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Journal of Liquid Chromatography & Related Technologies Volume 33, 2010 - Issue 3
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Original Articles

NOVEL DESIGN FOR CENTRIFUGAL COUNTERCURRENT CHROMATOGRAPHY: II. STUDIES ON NOVEL GEOMETRIES OF ZIGZAG TOROIDAL TUBING

Yi Yang Bioseparation Technology Laboratory, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA; Xinjiang Key Laboratory of Plant Resources and Natural Products Chemistry, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, P. R. China; Graduate University of the Chinese Academy of Sciences, Beijing, P. R. China
,
Haji Akber Aisa Xinjiang Key Laboratory of Plant Resources and Natural Products Chemistry, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, P. R. China
&
Yoichiro Ito Bioseparation Technology Laboratory, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USACorrespondence[email protected]
Pages 336-348 | Published online: 27 Jan 2010
 
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Abstract

The toroidal column using a zigzag pattern has been improved in both retention of the stationary phase and peak resolution. To further improve the retention of stationary phase and peak resolution, a series of novel geometric designs of tubing (plain, mid clamping, flattened, and flat twisted tubing) was evaluated for their performance in CCC. The results showed that the tubing, which was flattened vertically against the centrifugal force (vert-flattened tubing) produced the best peak resolution among them. Using vert-flattened tubing a series of experiments was performed to study the effects of column capacity and sample size. The results indicated that a 0.25 mL capacity column is ideal for analysis of small amount samples.

Notes

Note: ∗Resolution was adjusted at the same capacity

∗∗Resolution was adjuested at the same length.

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