主题词：Synthesis and biological activity; Synthesis and Characterization of Heterocyclic Compounds; Analytical Chemistry and Chromatography; Inorganic and Organometallic Chemistry; Metal complexes synthesis and properties; Water Quality Monitoring and Analysis; Electrochemical Analysis and Applications; Analytical Methods in Pharmaceuticals; Catalytic Processes in Materials Science; Adsorption and biosorption for pollutant removal; Multicomponent Synthesis of Heterocycles; Free Radicals and Antioxidants; Chemical Synthesis and Reactions; Analytical chemistry methods development; Electrochemical sensors and biosensors; Extraction and Separation Processes; Advanced Chemical Sensor Technologies; Thermal and Kinetic Analysis; Advanced Photocatalysis Techniques; Computational Drug Discovery Methods; Dyeing and Modifying Textile Fibers; Metal-Organic Frameworks: Synthesis and Applications; Nonlinear Optical Materials Research; Synthesis and Biological Evaluation; Phytochemicals and Antioxidant Activities