Determination of Lithium Isotopic Composition by Thermal Ionization Mass Spectrometry

Determination of Lithium Isotopic Composition by Thermal Ionization Mass Spectrometry

A mass spectrometric method has been proposed for the determination of the isotopic composition of lithium. It is based upon thermal ionization of LiOH loaded onto a single SiO2-coated Re filament. By this method, stable emissions of Li+ ion have been achieved for an extended period of time. The pro...

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Veröffentlicht in:Analytical chemistry (Washington) 2002-08, Vol.74 (16), p.4133-4135
Hauptverfasser: Ahmed, Shafaat, Jabeen, Nuzhat, Rehman, Ejaz ur
Format: Artikel
Sprache:eng
Schlagworte:
Analytical chemistry
Chemical bonds
Chemistry
Exact sciences and technology
Ions
Lithium
Scientific imaging
Spectrometric and optical methods
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Zusammenfassung:A mass spectrometric method has been proposed for the determination of the isotopic composition of lithium. It is based upon thermal ionization of LiOH loaded onto a single SiO2-coated Re filament. By this method, stable emissions of Li+ ion have been achieved for an extended period of time. The proposed method is capable of analyzing trace quantities (∼40 ng) of Li in the presence of sodium with an uncertainty of ±0.000 25 (two standard deviations of the mean).
ISSN:0003-2700
1520-6882
DOI:10.1021/ac0112768