05265nam 22006494a 450 991083023950332120201201005407.01-280-36611-797866103661180-470-24730-40-471-45782-50-471-45781-7(CKB)111087027120334(EBL)231736(OCoLC)56536976(SSID)ssj0000240837(PQKBManifestationID)11220938(PQKBTitleCode)TC0000240837(PQKBWorkID)10266720(PQKB)11436803(MiAaPQ)EBC231736(PPN)137141947(EXLCZ)9911108702712033420030122d2003 uy 0engur|n|---|||||txtccrSample preparation techniques in analytical chemistry[electronic resource] /edited by Somenath MitraHoboken, N.J. J. Wileyc20031 online resource (480 p.)Chemical analysis ;v. 162Includes index.0-471-32845-6 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 Validation1.4. 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 PREPARATIONCHAPTER 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 SPE2.5. 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 Extraction3.2.3. 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 Considerations3.6.2. InstrumentationThe 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 eChemical analysis ;v. 162.SamplingAnalytical chemistryMethodologySampling.Analytical chemistryMethodology.543543.02Mitra S(Somenath),1959-150581MiAaPQMiAaPQMiAaPQBOOK9910830239503321Sample preparation techniques in analytical chemistry4102142UNINA