Wiley, c2003
• ISBN: 1-280-36611-7; 9786610366118; 0-470-24730-4; 0-471-45782-5; 0-471-45781-7
• Descrizione fisica: 1 online resource (480 p.)
• Collana: Chemical analysis ; ; v. 162
• Altri autori (Persone): MitraS <1959-> (Somenath)
• Disciplina: 543; 543.02
• Soggetti: Sampling; Analytical chemistry - Methodology
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Includes index.
• Nota di contenuto: Sample Preparation Techniques in Analytical Chemistry; CONTENTS; CONTRIBUTORS; PREFACE; CHAPTER 1 SAMPLE PREPARATION: AN ANALYTICAL PERSPECTIVE; 1.1. The Measurement Process; 1.1.1. Qualitative and Quantitative Analysis; 1.1.2. Methods of Quantitation; 1.2. Errors in Quantitative Analysis: Accuracy and Precision; 1.2.1. Accuracy; 1.2.2. Precision; 1.2.3. Statistical Aspects of Sample Preparation; 1.3. Method Performance and Method Validation; 1.3.1. Sensitivity; 1.3.2. Detection Limit; 1.3.3. Range of Quantitation; 1.3.4. Other Important Parameters; 1.3.5. Method Validation; 1.4. Preservation of Samples1.4.1. Volatilization; 1.4.2. Choice of Proper Containers; 1.4.3. Absorption of Gases from the Atmosphere; 1.4.4. Chemical Changes; 1.4.5. Preservation of Unstable Solids; 1.5. Postextraction Procedures; 1.5.1. Concentration of Sample Extracts; 1.5.2. Sample Cleanup; 1.6. Quality Assurance and Quality Control during Sample Preparation; 1.6.1. Determination of Accuracy and Precision; 1.6.2. Statistical Control; 1.6.3. Matrix Control; 1.6.4. Contamination Control; References; SECTION A EXTRACTION AND ; ENRICHMENT IN SAMPLE PREPARATION; CHAPTER 2 PRINCIPLES OF EXTRACTION AND THE EXTRACTION OF SEMIVOLATILE ORGANICS FROM LIQUIDS2.1. Principles of Extraction; 2.1.1. Volatilization; 2.1.2. Hydrophobicity; 2.1.3. Acid-Base Equilibria; 2.1.4. Distribution of Hydrophobic Ionogenic Organic Compounds; 2.2. Liquid-Liquid Extraction; 2.2.1. Recovery; 2.2.2. Methodology; 2.2.3. Procedures; 2.2.4. Recent Advances in Techniques; 2.3. Liquid-Solid Extraction; 2.3.1. Sorption; 2.4. Solid-Phase Extraction; 2.4.1. Sorbents in SPE; 2.4.2. Sorbent Selection; 2.4.3. Recovery; 2.4.4. Methodology; 2.4.5. Procedures; 2.4.6. Recent Advances in SPE; 2.5. Solid-Phase Microextraction2.5.1. Sorbents; 2.5.2. Sorbent Selection; 2.5.3. Methodology; 2.5.4. Recent Advances in Techniques; 2.6. Stir Bar Sorptive Extraction; 2.6.1. Sorbent and Analyte Recovery; 2.6.2. Methodology; 2.6.3. Recent Advances in Techniques; 2.7. Method Comparison; References; CHAPTER 3 EXTRACTION OF SEMIVOLATILE ORGANIC COMPOUNDS FROM SOLID MATRICES; 3.1. Introduction; 3.1.1. Extraction Mechanism; 3.1.2. Preextraction Procedures; 3.1.3. Postextraction Procedures; 3.2. Soxhlet and Automated Soxhlet; 3.2.1. Soxhlet Extraction; 3.2.2. Automated Soxhlet Extraction; 3.2.3. Comparison between Soxtec and Soxhlet3.3. Ultrasonic Extraction; 3.3.1. Selected Applications and Comparison with Soxhlet; 3.4. Supercritical Fluid Extraction; 3.4.1. Theoretical Considerations; 3.4.2. Instrumentation; 3.4.3. Operational Procedures; 3.4.4. Advantages/Disadvantages and Applications of SFE; 3.5. Accelerated Solvent Extraction; 3.5.1. Theoretical Considerations; 3.5.2. Instrumentation; 3.5.3. Operational Procedures; 3.5.4. Process Parameters; 3.5.5. Advantages and Applications of ASE; 3.6. Microwave-Assisted Extraction; 3.6.1. Theoretical Considerations; 3.6.2. Instrumentation
• Sommario/riassunto: The importance of accurate sample preparation techniques cannot be overstated--meticulous sample preparation is essential. Often overlooked, it is the midway point where the analytes from the sample matrix are transformed so they are suitable for analysis. Even the best analytical techniques cannot rectify problems generated by sloppy sample pretreatment.Devoted entirely to teaching and reinforcing these necessary pretreatment steps, Sample Preparation Techniques in Analytical Chemistry addresses diverse aspects of this important measurement step. These include:* State-of-the-art e