Method and composition for determination of N-nitrosamines

Details Method and composition for determination of N-nitrosamines Method and composition for determination of N-nitrosamines

1980-07-07

1981-12-01

Marcus, Michael S.

Gas separation

Means within gas stream for conducting concentrate to collector

55518, 261DIG19, 422 52, 422 81, 422 82, B01D 1900, G01N 2176, G01N 3508, G01N 3700

Patent

active

043034195

ABSTRACT:
N-nitrosamines are reacted with a denitrosating agent to cleave the N-NO bond and yield nitric oxide which may be analyzed to determine both qualitatively and quantitatively, the N-nitrosamine content of a test sample. The denitrosating reagent has the advantage of being useful, even in the presence of substantial amounts of water, and comprises a mixture of glacial acetic acid and a concentrated inorganic acid which is either phosphoric acid or sulfuric acid. The volume ratio of glacial acetic to concentrated acid is within the ratio of from 1:2 to 5:1. This acid component mixture is combined with from about 0.1% to about 5% by weight of soluble inorganic bromide or iodide salt.

REFERENCES:
patent: 2967764 (1961-01-01), Skeggs
patent: 3335549 (1967-08-01), Hendrix
patent: 3631654 (1972-01-01), Riely et al.
patent: 3650093 (1972-03-01), Rosenberg
patent: 3754870 (1973-08-01), Carnahan et al.
patent: 3930805 (1976-01-01), Vogt et al.
patent: 4149860 (1979-04-01), Kulik

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