The use of 99mTc as a tracer in the determination of 99Tc by ICPmass spectrometry

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Author:	Más Balbuena, José Luis García León, Manuel Bolívar Raya, Juan Pedro Sánchez Angulo, Celestino Ignacio
Department:	Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada I
Date:	2000
Published in:	Journal of analytical atomic spectrometry, 15, 1369-1373
Document type:	Article
Abstract:	The aim of this paper is to carry out a deep study on the possibilities of using 99mTc from 99Mo-99mTc clinical isotope generators to trace the radiochemical separations for 99Tc measurements by ICP-MS. By appropriately de®ning a minimum detectable mass concentration (MDMC) for the mass spectrometer it is possible to conclude that such use is acceptable for a wide range of activities of the tracer. The MDMC increases from 0.41 to 0.51 ppt when the amount of 99mTc added to the samples ranges from 0 to 2 MBq. The purification of the final sample from Ru must be the main objective of the 99Tc measurement method, since its presence noticeably enhances the 99Tc MDMC.