Measuring and testing – Gas content of a liquid or a solid – Particular separator
Patent
1992-07-30
1993-06-15
Noland, Tom
Measuring and testing
Gas content of a liquid or a solid
Particular separator
73 6141, G01N 3318
Patent
active
052188566
ABSTRACT:
A method for determining the concentration of individual solutes in a body of liquid, e.g., measuring contaminants in waste water. A sparging IR process is used, in which gas in the form of minute bubbles moves upwardly in a non-flowing body of liquid. The gas remove vaporized samples of the subject solutes and flows to a gas cell, where it is subjected to infrared spectrometer analysis. The true concentration of each subject solute is measured by plotting its concentration values against elapsed time, and then extrapolating back to time zero to determine the initial concentration of the solute. In addition, the rate of depletion is used to determine the ratio of vapor pressure to solubility of the solute. Replotting the original data using logarithm values can simplify the extrapolation.
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Axiom Analytical, Inc.
Noland Tom
Plante Thomas J.
Roskos Joseph W.
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