Laser ablation for ICP/MS analysis of radioactive materials
For the analysis of nuclear samples, ICP/MS can provide information on both stable and unstable isotopes at very low concentrations. The instrument has, however, to be adapted for working with radioactive materials, i.e. in a glovebox. In order to extend the ICP/MS method to the direct chemical analysis of solids without prior dissolution, laser ablation has been used. The field of application is the analysis of residues which are difficult to dissolve, of powders, and of highly radioactive materials. For the latter, the samples to be analysed must be handled in a hot cell. A commercial laser ablation system has been modified for hot cell operation; the sampling case was removed from the original device and installed inside the hot cell. All the other elements of the installation were kept outside the cell and connections were arranged between the sampling case and the outside elements, and also with the glovebox containing the ICP plasma torch. This installation is described in detail. First results of a parallel study on the mechanisms of laser ablation and the influence of the different parameters (e.g. wavelength of the laser light) are also presented.
Bibliographic Reference: Paper presented: XXVII Colloquium Spectroscopicum Internationale, Bergen (NO), June 9-14, 1991
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Record Number: 199111337 / Last updated on: 1994-12-02
Original language: en
Available languages: en