G - Physics – 01 – N
Patent
G - Physics
01
N
150/19, 73/92
G01N 33/18 (2006.01) G01N 31/00 (2006.01)
Patent
CA 1129325
Abstract of the Disclosure The specification discloses an analytical method for the determination of the total nitrogen content in aqueous systems, which comprises passing an inert gas stream containing substantially no nitrogen and carbon dioxide through a reaction tube, which is packed with a decompo- sition catalyst and maintained at a temperatuare of 700 to 1200°C, a condenser and a moisture-absorbing tube in that order, injecting an aqueous test sample to be analyzed into the reaction tube, and directing the gaseous products emerging out of the moisture-absorbing tube to a mass spectrometer to determine the nitrogen content. The specification also discloses an apparatus for carrying out the method. By this method, it is possible to determine the total nitrogen content in nitrogen compounds contained in aqueous systems, rapidly, accurately and with a high sensitivity.
319867
Itoh Tadamasa
Oi Naobumi
Yasumasa Yoshiaki
Kirby Eades Gale Baker
Sumitomo Chemical Co. Ltd.
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