Apparatus for the determination of bond forms of gases

Details Apparatus for the determination of bond forms of gases Apparatus for the determination of bond forms of gases

1978-12-13

1980-10-21

Serwin, R. E.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

23230PC, 73 25, 422 78, G01N 3112, G01N 3320

Patent

active

042294126

ABSTRACT:
Apparatus for the determination of bond forms of gases, such as a sample containing oxygen or nitrogen in solid or liquid small metal samples (e.g. from 0.8 to 1.2 g).
The apparatus includes a furnace to heat the sample to a temperature of about 3000.degree. C. maximum in less than five minutes, a control device to control the rate at a value between 20.degree. C./sec and 350.degree. C./sec, a gas analyzer coupled to the furnace to indicate as a function of the supplied gas the quantities of gas released from the furnace in equal periods of time, and a computer coupled to the furnace and to the gas analyzer for receiving therefrom a measured value sequence in the form of a curve (Evologram) related to the gas quantities released per unit time to the computer for the determination of the bond forms of the gases contained in the sample, and the computer forms a first derivative curve and a second derivative curve from the measured value curve (Evologram) to form measured values between successive points in a minimum position and/or points which occur as a second inflection point immediately after a first inflection point on the measured value curve, these point positions being identified by zero indications and extreme positions on the derivative curves.

REFERENCES:
patent: 3279888 (1966-10-01), Holler
patent: 3407041 (1968-10-01), Kraus
patent: 3847546 (1974-11-01), Paul

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