GC-MS integrates Gas Chromatography (GC) with Mass Spectrometry (MS) to provide detailed analysis and identification of complex chemical mixtures. The GC component separates the sample, and the MS component identifies and quantifies each compound based on its mass-to-charge ratio. GC-MS is widely used in forensic analysis, environmental monitoring, and toxicology due to its ability to detect trace levels of compounds in air, water, and soil. It is an essential tool for applications requiring precise and sensitive compound detection.