The production of electrochromatography capillary columns using gas pressure powered dry-packing method

被引：5

作者：

Zhang, CQ ^{[1
]}

Zhu, CF ^{[1
]}

Lin, XL ^{[1
]}

Wei, YH ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem, Jinan 250061, Peoples R China

来源：

ANALYTICAL LETTERS | 2003年 / 36卷 / 07期

关键词：

electrochromatography; dry-packing capillary columns; air bubbles;

D O I：

10.1081/AL-120021096

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper introduces a dry-packing method of producing packed capillaries for using in capillary electrochromatography (CEC) or microbore HPLC. Several C-18 packing materials with different particle size are studied. We compared the two methods of dry-packing and slurry-packing. The former yields analogous or better efficiency with a simpler apparatus using a shorter packing time. Besides, the columns are very stable and no loss in efficiency was found after using a column continuously for over one month. By experiments, we found that air bubbles easily occurred in columns whose inlet frit was fabricated by gluing particles differing from the packing particles. No air bubbles were generated with frits prepared by locally sintering a narrow band of the reversed-phase packing by means of a heating filament, while flushing the column with water.

引用

页码：1411 / 1421

页数：11

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