Note: Intro -- Preface -- Acknowledgements -- Contents -- Contributors -- Chapter-1 -- Saving Solvents in Chromatographic Purifications: The Counter-Current Chromatography Technique -- 1.1 Introduction -- 1.2 CCC Theory -- 1.2.1 High Loadability -- 1.2.2 Scale up Capability -- 1.3 Instrumentation -- 1.3.1 Hydrostatic and Hydrodynamic Instruments -- 1.3.2 Liquid Systems -- 1.4 Counter Current Chromatography, a Green Process -- 1.4.1 Saving Solvents -- 1.4.2 Improving Process Parameters -- 1.4.3 Injecting Crude Samples -- 1.4.4 Greener Solvents -- 1.5 Counter Current Chromatography, a Tool for Green Chemistry Development -- 1.5.1 Natural Products -- 1.5.2 Solute Partition Coefficient Determination -- 1.6 Conclusion -- References -- Chapter-2 -- Ion Size Exclusion Chromatohtaphy on Hypercrosslinked Polystyrene Sorbents as a Green Technology of Separating Mineral Elecyrolites -- 2.1 Introduction -- 2.2 Nanoporous Hypercrosslinked Polystyrene Sorbents -- 2.3 Brief Description of Chromatographic Experiments -- 2.4 Dimensions of Hydrated Ions -- 2.5 Separation of Electrolytes on Nanoporous Hypercrosslinked Sorbents -- 2.6 Basic Features of Size Exclusion Chromatography -- 2.7 Conception of "Ideal Separation Process" -- 2.8 Selectivity of Electrolyte Separation Process -- 2.9 Influence of the Electrolyte Concentration on the Selectivity of Separat -- 2.10 "Acid Retardation", "Base Retardation" and "Salt Retardation" Phenomena -- 2.11 Other Convincing Proofs of Separating Electrolytes via Exclusion Mechanism -- 2.12 Do we Really Need Sorbent Functional Groups to Separate Electrolytes? -- 2.13 Productivity of the Ion Size Exclusion Process -- 2.14 Ion Size Exclusion-Green Technology -- 2.15 Conclusion -- References -- Chapter-3 -- Supercritical Fluid Chromatography: A Green Approach for Separation and Purification of Organic and Inorganic Analytes. , 3.1 Introduction to Green Chemistry and Supercritical Fluid Chromatography -- 3.2 Super Critical Fluids -- 3.2.1 Supercritical Fluid Extraction (SFE) -- 3.3 Supercritical Fluid Chromatography (SFC): An Overview -- 3.3.1 History of Development of Supercritical Fluid Chromatography -- 3.3.2 Instrumentation -- 3.3.2.1 Advantages and Disadvantages of Supercritical Fluid Chromatography -- 3.3.3 Properties of SFC compared to GC and HPLC -- 3.4 Industrial Applications of SCFs and SFCs -- 3.5 Conclusion -- References -- Chapter-4 -- High Performance Thin-Layer Chromatography -- 4.1 Introduction -- 4.2 High Performance Thin-Layer Chromatography -- 4.3 Sample Preparation in HPTLC -- 4.4 Green Separation Modalities in HPTLC -- 4.4.1 "Three R" Philosophy-Replacement of Toxic Solvents with Environmental Friendly Mobi -- 4.4.1.1 Reversed-Phase Chromatography -- 4.4.1.2 Hydrophilic Interaction Chromatography (HILIC) in HPTLC -- 4.4.1.3 Salting-Out Chromatography in HPTLC -- 4.5 Conclusion -- References -- Chapter-5 -- Green Techniques in Gas Chromatography -- 5.1 Introduction -- 5.2 Sample Preparation -- 5.2.1 Direct Methods Without Sample Preparation -- 5.2.2 Solventless Sample Preparation Techniques -- 5.2.2.1 Solid Phase Extraction -- 5.2.2.2 Vapor-Phase Extraction -- 5.2.2.3 Thermal Desorption (TD)/Thermal Extraction (TE) -- 5.2.2.4 Membrane Extraction -- 5.2.3 Sample Preparation Using Environmentally Friendly Solvents -- 5.2.3.1 Supercritical Fluid Extraction (SFE) -- 5.2.3.2 Subcritical Water Extraction (SWE) -- 5.2.3.3 Ionic Liquids (ILs) -- 5.2.3.4 Cloud-Point Extraction -- 5.2.4 Assisted Solvent Extraction -- 5.3 Column Considerations for Green Gas Chromatography -- 5.4 Carrier Gas Considerations for Green Gas Chromatography -- 5.5 Coupling GC with Other Analytical Tools -- 5.6 On-Site Analysis. , 5.7 Conclusion -- References -- Chapter-6 -- Preparation and Purification of Garlic-Derived Organosulfur Compound Allicin by Green Methodologies -- 6.1 Introduction -- 6.2 Green RP-HPLC Purification of the Allicin -- 6.3 Characterization of the Allicin by Green Methodologies -- 6.4 Allicin in Different Garlic Extract by Green RP-HPLC -- 6.5 Allicin Green Chemical Synthesis -- 6.6 Stability of Allicin -- 6.7 Conclusions -- References -- Chapter-7 -- Green Sample Preparation Focusing on Organic Analytes in Complex Matrices -- 7.1 Introduction -- 7.1.1 Trends in Green Analytical Chemistry -- 7.1.2 Green Techniques for Sample Preparation -- 7.1.2.1 Reduction and Solvent Replacement -- Supercritical Fluid Extraction -- Membranes -- 7.1.2.2 Solvent Elimination -- Solid Phase Extraction (SPE) -- Matrix Solid-Phase Dispersion (MSPD) -- Sorptive Extraction Techniques -- Solid Phase Microextraction (SPME) -- Stir-Bar Sorptive Extraction -- 7.2 Conclusions -- References -- Chapter-8 -- Studies Regarding the Optimization of the Solvent Consumption in the Determination of Organochlor -- 8.1 Introduction -- 8.2 Materials and Methods -- 8.2.1 Materials -- 8.2.2 Methods -- 8.3 Results -- 8.4 Discussions -- 8.4.1 TRM1 -- 8.4.2 TRM2 -- 8.5 Conclusions -- References -- Chapter-9 -- Size Exclusion Chromatography a Useful Technique For Speciation Analysis of Polydimethylsiloxanes -- 9.1 Introduction to SEC -- 9.2 SEC Retention Mechanisms -- 9.2.1 Ideal Size Exclusion Mechanism -- 9.2.2 Non-Ideal Size Exclusion Mechanism -- 9.3 The Stationary Phase in SEC -- 9.4 The Mobile Phase in SEC -- 9.5 Analytical Problems -- 9.6 Methods for Column Calibration -- 9.7 Applications of SEC Biomedical and Pharmaceutical -- 9.7.1 SEC as a Useful Technique for Linear Polydimethylsiloxanes Speciation Analysis. , 9.8 Methodology for Linear Polydimethylsiloxanes Speciation Analysis -- 9.8.1 Mobile Phase Selection -- 9.8.2 Stationary Phase Selection -- 9.8.3 Column Conditions -- 9.8.4 Column Calibration -- 9.8.5 Separation of Polydimethylsiloxanes -- 9.9 Conclusions -- References -- Erratum -- Index.