Process for the determination of the concentration of an ionic o

Details Process for the determination of the concentration of an ionic o Process for the determination of the concentration of an ionic o

1990-08-03

1991-11-05

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

2101982, 436161, 73 611C, B01D 1508

Patent

active

050629611

ABSTRACT:
Process for the determination of the concentration of a solute in a solution whose constituents are known.
The first step is to determine the concentration of the hydrogen ions with the aid of an implicit equation as a function of the dissociation constant of the constituents of the solution and the unknown concentration of the solute and then the concentration of the constituents of the solution to which a measurement is sensitive. The concentration of the solute is obtained by comparing the theoretical signal function with the experimental signal.
Particular application to ion exchange chromatography systems with or without chemical suppression.

REFERENCES:
Doury-Berthod, "Theoretical Approach of Dual-Column Ion Chromatography", Analytical Chemistry, vol. 57, No. 12, Oct. 1985, pp. 2257-2263.
Gjerde, "Sodium and Potassium Benzoate and Benzoic Acid as Eluents for Ion Chromatography", Analytical Chemistry, vol. 53, No. 14, Dec. 1981, pp. 2324-2327.
Os, "Linear Calibration in Ion Chromatography By Calculating Total Amounts of Sample From Measured Conductivity Data", Analytica Chimica Acta, 156 (1984), pp. 169-180.
Okada, "Sensitivity of Non-Suppressed Ion Chromatography Using Divalent Organic Acid As Eluents", Journal of Chromatography, 284 (1984), pp. 149-156.
Analytical Chimica Acta, vol. 156, 1984, Elsevier Science Publishers B.V. (Amsterdam, NL), J. J. van Os et al., "Linear calibration in ion chromatography by calculating total amounts of sample from measured conductivity data", pp. 170-173.

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