US 2026/0086073 A1 · INTEGRATED ELUENT GENERATOR AND CONTINUOUSLY REGENERATED TRAP COLUMN CARTRIDGE

Abstract

An electrolytic device for an ion chromatography system includes a first electrolyte reservoir including a first electrolyte solution and a first electrode; an eluent generation chamber including a second electrode; and a first ion exchange connector coupling the eluent generation chamber to the first electrolyte reservoir. The first ion exchange connector including one or more first ion exchange membranes allowing passage of counter ions with a first charge but excluding ions with an opposite charge. The electrolytic device further includes a second electrolyte reservoir including a second electrolyte solution and a third electrode; a trap chamber including a fourth electrode; and a second ion exchange connector coupling the trap chamber to the second electrolyte reservoir. The second ion exchange connector including one or more second ion exchange membranes. The second ion exchange membranes excluding ions of the first charge but allowing passage of contaminant ions of the opposite charge.

Claims31

Dependent claims

An electrolytic device for an ion chromatography system, the electrolytic device comprising:

a first electrolyte reservoir including a first electrolyte solution and a first electrode;
an eluent generation chamber including a second electrode;
a first ion exchange connector coupling the eluent generation chamber to the first electrolyte reservoir, the first ion exchange connector including one or more first ion exchange membranes allowing passage of counter ions with a first charge but excluding ions with an opposite charge;
a second electrolyte reservoir including a second electrolyte solution and a third electrode;
a trap chamber including a fourth electrode;
and
a second ion exchange connector coupling the trap chamber to the second electrolyte reservoir, the second ion exchange connector including one or more second ion exchange membranes, the second ion exchange membranes excluding ions of the first charge but allowing passage of contaminant ions of the opposite charge;
wherein the first and third electrodes are connected to a current source and the second and fourth electrodes are connected to a common ground;
wherein the device is configured to generate an eluent for chromatographic separation of ions of a second charge and to remove contaminant ions of the second charge from the eluent.

6 more elements

A method of performing an ion chromatography separation, comprising:

flowing a solvent into an eluent generation chamber, the eluent generation chamber connected to a first electrolyte reservoir with a first ion exchange connector, the first electrolyte reservoir including a first electrolyte solution and a first electrode, the eluent generation chamber including a second electrode, the first electrode connected to a first current supply and the second electrode connected to a common ground;
supplying a current from the first current supply to electrolyze the solvent at the second electrode and to drive eluent counter ions from the electrolyte reservoir through the first ion exchange connector into the solvent to generate an eluent;
flowing the eluent into a trap chamber, the trap chamber connected to a second electrolyte reservoir with a second ion exchange connector, the second electrolyte reservoir chamber including a second electrolyte solution and a third electrode, the trap chamber including a fourth electrode, the third electrode connected to a second current supply and the fourth electrode connected to the common ground;
supplying a current from the second current supply to drive contaminant ions from the trap chamber through the second ion exchange connector into the second electrolyte reservoir;
and
using the eluent to chromatographical separate ions within a sample.

3 more elements

Dependencies are inferred from the claim text.

Integrated eluent generator and continuously regenerated trap column cartridge

Life of this patent

Integrated eluent generator and continuously regenerated trap column cartridge

Life of this patent

Abstract

Claims31