Development of techniques for the isolation of iron from biological material for measurement of isotope ratios by fast atom bombardment mass spectrometry.
Anal Chem
; 65(23): 3501-4, 1993 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-8297032
ABSTRACT
Stable isotopes have gained prominence in nutrition and trace element research. Fast atom bombardment mass spectrometry (FAB-MS) measurement of iron isotope ratios has an accuracy of > or equal to 99.7% with the stable isotopes (54)Fe, (56)Fe, and (58)Fe with relative standard deviations (RSDs) of < or equal to 0.9%. The isolation of iron from biological matrices can be accomplished in 4 h with almost total removal of isobaric interferences caused by (39)KOH, (39)K.H2O, (40)CaOH, and/or (40)Ca.H2O. FAB-MS isotope enrichment measurements from this method compare favorably to predicted absorption/enrichment levels.
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Base de dados:
MEDLINE
Assunto principal:
Espectrometria de Massas de Bombardeamento Rápido de Átomos
/
Eritrócitos
/
Ferro
/
Isótopos de Ferro
Limite:
Humans
Idioma:
En
Ano de publicação:
1993
Tipo de documento:
Article