主题词：Spectroscopy and Chemometric Analyses; Spectroscopy Techniques in Biomedical and Chemical Research; Analytical chemistry methods development; Water Quality Monitoring and Analysis; Laser-induced spectroscopy and plasma; Advanced Chemical Sensor Technologies; Metabolomics and Mass Spectrometry Studies; Pesticide Residue Analysis and Safety; Mass Spectrometry Techniques and Applications; Cultural Heritage Materials Analysis; Extraction and Separation Processes; Biosensors and Analytical Detection; Various Chemistry Research Topics; Computational Drug Discovery Methods; Analytical Chemistry and Chromatography; History and advancements in chemistry; Mercury impact and mitigation studies; Fault Detection and Control Systems; Electrochemical Analysis and Applications; Geochemistry and Geologic Mapping; Gold and Silver Nanoparticles Synthesis and Applications; Radioactive element chemistry and processing; Advanced biosensing and bioanalysis techniques; Molecular Sensors and Ion Detection; Spectroscopy and Laser Applications