By Alain P. Foucault
This quantity within the Chromatographic technology sequence introduces centrifugal partition chromatography (CPC) for any biphasic process, providing thorough insurance of instrumentation, thought, liquid-liquid partition co-efficients and CPC in natural and inorganic chemistry. Over eighty diagrams for three-solvent structures that may be utilized to almost all partitioning, separation and purification events, are contained.
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Extra resources for Centrifugal Partition Chromatography
12) and g. Assuming that the efficiency is linearly related to the interfacial area, verification of Eq. 12 or 13 with respect to g has been done using the HPCPC. We T used the system ~-heptane/methanolin the descending mode, the rotational speed being varied between 700 and 2000 rpm. The flow rate was kept constant and equal to 7 mumin, and the volume of mobile phase, Vm, was 120 rt: 4 ml, 27 ml more than the calculated Vmmin, in order to keep this volume as constant as possible t ~oughoutthe experiments-this parameter has a strong influence upon the efficiency, as we will show.
53:1345 (1981). 25. R. A. Menges, L. A. W. Armstrong, Anal. , 652873 (1993). 26. P. L. Layman, Chem. Eng. News, Jan. 20, p. 21(1986). 27. S. L. Boyer, K. E Guin, R. M. L. Mausner, H. E Robinson, T. M. Schmitt, C. R. Stahl, and E. A. Setzbom, Environ. Sci. , II:1167 (1977). 28. E. Stephanon and W. Giger, Environ. Sci. , 16(11):8OO (1982). 29. R. A. Menges, T. S. Menges, G. L. W. Armstrong, and L. A. Spino, J. Liq. , 152909 (1992). 30. A. Foucault and K. Nakanishi, J. Liq. , 12:2587 (1989); and 13:3583 (1990).
This correlation could be interpreted as follows: 1. Y small AP A small and B large Small and unstable droplets moving slowly, and easily broken into smaller ones, leading to some possible emulsification, dragging the stationary phase out of the column. These systems can be used at low flow rate, in order to minimize emulsification and keep a sufficient amount stationary of phase in the column. _ 0 9 5 o n stable less stable 0 1 I 10 1000 L AP 7 Correlation between the average linear velocity of the mobile phase in the channels of theJ3PCPCandtheparameter ylAp.