Chemistry: analytical and immunological testing – Inorganic acid or base – Halogen containing
Patent
1989-09-29
1993-09-21
Housel, James C.
Chemistry: analytical and immunological testing
Inorganic acid or base
Halogen containing
436124, 436133, 436143, 436146, 436160, 436171, 422 80, 422 8205, 356315, G01N 2172
Patent
active
052468682
ABSTRACT:
Apparatus and method for qualitatively and quantitatively analyzing infrared emission from excited molecules in samples of interest is disclosed. Over the wavelength interval from 1 to 5 um, two strong emission bands are observed with a PbSe detector when organic compounds are introduced into an hydrogen/air flame. The band at 4.3 um (2326 cm.sup.-1 is due to the asymmetric stretch of carbon dioxide while the band at 2.7 um is due to both water and carbon dioxide emission. The carbon dioxide emission at 4.3 um is most intense at the tip of the flame, and increases with the amount of organic compound introduced into the flame. For chromatographic application, an optical filter can be used to isolate the 4.3 um emission band. The infrared emission detection system finds application in the determination of total inorganic carbon, chloride and available chlorine in aqueous samples. The detector is optimized by use of a dual beam system with background subtraction capabilities thereby eliminating background noise and the fluctuations therein.
REFERENCES:
patent: 3696247 (1972-10-01), McIntosh et al.
patent: 3854881 (1974-12-01), Cohen
patent: 4730925 (1988-03-01), Chiba et al.
patent: 4849636 (1989-07-01), Fertig, Sr.
patent: 5153673 (1992-10-01), Amirav
Davidchuck, et al., "Unit for Investigating the Radiation Spectrum of the Combustion Products of Condensed Systems In the Range of 0.5-8 .mu.M", Combustion Explosion & Shock Waves, vol. 10, No. 5, Sep. 1974, pp. 683-685.
Hylton, et al., "System for the Measurement of Spectral Emittance at High Temperature", AIAA Journal, vol. 14, No. 9, Sep. 1976, pp. 1303-1310.
Hergert, et al., "Remote Fourier Transform Infrared Air Pollution Studies", Optical Engineering, vol. 19, No. 4, Jul. 1980, pp. 508-514.
Plyler, et al., J. Opt. Soc. Amer. 1952 42 360.
Gaydon, A. G., The Sepctroscopy of Flames, Chapman and Hall: London 1974, pp. 221-243.
Gaydon, et al., Flames, their Struction, Radiation and Temperature, 4th Ed., Chapman and Hall: London 1979, pp. 238-259.
Plyler, E. K., J. Res. Nat. Bur. Stand., 1948 40 113.
Nakamoto, K., Infrared Spectra of Inorganic and Coordination Compounds, John Wiley, New York 1963, p. 77.
Curcio, et al., Appl. Opt., 1966 5 231-233.
Putley, Optical and Infrared Detectors, Keyes (Ed.) Springer-Verlag, Berlin, 1980, Chp. 3.
Boyd, Radiometry and the Detection of Optical Radiation, John Wiley, New York 1983, Chp. 10.
Busch, et al., Anal. Chem., 1974 46 1231.
Garrett, R. L., J. Pet. Tech., Jun. 1978, p. 860.
Small, R. A., et al., International Laboratory, May 1986.
Bernard, A Summary of TOC Developments, Jun. 1985.
Small, Pollution Engineering, Sep. 1980, p. 53.
Capelle, et al., Review of Scientific Instruments, vol. 49, No. 8, Aug. 1978, pp. 1124-1129.
Karger, et al., An Introduction to Separation Science, Wiley, New York 1973, pp. 232-236.
Greenberg, et al., Eds, Standard Methods for the Examination of Water and Wastewater, American Public Health Association, Washington, D.C. 1985, pp. 286-294.
Manahan, S. E., Environmental Chemistry, 3rd E., Willard Grant Press, Boston, Mass. 1979, p. 29.
Busch Kenneth W.
Busch Marianna A.
Hudson M. Keith
Kubala, Jr. Sidney W.
Lam Christopher K. Y.
Housel James C.
Research Corporation Technologies Inc.
Snay Jeffrey R.
LandOfFree
Infrared emission detection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Infrared emission detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared emission detection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1049299