Quadrupole Mass Spectrometry (QMS) is an analytical technique used to measure the mass-to-charge ratio of ions. It consists of four parallel rods, known as a quadrupole, which create an oscillating electric field. This field allows only ions of a specific mass-to-charge ratio to pass through to the detector, while others are filtered out. QMS is widely used in various fields, including catalysis, to analyze reaction intermediates, products, and gas-phase species.
