主题词：Spectroscopy and Chemometric Analyses; Spectroscopy Techniques in Biomedical and Chemical Research; Analytical chemistry methods development; Mass Spectrometry Techniques and Applications; Water Quality Monitoring and Analysis; Advanced Chemical Sensor Technologies; Analytical Chemistry and Chromatography; Spectroscopy and Laser Applications; Gold and Silver Nanoparticles Synthesis and Applications; Electrochemical Analysis and Applications; Laser-induced spectroscopy and plasma; Spectroscopy and Quantum Chemical Studies; Mercury impact and mitigation studies; Analytical Chemistry and Sensors; X-ray Spectroscopy and Fluorescence Analysis; Advanced biosensing and bioanalysis techniques; Biosensors and Analytical Detection; Radioactive element chemistry and processing; Cultural Heritage Materials Analysis; Advanced NMR Techniques and Applications; Ion-surface interactions and analysis; Molecular spectroscopy and chirality; Metabolomics and Mass Spectrometry Studies; Heavy metals in environment; NMR spectroscopy and applications