The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1983
Filed:
Nov. 05, 1981
Tadamasa Itoh, Toyonaka, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
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.