Determination of arsenic and selenium in high-temperature nickel alloys by ICP-MS method with hydride generation of vapor
Now in the modern aviation industry and engine-manufacturing high - temperature nickel alloys, subjecting to huge thermal and power loadings are widely used. Arsenic and selenium presence in nickel alloys leads to catastrophic deterioration of their phys-ical and mechanical properties. In this paper a determination of arsenic and selenium in standard samples of nickel alloys was carried out by mass spectrometry with inductively coupled plasma (ICP-MS), combined with a hydride vapor generation. A technique of dissolution of the probe and its preparation for analysis is given. Spectral interferences were eliminated by separation of the elements determined, using hydrides formation. The detection limit was 0,00001% Se by mass, 0,000005% As by mass, range of determined concentrations: of 0,00006–0,0012% by mass, relative standard deviation of less than 0,05.
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