Preparative liquid chromatograph system and preparative...

Details Preparative liquid chromatograph system and preparative... Preparative liquid chromatograph system and preparative...

2011-01-04

2011-01-04

Therkorn, Ernest G (Department: 1797)

Liquid purification or separation

Processes

Chromatography

C210S198200

Reexamination Certificate

active

07862724

ABSTRACT:
A technique for extracting an objective component from a sample solution and obtaining the component in the form of equally separated powder aliquots is provided. A peak detector12detects the start point of the peak of the objective component on a chromatogram created from detection signals produced by a detector5. Then, a controller14immediately changes a valve6so that the eluate will flow to a trap column7a. A peak area processor13calculates the peak area of the objective component in real time. When the calculated area has exceeded a threshold, the controller14changes the valve6so that the eluate will flow to the next trap column7b. Thus, the trap columns7ato7dare sequentially selected to divide the peak into one or more portions with the same area so that the objective component in the eluate will be sequentially captured by the trap columns7ato7d. Subsequently, the objective component is eluted from each trap column, and then the solvent is vaporized, to obtain powder of the objective component.

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PTO 10-4653 of Japan Patent No. 2003149217.

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