Reference ion

{
  "id": "MLC-T-CHM-010068",
  "term": "Reference ion",
  "field": "Chemistry",
  "definition": "An ion of known mass-to-charge ratio that is introduced into a mass spectrometer to calibrate the mass scale. These ions provide distinct, well-defined peaks in the mass spectrum, allowing for accurate assignment of m/z values to unknown analytes. Common reference ions are often derived from perfluorinated compounds due to their characteristic fragmentation patterns.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1584 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/reference-ion/"
}