Quadrupole mass analyser

{
  "id": "MLC-T-CHM-009725",
  "term": "Quadrupole mass analyser",
  "field": "Chemistry",
  "definition": "A mass spectrometer component consisting of four parallel rods to which radiofrequency and direct current voltages are applied, creating an oscillating electric field. Ions passing through this field are separated based on their mass-to-charge ratio. Only ions with a specific mass-to-charge ratio can pass through the quadrupole at any given time.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "stable",
    "unstable"
  ],
  "references": [
    "Orange Book, 2nd ed., p. 202 (https://media.iupac.org/publications/analytical_compendium/)",
    "PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1545 (https://doi.org/10.1351/pac199163101541)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/quadrupole-mass-analyser/"
}