Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1993-10-27
1994-12-20
Housel, James C.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
422 681, 422 81, 422 8208, 436116, G01N 2176, G01N 3350
Patent
active
053743970
ABSTRACT:
The present invention relates to a device for the measurement of NO contents in liquids using an inert carrier gas, where the device consists out of micro reaction part FIG. 1 which is divided into an inert gas inlet nozzle 1, the microreaction vessel 2 with frit 3, at least one inlet nozzle for the injection of the liquid to be analyzed 4, as well as a cooled outlet nozzle for the inert gas loaded with NO 5, and a detector 6, with which the NO content of the inlet liquid is measured and evaluated, and where the NO.sub.2.sup.- ions present in the solution are reduced back to NO using a reaction mixture consisting out of 1,1'dimethylferrocene in acetonitrile in an acidic medium, preferably perchloric acid.
REFERENCES:
patent: 4221761 (1980-09-01), Bullens et al.
Peter Mordvintcev, et al., On Line Detection of Nitric Oxide Formation in Liquid Aqueous Phase by Electron Paramagnetic Resonance Spectroscopy, 1991, pp. 142-146.
Mark Bollinger and Robert E. Sievers, Conversion of Nitrogen Dioxide, Nitric Acid, and n-Propyl Nitrate to Nitric Oxide by Gold-Catalyzed Reduction with Carbon Monoxide, 1983, pp. 1980-1986.
Oliver C. Zafiriou and Mack McFarland, Determination of Trace Levels of Nitric Oxide in Aqueous Solution, 1980, pp. 1662-1667.
Chemical Abstracts, vol. 113, (16), 1990, Ref.: 139557g.
Housel James C.
Redding David
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