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- Title
Detection of trace impurities by time-of-flight mass spectrometry with laser-induced evaporation.
- Authors
Belyaev, G.; Vasin, A.; Lisitsyn, A.; Frolov, A.; Sheindlin, M.
- Abstract
A method for the determination of trace impurities of tens of ppm in solid materials is proposed, based on laser-induced evaporation of the substance in a vacuum in the forced congruence mode with simultaneous analysis of the evaporation products using a time-of-flight mass spectrometer. The results of measurements of the relative composition of impurities in α-corundum obtained from aluminum hydroxide (AlOOH) powder by high-temperature annealing (1500 and 1800°C) are presented. The necessity of comparative analysis is caused by a substantial difference in the measurement results for impurities in the initial material obtained by conventional methods. The reported values of the relative composition of impurities are in a good agreement with the results of inductively coupled plasma mass spectrometry.
- Subjects
ALUMINUM hydroxide; INDUCTIVELY coupled plasma mass spectrometry techniques; EVAPORATION (Chemistry); CORUNDUM; ANNEALING of crystals
- Publication
High Temperature, 2017, Vol 55, Issue 1, p57
- ISSN
0018-151X
- Publication type
Article
- DOI
10.1134/S0018151X16050084