Ion mobility spectrometry is an analytical technique used to separate and identify gas-phase ions based on their differential mobility through a drift gas under the influence of an electric field. This mobility is intrinsically linked to the ion's size, shape, and charge-to-mass ratio. Characterized by its speed, simplicity, and portability, IMS serves as a critical analytical platform for rapid screening and trace detection, finding significant application in fields requiring real-time analysis, and is increasingly coupled with other spectroscopic methods for enhanced analytical capabilities in research and industry.