isotope
818O
Oxygen-18 compounds from H₂¹⁸O
¹⁸O₂ · C¹⁸O₂ · Al₂O₃-18 · Fe₂O₃-18 · D₂¹⁸O
Stable isotopes are not radioactive, so they can be used as tracers in studies involving humans — for example, to study the absorption of calcium, iron, zinc and magnesium from food.
| Isotope | Element | Enrichment, at.% | Application |
|---|---|---|---|
| ⁴²Ca | Calcium | 97.90 | tracer in calcium absorption and osteoporosis studies |
| ⁴⁴Ca | Calcium | 99.40 | tracer in calcium metabolism studies; target for scandium-44 production (PET) |
| ⁵⁴Fe | Iron | 96.20 | tracer in iron metabolism studies, target for radionuclide production |
| ⁵⁷Fe | Iron | 93.00 | Mössbauer spectroscopy (the main nucleus of the method), tracer in iron metabolism studies |
| ⁶⁶Zn | Zinc | 98.80 | tracers in zinc metabolism studies (nutrition, medicine) |
| ⁶⁷Zn | Zinc | 90.60 | NMR and Mössbauer spectroscopy (⁶⁷Zn nucleus), tracer |
| ⁷⁰Zn | Zinc | 74.60 | beam for superheavy element synthesis (copernicium), target for copper-67, tracer |
| ²⁶Mg | Magnesium | 99.80 | tracer in magnesium absorption studies (nutrition, medicine) |
| ⁷⁶Se | Selenium | 81.80 | target for bromine-76 production (PET), nutrition tracer |
| ⁷⁷Se | Selenium | 79.20 | NMR spectroscopy (⁷⁷Se nucleus), tracer |
| ⁹⁵Mo | Molybdenum | 96.20 | NMR spectroscopy (⁹⁵Mo nucleus), tracer |
| ⁹⁷Mo | Molybdenum | 95.10 | NMR spectroscopy (⁹⁷Mo nucleus), tracer |
| ⁶⁵Cu | Copper | 99.70 | target for radionuclide production, tracer in copper metabolism studies |
| ⁴¹K | Potassium | 99.10 | tracer in biomedical potassium studies |
| ⁵³Cr | Chromium | 99.10 | NMR (⁵³Cr nucleus), geochemical tracer |
Reference information on typical applications. Enrichment is given according to the producer’s specification. Please confirm the suitability of the isotope for your task (enrichment, chemical form, quantity) in your request. Export of isotope products is subject to export control requirements.