Method for analytically determining oxygen for each form of oxid

Details Method for analytically determining oxygen for each form of oxid Method for analytically determining oxygen for each form of oxid

1998-07-10

2000-11-07

Ludlow, Jan

Chemistry: analytical and immunological testing

Metal or metal containing

Oxide or gas content of metal

73 1907, 436127, 436157, 436164, 436181, G01N 3320

Patent

active

061435716

ABSTRACT:
The method for analyzing a metal for oxygen, using inert gas carrying fusion/infrared absorption analysis, having the steps of: placing a metal analyte in a graphite crucible; heat-melting the metal analyte; extracting a gas from the melt bath; and analyzing the gas to determine the total oxygen content of the metal in the form of a plurality of separated waves, wherein the metal analyte is heated at a temperature rise rate of not more than 20.degree. C./sec in a period from a starting point A of a first wave to a peak point B of the first wave, held at a constant temperature in a period from the peak point B of the first wave to an end point C of the first wave, and, after the completion of the appearance of the first wave, is heated to melt the metal analyte for further analysis.

REFERENCES:
patent: 4229412 (1980-10-01), Orths et al.
Prumbaum et al., Giessereforschung, vol. 31 (2-3), pp. 71-82, 1979.

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