主题词：Analytical chemistry methods development; Analytical Chemistry and Chromatography; Pesticide Residue Analysis and Safety; Metabolomics and Mass Spectrometry Studies; Spectroscopy and Chemometric Analyses; Various Chemistry Research Topics; Advanced Chemical Sensor Technologies; Electrochemical sensors and biosensors; Analytical Methods in Pharmaceuticals; Mass Spectrometry Techniques and Applications; Chemistry and Chemical Engineering; Electrochemical Analysis and Applications; Water Quality Monitoring and Analysis; Analytical Chemistry and Sensors; Heavy metals in environment; Biosensors and Analytical Detection; Heavy Metals in Plants; Forensic Toxicology and Drug Analysis; Isotope Analysis in Ecology; Forensic Fingerprint Detection Methods; Spectroscopy Techniques in Biomedical and Chemical Research; History and advancements in chemistry; Chemistry Education and Research; Science and Science Education; Dye analysis and toxicity