Method for infrared-optical determination of the concentration o

Chemistry: analytical and immunological testing – Phosphorus containing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

436100, 436129, 436164, G01N 3300

Patent

active

059226099

ABSTRACT:
In a method for infrared-optical determination of the concentration of at least one chemical analyte in a liquid sample, where the liquid sample is passed through a measuring cell and irradiated with infrared radiation of a single narrow waverange and infrared absorption is measured, the analyte being determined is subject to a chemical reaction before measurement, which should leave the other components of the liquid sample unaffected, and the change in infrared absorption caused by the chemical reaction with the analyte is measured as a unique function of the analyte concentration to be determined.

REFERENCES:
patent: 3125419 (1964-03-01), Geld et al.
patent: 3795484 (1974-03-01), Daly et al.
patent: 4599316 (1986-07-01), Hahn et al.
patent: 5212099 (1993-05-01), Marcus
patent: 5252486 (1993-10-01), O'Lear et al.
patent: 5310526 (1994-05-01), Yalvac et al.
patent: 5492718 (1996-02-01), O'Neill et al.
patent: 5646315 (1997-07-01), Schultz et al.
patent: 5783251 (1998-07-01), Tomozawa et al.
International Publication No. WO 85/04478 to Pentti Niemela et al. entitled, "Procedure for Measuring Contents of Hydrocarbons in Liquids Containing Such," dated Oct. 10, 1985.
Vonach, R.; Lendl, B.; and Kellner, R. "Modulation of the pH in the Determination of Phosphate with Flow Injection and Fourier Transform Infrared Detection." Analyst, 122, 525-530, Jun. 1997.
Daniel, T.B.; Scherson, D. A.; and Yeager, E. B. "Infrared Spectroscopic Determination of pH Changes in Diffusionally Decoupled Thin-Layer Electrochemical Cells." Anal. Chem. 62, 45-49, 1989.
Rudolph, W., and Steger, W. E. "Dissociation, Structure, and Rapid Proton Exchange of Phosphoric Acid in Dilute Aqueous Solutions. V. Vibrational Spectra of Phosphoric Acid." Z. Phys. Chem. (Munich) (1991), 172(1), 49-59.
Vonach, R.; Kellner, R.; and Lippitsch, M. "A Phosphate Sensor for Soft-Drinks Based on IR-Spectroscopy." Curr. Status Future Trends Anal. Food Chem., Proc. Eur. Conf. Food Chem., 8th (1995), vol. 3, 573-577.
Esteves da Silva, Joaquim; Machado, A.; and Oliveira, C. "Monitoring of Molecular Transformations in Acid-Base Reactions by Evolving Factor Analysis of Fourier Transform Infrared Spectral Data." Talanta, 43, 1443-1456, Sep. 1996.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for infrared-optical determination of the concentration o 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 for infrared-optical determination of the concentration o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for infrared-optical determination of the concentration o will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2275319

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.