W. Schelles et al., EVALUATION OF SECONDARY CATHODES FOR GLOW-DISCHARGE MASS-SPECTROMETRYANALYSIS OF DIFFERENT NONCONDUCTING SAMPLE TYPES, Applied spectroscopy, 49(7), 1995, pp. 939-944
The use of different secondary cathodes is evaluated for the analysis
of solid, nonconducting samples by means of de glow discharge mass spe
ctrometry. Optimum discharge conditions and analytical characteristics
are reported for the analysis of a compacted iron ore sinter and a so
lid glass sample, both with known composition. These conditions seem t
o differ significantly for the two samples under consideration. This d
ifference is assumed to be caused mainly by the electrical characteris
tics of the sample. The electrical resistivity of the sample is indeed
found to be an important factor, determining the capabilities of the
technique, especially with respect to the detection power.