Chemistry: physical processes – Physical processes – Crystallization
Patent
1976-05-14
1978-01-03
Serwin, R.E.
Chemistry: physical processes
Physical processes
Crystallization
23253PC, 23232E, 23254E, G01N 3318, G01N 110, G01N 2718
Patent
active
040664023
ABSTRACT:
An analytical method for determining rapidly and accurately the total nitrogen and/or carbon contents in aqueous systems containing nitrogenous and/or carbonaceous materials, which comprises introducing an aqueous solution containing nitrogenous and/or carbonaceous materials as a specimen to be analyzed together with a carrier gas into a reactor tube packed with a destructive oxidation catalyst and/or a reducing agent and/or an oxidizing agent and maintaining said solution at certain elevated temperatures so as to decompose the nitrogenous and/or carbonaceous materials to nitrogen and/or carbon dioxide and measuring the amounts of nitrogen and/or carbon dioxide in the resulting gaseous mixture by the use of a thermal conductivity gas chromatograph, and an apparatus to be used for carrying out such method.
REFERENCES:
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patent: 3097518 (1963-07-01), Taylor et al.
patent: 3296435 (1967-01-01), Teal et al.
patent: 3304159 (1967-02-01), Hinsuark
patent: 3567386 (1971-03-01), Stenger
patent: 3607071 (1971-09-01), Staffin
patent: 3958937 (1976-05-01), Shibata et al.
Komiyama Yoshiki
Yamamoto Seiya
Yasumasa Yoshiaki
Serwin R.E.
Sumitomo Chemical Company Limited
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