Method of analyzing the concentration of components in a solutio

Details Method of analyzing the concentration of components in a solutio Method of analyzing the concentration of components in a solutio

1997-01-23

1998-03-17

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrophotometer

356326, 356436, G01N 2159, G01N 2190

Patent

active

057293422

ABSTRACT:
A method of analyzing the concentration of components in a fluid solution that can be contaminated with gas bubbles includes applying a spectrum of light to a test cell holding a sample fluid solution and detecting the measurement of the intensity of light passing through the test cell. A gas of the type that would be found in the sample fluid solution can be initially inserted into the test cell with light of a predetermined range of wavelengths scanning the test cell to obtain a reference spectrum. The test cell is then filled with the sample fluid solution and the light measurement is again conducted to obtain a sample spectrum. Data processing can occur to derive a light absorbance spectrum from the reference spectrum and sample spectrum to enable a determination of the percentage of concentrations of each component from the light absorbance spectrum, including the percentage of gas. Adding the determined percentages of concentration will provide a total amount, and comparing this total amount with a predetermined value can verify the accuracy of the concentration of components. If the data is contaminated as a result of an excess presence of gas bubbles, this data can be discarded to insure that the proper amount of concentrations is determined.

REFERENCES:
patent: 5272345 (1993-12-01), Durham et al.

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