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US 8,771,517 B2Granted
IC system including sample pretreatment and using a single pump
AssigneeDionex Corporation
InventorsKannan Srinivasan, Rong Lin
Life of this patent
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Abstract
An IC system including sample preparation. The system includes a liquid sample injection loop, an ion concentrator, an ion separator, and only a single pump for pumping fluid through the system.
Claims7
An ion chromatography method comprising:
- (a) flowing an aqueous liquid stream from an aqueous liquid source through a sample loop containing a liquid sample including ions of interest,
- (b) flowing the step (a) effluent through concentrator ion exchange medium in an ion concentrator to retain said sample ions,
- (c) flowing an eluent through said concentrator ion exchange medium to remove said retained sample ions in a concentrator effluent,
- (d) flowing the step (c) effluent through ion separation medium in an ion separator to separate said sample ions and form an ion separation effluent,
- (e) flowing the step (d) effluent past a detector to detect the separated sample ions, the flow in steps (a) through (d) being performed under pressure applied by a single pump, and
- (f) flowing an aqueous liquid stream from said aqueous liquid source through an eluent generator to generate the eluent of step (c) under pressure applied by said single pump.
3 more elements
Dependencies are inferred from the claim text.