Analytical method for the determination of nitrogen, carbon, hyd

Details Analytical method for the determination of nitrogen, carbon, hyd Analytical method for the determination of nitrogen, carbon, hyd

1981-11-05

1983-08-30

Turk, Arnold

Chemistry: analytical and immunological testing

Nitrogen containing

Total nitrogen determined

422 78, 422 80, 436123, 436124, 436144, 436145, 436158, 436159, 436160, G01N 3112

Patent

active

044017634

ABSTRACT:
An analytical method for the independent or simultaneous determination of any number of elements selected from the group consisting of nitrogen, carbon, hydrogen and sulfur or chlorine in samples, which comprises passing an oxygen gas through a reaction tube packed with an oxidation catalyst or oxidizing agent having a heating zone of from 800.degree. C. to 1100.degree. C., introducing a sample into said tube to subject it to complete combustion, uniformalizing the gas, dividing the gas into two portions, and introducing one portion in a carrier gas into a copper-reducing tube having a heating zone of from 400.degree. C. to 700.degree. C., determining the resulting nitrogen gas, carbon dioxide gas and steam or acetylene gas on a gas detector, while introducing the second portion in an oxygen gas into an absorption liquor, and determining the resulting sulfate or chlorine ion and, an apparatus useful therefor.

REFERENCES:
patent: 3304159 (1967-02-01), Hinsvark
patent: 3650696 (1972-03-01), Eads
patent: 3698869 (1972-10-01), Condon
patent: 3716334 (1973-02-01), Pont
patent: 3838969 (1974-10-01), Dugan
patent: 3920396 (1975-11-01), Schuy
patent: 4227887 (1980-10-01), Takahashi et al.
patent: 4234315 (1980-11-01), Scott
patent: 4325907 (1982-04-01), Dembicki, Jr. et al.

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