主题词：Chemical and Physical Properties in Aqueous Solutions; Thermodynamic properties of mixtures; Chemical Thermodynamics and Molecular Structure; Phase Equilibria and Thermodynamics; Ionic liquids properties and applications; Spectroscopy and Quantum Chemical Studies; Analytical Chemistry and Chromatography; Electrochemical Analysis and Applications; Crystallization and Solubility Studies; Surfactants and Colloidal Systems; Radioactive element chemistry and processing; Photochemistry and Electron Transfer Studies; Free Radicals and Antioxidants; Analytical Chemistry and Sensors; Thermal and Kinetic Analysis; Molecular Sensors and Ion Detection; Inorganic and Organometallic Chemistry; Protein Interaction Studies and Fluorescence Analysis; Chemical Reaction Mechanisms; Extraction and Separation Processes; Metal complexes synthesis and properties; Chemical Synthesis and Characterization; Diffusion Coefficients in Liquids; Solid-state spectroscopy and crystallography; Lanthanide and Transition Metal Complexes