主题词：Analytical chemistry methods development; Mass Spectrometry Techniques and Applications; Laser-induced spectroscopy and plasma; Electrochemical Analysis and Applications; Mercury impact and mitigation studies; Radioactive element chemistry and processing; Ion-surface interactions and analysis; Isotope Analysis in Ecology; X-ray Spectroscopy and Fluorescence Analysis; Radioactive contamination and transfer; Nuclear Physics and Applications; Heavy metals in environment; Cultural Heritage Materials Analysis; Diverse Scientific and Economic Studies; Analytical Chemistry and Sensors; Geological and Geochemical Analysis; Geochemistry and Geologic Mapping; Human auditory perception and evaluation; Pesticide Residue Analysis and Safety; Heavy Metal Exposure and Toxicity; Electron and X-Ray Spectroscopy Techniques; Arsenic contamination and mitigation; Analytical Chemistry and Chromatography; Selenium in Biological Systems; Trace Elements in Health