Abstract
The mass-spectrometric method for the analysis of inorganic solutions is not only a very sensitive technique but also one of broad applicability. The study of the behaviour of solutions of mineral acids chilled to −70°C under a r.f. voltage from 7 to 15 kV indicated that solutions of hydrochloric acids containing 20–32% of hydrogen chloride allow to obtain stable ion currents. The equipment for the analysis of solutions on the spark source mass-spectrometer is designed and the procedure of analysis is described. The detection limits of 47 elements are in the range from 10−7 to 10−11 g. The accuracy of the determinations was established by the “added-found” method. The reproducibility is 0.1–0.34 for content levels of 10−7–10−9 g. The analytical possibilities of different spark source mass-spectroscopic methods for the analysis of solutions are compared.
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