Article (Scientific journals)
Determination of the selenium isotopic compositions in Se-rich yeast by hydride generation-inductively coupled plasma multicollector mass spectrometry
Far, Johann; Berail, S.; Preud'homme, H. et al.
2010In Journal of Analytical Atomic Spectrometry, 25 (11), p. 1695-1703
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Abstract :
[en] A method was developed for the precise determination of selenium isotopic compositions (delta Se-82/77, delta Se-82/76 and delta Se-82/74) 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 (delta) with regard to NIST SR M3149 were between 0.2-0.4 parts per thousand (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.
Disciplines :
Chemistry
Author, co-author :
Far, Johann  
Berail, S.
Preud'homme, H.
Lobinski, R.
Language :
English
Title :
Determination of the selenium isotopic compositions in Se-rich yeast by hydride generation-inductively coupled plasma multicollector mass spectrometry
Publication date :
2010
Journal title :
Journal of Analytical Atomic Spectrometry
ISSN :
0267-9477
eISSN :
1364-5544
Publisher :
Royal Society of Chemistry, Cambridge, United Kingdom
Volume :
25
Issue :
11
Pages :
1695-1703
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 April 2011

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