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Countercurrent chromatography with flow-through coil planet centrifuge.
Science (New York, N.Y.)
|July 30, 1971
Summary
A novel countercurrent chromatography method uses a vertical helical tube in a centrifugal field, eliminating rotating seals. This technique enables efficient solute separation through rapid partitioning without solid supports.
Area of Science:
- Analytical Chemistry
- Separation Science
- Chromatography
Background:
- Traditional chromatography often relies on solid supports, which can lead to complications.
- Countercurrent chromatography (CCC) offers a support-free separation method.
- Existing CCC methods may involve complex mechanical setups.
Purpose of the Study:
- To introduce a new, simplified countercurrent chromatography method.
- To demonstrate efficient separation of solutes without solid supports.
- To present a versatile technique applicable to both microanalytical and preparative scales.
Main Methods:
- Development of a vertical helical tube system operating within a centrifugal field.
- Arrangement of the helical tube to revolve without rotating, negating the need for rotating seals.
- Introduction of two immiscible liquid phases to create alternating segments for partitioning.
Main Results:
- Achieved an equilibrium state where phases form multiple alternating segments within the helical coil.
- Demonstrated efficient solute partitioning and separation through the oscillation and elution of phases.
- Successfully illustrated the method's efficacy via microanalytical separation of dinitrophenyl amino acids.
Conclusions:
- The developed centrifugal countercurrent chromatography method provides efficient separation without solid supports.
- The design eliminates complex rotating seals, simplifying the apparatus.
- The technique is suitable for both analytical and preparative-scale chromatographic separations.