Baseline stabiilty in gradient ion chromatography by using a non

Details Baseline stabiilty in gradient ion chromatography by using a non Baseline stabiilty in gradient ion chromatography by using a non

1989-03-02

1990-05-15

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

2101982, 210659, 436150, 436161, 436178, 422 70, B01D 1508

Patent

active

049255673

ABSTRACT:
A stable baseline is achieved in a gradient ion chromatographic analysis by adding a nonionic modifier to the electrolytic eluent. The addition of the modifier may occur at any point upstream of the detector. The nonionic modifier has the effect of shifting the equilibrium of unsuppressed effluent electrolyte towards it nonionic form. For example, the addition of the nonionic modifier shifts both bicarbonate and carbonate towards the nonionic, nonconductive carbonic acid form.

REFERENCES:
patent: 4500431 (1985-02-01), Miyanaga
patent: 4507390 (1985-03-01), Horiuchi
patent: 4751189 (1988-06-01), Rocklin
Rocklin, "Gradient Elution in Ion Chromatography," Journal of Chromatography, 411 (1987) pp. 107-119.
Jones, "Gradient Elution of Anion in Single Column Ion Chromatography," Anal. Chem. 1988, 60, pp. 1977-1979.
Small, "Novel Ion Exchange Chromatographic Method Using Conductimetric Detection," Analytical Chemistry, vol. 47, No. 11, Sep. 1975, pp. 1801-1809.
Shintani, "Gradient Anion Chromatography with Hydroxide and Carbonate Eluents Using Simultaneous Conductivity and pH Detection," Anal. Chem. 1987, 59, pp. 802-808.
Dasgupta, "Ion Chromatographic Separation of Anions with Ion Interaction Reagents and an Annular Helical Suppressor", Anal. Chem. 1984, 56, pp. 769-772.
Tarter, "Gradient Elution Ion Chromatographic Determination of Inorganic Anions Using a Continuous Gradient," Anal. Chem. 1984, 56, pp. 1264-1268.
Sundes, "Separation of Sulfite, Sulfate, and Thiosulfate by Ion Chromatography with Gradient Elution," Anal. Chem. 1983, 55, pp. 2-4.

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