Isotopically enriched ions

{
  "id": "MLC-T-CHM-006252",
  "term": "Isotopically enriched ions",
  "field": "Chemistry",
  "definition": "Ions that have a higher abundance of a specific isotope than its natural isotopic abundance. These ions are produced by using starting materials that have been artificially enriched with a particular isotope. Isotopically enriched ions are widely used as internal standards in quantitative mass spectrometry and for mechanistic studies.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "nuclide"
  ],
  "references": [
    "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 1549 (https://doi.org/10.1351/pac199163101541)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/isotopically-enriched-ions/"
}