[Show abstract][Hide abstract] ABSTRACT: The isotopic composition of lithium in seawater has been determined by thermal ionization mass spectrometry (TIMS) based on the use of lithium hydroxide as the ion source. Isotopic measurements in a reference material supplied by IAEA (L-SVEC Li2CO3) were made to check the reproducibility of the method and 6Li indicates mobilization of light isotope of lithium form the sediment.
No preview · Article · Jan 2003 · Journal of Radioanalytical and Nuclear Chemistry
[Show abstract][Hide abstract] ABSTRACT: 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 (approximately 40 ng) of Li in the presence of sodium with an uncertainty of +/-0.000 25 (two standard deviations of the mean).
No preview · Article · Sep 2002 · Analytical Chemistry