DETERMINATION OF BINARY DIFFUSION-COEFFICIENTS OF ORGANIC-COMPOUNDS IN SUPERCRITICAL CARBON-DIOXIDE BY SUPERCRITICAL FLUID CHROMATOGRAPHY

被引：57

作者：

DAHMEN, N ^{[1
]}

KORDIKOWSKI, A ^{[1
]}

SCHNEIDER, GM ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM,DEPT CHEM,PHYS CHEM LAB,W-4630 BOCHUM,GERMANY

来源：

JOURNAL OF CHROMATOGRAPHY | 1990年 / 505卷 / 01期

关键词：

D O I：

10.1016/S0021-9673(01)93076-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Binary diffusion coefficients, D12, in supercritical carbon dioxide were determined in a supercritical fluid chromatographic apparatus by the peak-broadening method. Organic compounds belonging to three different classes, namely ketones, fatty acids and liquid crystals and additionally squalene were investigated as a function of pressure between 9.5 and 18 MPa at about 314 K. The resulting D12 values are of the order of 10-8 m2 s-2 and 1n D12 decreases approximately linearly with increasng density of the carbon dioxide. © 1990.

引用

页码：169 / 178

页数：10

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