LEADER 00935nam0 22002411i 450 001 RML0232163 005 20231121125658.0 100 $a20121121d1995 ||||0itac50 ba 101 | $aita 102 $ait 181 1$6z01$ai $bxxxe 182 1$6z01$an 200 1 $aAgricoltura, ambiente e sviluppo economico nel terzo mondo$eun'analisi teorica$fMario Zappacosta 210 $aNapoli $cLa Cittą del Sole $dc1995 215 $a200 p$d21 cm 801 3$aIT$bIT-01$c20121121 850 $aIT-FR0098 899 $aBiblioteca Area Giuridico Economica$bFR0098 912 $aRML0232163 950 0$aBiblioteca Area Giuridico Economica$d 53TER 338.1/211 BIS$e 53VM 0000001005 VM barcode:ECO002413. - Inventario:provv.10. - Fondo:Sala consultazioneVM$fA $h19970930$i20121204 977 $a 53 996 $aAgricoltura, ambiente e sviluppo economico nel terzo mondo$93617734 997 $aUNICAS LEADER 05265nam 22006494a 450 001 9910830239503321 005 20201201005407.0 010 $a1-280-36611-7 010 $a9786610366118 010 $a0-470-24730-4 010 $a0-471-45782-5 010 $a0-471-45781-7 035 $a(CKB)111087027120334 035 $a(EBL)231736 035 $a(OCoLC)56536976 035 $a(SSID)ssj0000240837 035 $a(PQKBManifestationID)11220938 035 $a(PQKBTitleCode)TC0000240837 035 $a(PQKBWorkID)10266720 035 $a(PQKB)11436803 035 $a(MiAaPQ)EBC231736 035 $a(PPN)137141947 035 $a(EXLCZ)99111087027120334 100 $a20030122d2003 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 00$aSample preparation techniques in analytical chemistry$b[electronic resource] /$fedited by Somenath Mitra 210 $aHoboken, N.J. $cJ. Wiley$dc2003 215 $a1 online resource (480 p.) 225 1 $aChemical analysis ;$vv. 162 300 $aIncludes index. 311 $a0-471-32845-6 327 $aSample 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 327 $a1.4. 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 327 $aCHAPTER 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 327 $a2.5. 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 327 $a3.2.3. 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 327 $a3.6.2. Instrumentation 330 $aThe importance of accurate sample preparation techniques cannot be overstated--meticulous sample preparation is essential. Often overlooked, it is the midway point where the analytes from the sample matrix are transformed so they are suitable for analysis. Even the best analytical techniques cannot rectify problems generated by sloppy sample pretreatment.Devoted entirely to teaching and reinforcing these necessary pretreatment steps, Sample Preparation Techniques in Analytical Chemistry addresses diverse aspects of this important measurement step. These include:* State-of-the-art e 410 0$aChemical analysis ;$vv. 162. 606 $aSampling 606 $aAnalytical chemistry$xMethodology 615 0$aSampling. 615 0$aAnalytical chemistry$xMethodology. 676 $a543 676 $a543.02 701 $aMitra$b S$g(Somenath),$f1959-$0150581 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910830239503321 996 $aSample preparation techniques in analytical chemistry$94102142 997 $aUNINA