kvadrupoolmassianalüsaatorid

Quadrupole mass analyzers are a type of mass spectrometer used to determine the mass-to-charge ratio of ions. They operate by using a combination of direct current (DC) and radio frequency (RF) electric fields applied to four parallel electrodes, known as quadrupoles. These oscillating electric fields create a unique potential well that allows only ions of a specific mass-to-charge ratio to pass through to the detector at any given time. Ions with other mass-to-charge ratios will be deflected and collide with the electrodes. By systematically varying the DC and RF voltages, the quadrupole can be scanned to allow ions of different mass-to-charge ratios to reach the detector sequentially, thus generating a mass spectrum.

Quadrupole mass analyzers are widely used in various analytical applications due to their relatively low cost, compact size, and good sensitivity. They are commonly employed in gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) for identifying and quantifying chemical compounds in complex mixtures. Their robustness and ease of operation have made them a staple in many research laboratories, environmental monitoring, and industrial process control settings. Different configurations exist, including linear quadrupoles and ion traps, which offer variations in performance and capabilities.