EFFECTS OF IONIC-STRENGTH OF ELUENT ON RETENTION BEHAVIOR AND ON THE PEAK BROADENING PROCESS IN HOLLOW FIBER FLOW FIELD-FLOW FRACTIONATION

被引：21

作者：

CARLSHAF, A ^{[1
]}

JONSSON, JA ^{[1
]}

机构：

[1] UNIV LUND,DEPT ANALYT CHEM,POB 124,S-22100 LUND,SWEDEN

来源：

JOURNAL OF MICROCOLUMN SEPARATIONS | 1991年 / 3卷 / 05期

关键词：

HOLLOW FIBER; FLOW FIELD-FLOW FRACTIONATION; RETENTION DISTURBANCES; PARTICLE-WALL INTERACTION; IONIC STRENGTH;

D O I：

10.1002/mcs.1220030505

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The influence of forces on the particles other than the applied cross flow is studied in hollow fiber flow field-flow fractionation (HF5). Such forces can be of either attractive or repelling in nature. It is shown by injecting polystyrene latex beads (0.091-mu-m in diameter) at different cross flows and by using eluents with different ionic strengths, that there will be disturbances in the concentration profile of the sample irrespective of the type of interacting forces. The retention time and peak broadening were either increased or decreased compared to the theoretical value, depending on the nature of the dominating interaction force. It is, nevertheless, possible to minimize the total interaction energy between particles and between the particles and the channel wall by choosing a suitable ionic strength.

引用

页码：411 / 416

页数：6

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