The interfacing of an electrothermal vaporization (ETV) unit to an inductively coupled plasma mass spectrometer (ICPMS) produces a powerful system for ultra-low-level compositional analysis of micro-volume samples, as well as decreasing some of the molecular interferences inherent in a conventional-nebulization ICPMS. Some problems still remain with this technique in respect to signal variation, sample heating profiles, and instrument tuning parameters. Advances are presented concerning the instrumental conditions necessary for lowering signal variation. These include optimization of "dry-plasma" tuning of the spectrometer lens stack, furnace cooling/heating, and tube mounting. Novel ways of enhancing sensitivity by multiple deposition, preconcentration, and chemical modification have been investigated with particular emphasis on uranium and radium determination.

PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription