Chemistry: analytical and immunological testing – Oxygen containing – Hydroxyl containing
Patent
1994-05-23
1996-09-03
Alexander, Lyle A.
Chemistry: analytical and immunological testing
Oxygen containing
Hydroxyl containing
436166, 436900, 422 84, G01N 122
Patent
active
055523242
ABSTRACT:
A reagent, an apparatus and a method for semi-quantitatively estimating the concentration of readily oxidizable organic vapors in a gas sample, as for example ethanol in a human breath sample, is disclosed. The ethanol-sensitive solid indicator is a solid support which contains a permanganate salt and is wetted by a strongly acidic or alkaline solution. In the presence of ethanol the indicator produces a clearly visible color change. The apparatus contains the indicator and provides a pathway for a gas sample through the indicator. The method allows estimation of the organic-vapor content of a gas sample by comparing the volume of indicator which changes color in response to the gas sample with the volume which changes color in response to a known-concentration standard.
REFERENCES:
patent: 2591691 (1952-04-01), Forrester et al.
patent: 2939768 (1960-06-01), Grosskopf
patent: 3223488 (1965-12-01), Luckey
patent: 3455654 (1969-07-01), McConnaughey
patent: 3582274 (1971-06-01), Keyes et al.
patent: 3684456 (1972-08-01), McConnaughey
patent: 3725007 (1973-04-01), Kral et al.
patent: 4155358 (1979-05-01), McAllister et al.
patent: 4656008 (1987-04-01), Gump
patent: 4740475 (1988-04-01), Paul
patent: 4791065 (1988-12-01), Rislova
Shriner et al., "The Systematic Identification of Organic Compounds", pp. 192-195, John Wiley & Sons, (1980).
Regan et al., J. American Chem. Soc. 99:11, pp. 3837-3838, (1977).
Peters et al., "Chemical Separations and Measurements", pp.100-104, and 310, (1974).
Peters et al., "A Brief Introduction to Modern Chemical Analysis", pp.217-221,(1976).
Hawley, "The Condensed Chemical Dictionary", 10th Edition, p.155, Van Nostrand Reinhold Company, Inc., (1981).
Alexander Lyle A.
Supelco Inc.
LandOfFree
Method and apparatus for determining the concentration of readil does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for determining the concentration of readil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the concentration of readil will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1949353