The document discusses hyphenated analytical techniques, specifically gas chromatography-mass spectrometry (GC-MS). It outlines the advantages of hyphenated techniques, describes the instrumentation and interface of GC-MS, and lists several applications including metabolite profiling, detection of compounds in plant tissues, analysis of aromatic amines, identification of volatile components, and environmental and forensic analysis. GC-MS is presented as a powerful technique for the sensitive analysis of various compounds.