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 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).
Central Analytical Facility Division, Pakistan Institute of Nuclear Science and Technology, Islamabad. Pinstech@paknet2.ptc.pk
Shafaat
S
Ahmed
Nuzhat
N
Jabeen
Ejaz ur
Eu
Rehman