Determination of the selenium isotopic compositions in Se-rich yeast by hydride generation-inductively coupled plasma multicollector mass spectrometry

Johann Far, Sylvain Bérail, Hugues Preud'Homme, Ryszard Lobinski

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A method was developed for the precise determination of selenium isotopic compositions (δ82/77Se, δ82/76Se and δ82/74Se) by hydride generation inductively coupled plasma multiple collector mass spectrometry (HG-MC ICP MS) in Se-rich yeast. The conversion of all the selenium forms into Se(iv) during digestion and reduction steps was investigated by anion-exchange ICP quadrupole MS (SAX ICP Q MS) and was found to be complete. Measurement precision values expressed as deltas (δ) with regard to NIST SRM3149 were between 0.2-0.4‰ (2SD) over a period of 6 months for 25 or 50 ng mL-1 of introduced selenium. The application of the method to the analysis of nine Se-rich yeast supplements from different manufactures showed significant variations in the isotope ratios suggesting that the latter can be an attractive parameter for the yeast provenance discrimination.

Original languageEnglish
Pages (from-to)1695-1703
Number of pages9
JournalJournal of Analytical Atomic Spectrometry
Volume25
Issue number11
DOIs
Publication statusPublished - 1 Nov 2010
Externally publishedYes

Fingerprint

Inductively coupled plasma mass spectrometry
Selenium
Hydrides
Yeast
Chemical analysis
Inductively coupled plasma
Isotopes
Anions
Mass spectrometry
Ion exchange

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Determination of the selenium isotopic compositions in Se-rich yeast by hydride generation-inductively coupled plasma multicollector mass spectrometry. / Far, Johann; Bérail, Sylvain; Preud'Homme, Hugues; Lobinski, Ryszard.

In: Journal of Analytical Atomic Spectrometry, Vol. 25, No. 11, 01.11.2010, p. 1695-1703.

Research output: Contribution to journalArticle

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