CONCENTRATION AND CHARACTERIZATION OF DILUTE COLLOIDAL SAMPLES BY POTENTIAL-BARRIER FIELD-FLOW FRACTIONATION

被引：24

作者：

KOLIADIMA, A ^{[1
]}

KARAISKAKIS, G ^{[1
]}

机构：

[1] UNIV PATRAS,DEPT CHEM,GR-26500 PATRAI,GREECE

来源：

CHROMATOGRAPHIA | 1994年 / 39卷 / 1-2期

关键词：

ONE-PHASE CHROMATOGRAPHY; FIELD-FLOW FRACTIONATION (FFF); POTENTIAL-BARRIER FFF; COLLOIDAL MATERIALS;

D O I：

10.1007/BF02320462

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Potential-barrier field-flow fractionation, which is a combination of potential-barrier chromatography and sedimentation field-flow fractionation, is shown to be a convenient and accurate method for the concentration and analysis (separation and characterization) of dilute colloidal samples. Two sizes (0.158 and 0.271 mum) of haematite (alpha-Fe2O3) monodisperse colloidal samples diluted in volumes of up to 20 cm3 are used as model colloids. The particle diameters found by the present concentration procedure under various experimental conditions are in good agreement with those determined by conventional sedimentation field-flow fractionation, in which a small concentrated sample volume was injected directly into the column.

引用

页码：74 / 78

页数：5

共 24 条

[1]

CUO RJ, 1980, J COLLOID INTERF SCI, V78, P407

[2] CHARACTERIZATION OF INORGANIC COLLOIDAL MATERIALS BY STERIC FIELD-FLOW FRACTIONATION .1. DETERMINATION OF PARTICLE-SIZE DISTRIBUTION [J].