Saving Solvents in Chromatographic Purifications: The Counter-current Chromatography Technique -- Ion Size Exclusion Chromatography on Hypercrosslinked Polystyrene Sorbents as a Green Technology of Separating Mineral Electrolytes -- Supercritical Fluid Chromatography: A Green Approach for Separation and Purification of Organic and Inorganic Analytes -- High Performance Thin-layer Chromatography -- Green Techniques in Gas Chromatography -- Preparation and Purification of Garlic-Derived Organosulfur Compound Allicin by Green Methodologies -- Green Sample Preparation Focusing on Organic Analytes in Complex Matrices -- Studies Regarding the Optimization of the Solvent Consumption in the Determination of Organochlorine Pesticides from Complex Fodder -- Size Exclusion Chromatography- A Useful Technique for Speciation Analysis of Polydimethylsiloxanes.