Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Corrosion resistance or power
Patent
1994-03-29
1995-02-14
Redding, David A.
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
Corrosion resistance or power
436 56, 436 85, 436104, 436120, 436128, 436129, 436172, G01N 2164
Patent
active
053895487
ABSTRACT:
Concentration of a polyelectrolyte in the water of an aqueous system is controlled by first withdrawing a sample of the water and adding a known or standard amount of a fluorochromatic reagent to the sample. Then light energy is directed into the sample whereby light energy of a selected excitation wavelength for the fluorochromatic dye is available for absorption by the fluorochromatic reagent. The intensity of light emitted about a selected emission wavelength for the fluorochromatic reagent is measured and the intensity of the emitted light is compared to a standard curve, comprising a plot of fluorescence emission intensity of the fluorochromatic reagent in the presence of a polyelectrolyte versus concentration the polyelectrolyte. The concentration of the polyelectrolyte in the sample of water is determined from the comparison.
REFERENCES:
patent: 4783314 (1988-11-01), Hoots et al.
patent: 4894346 (1990-01-01), Myers et al.
patent: 4992380 (1991-02-01), Moriarty et al.
patent: 5120661 (1992-06-01), Baker et al.
patent: 5128419 (1992-07-01), Fong et al.
Hoots John E.
Kugel Roger W.
Pierce Claudia C.
Drake James J.
Miller Robert A.
Nalco Chemical Company
Redding David A.
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