Ion mobility spectrometry

{
  "id": "MLC-T-CHM-006088",
  "term": "Ion mobility spectrometry",
  "field": "Chemistry",
  "definition": "A technique that separates gas-phase ions according to how quickly they move through a neutral gas when an electric field is applied. Ions are pulsed into a drift region and their drift times are recorded at a detector, with longer times for ions of larger collision cross-section and lower charge. It is coupled to mass spectrometry in many instruments, which adds separation by mass-to-charge ratio, and drift times are converted to collision cross-sections in square angstroms.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "buffer gas",
    "high-field asymmetric waveform ion mobility spectrometry"
  ],
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1554 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/ion-mobility-spectrometry/"
}