This analytical chemistry paper developed an isotope-dilution tandem ICP-MS method for rubidium in which fluoromethane reaction gas removes the overlap of strontium-87 on rubidium-87. The method gave rubidium results consistent with certified values in food and environmental reference materials without prior chemical separation of strontium.
Key numbers
- This paper reports no numerical findings relevant to strontium exposure.
Methods (brief)
Isotope dilution ICP-QMS/QMS with an octopole reaction cell; fluoromethane converts strontium to strontium fluoride ions while rubidium is largely unreactive; validated on multiple certified reference materials.
Evidence fitness
Off-topic for dietary exposure: it concerns strontium only as a spectral interference in rubidium analysis. It supports a method note for laboratories but no exposure or toxicity claim.
Limitations
One of three authors is employed by the ICP-MS instrument manufacturer whose instrument was used; this is relevant to method promotion, not to strontium evidence.
Related evidence
Update history
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