Chemistry: physical processes – Physical processes – Crystallization
Patent
1975-09-17
1976-12-07
Serwin, R.E.
Chemistry: physical processes
Physical processes
Crystallization
23230R, 23230M, 23232R, 23232E, 23253PC, 23254R, 23254E, 23232C, G01N 2152, G01N 2354, G01N 3110
Patent
active
039960021
ABSTRACT:
The N-nitroso compound content of a sample is measured by selectively breaking the N-NO bond in the N-nitroso compound molecule by non-catalytic pyrolyzation at temperatures in the range 300.degree. C to 500.degree. C, thereby liberating nitric oxide (NO), and by the subsequent measurement of the amount of nitric oxide liberated. The apparatus comprises a chromatograph and an NO detector together with a non-catalytic pyrolyzer. The pyrolyzer includes a chemically inert material configured to provide a cylindrical cross-section flow path for the chromatograph effluent. The pyrolyzer further includes the temperature control means for adding thermal energy at a controlled rate so that the flow path is characterized by temperatures in the range of 300.degree. C to 500.degree. C.
REFERENCES:
patent: 3304159 (1967-02-01), Hinsvark
patent: 3403978 (1968-10-01), Favre
patent: 3647387 (1972-03-01), Benson et al.
patent: 3718429 (1973-02-01), Williamson, Jr.
patent: 3746513 (1973-07-01), Warnick et al.
patent: 3847546 (1974-11-01), Paul
patent: 3877875 (1975-04-01), Jones et al.
C. H. Bamford, J. Chem. Soc., pp. 12-17 (1939).
Neal James L.
Serwin R.E.
Thermo Electron Corporation
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