Development of the rotation mixing technology for approaching to plug-flow in a FIA reaction tube

被引：0

作者：

Hirakawa, K ^{[1
]}

Nishida, M ^{[1
]}

Yoshida, I ^{[1
]}

Ishii, D ^{[1
]}

机构：

[1] Kumamoto Inst Technol, Grad Sch, Div Appl Chem, Kumamoto 8600082, Japan

来源：

BUNSEKI KAGAKU | 1998年 / 47卷 / 07期

关键词：

the axis of rotation; plug flow; diffusion control; FIA;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The new technology for approaching plug flow in a flow-injection analysis was developed. For that purpose, a flexible fused silica capillary of 0.35 mm outer diameter as the axis of rotation, for example, was inserted into a whole reaction tube of 1.0 mm inner diameter, 100 cm length. The obtained FIA signal was improved to be a symmetrical, such as a Gauss curve. A plug containing the sample and reagents was mixed only in the direction of the radius, and did not mix in the direction of the stream. The diffusion of the injected solute was controlled in the reaction tube. The mixed stream in the reaction tube was changed into plug flow due to the effect of the axis of rotation. This method was also applied to teflon tubing of 0.5 mm inner diameter, 100 cm length used in a normal FIA system. This new technology was also demonstrated for the FIA reaction of iron(III) with acidic KSCN.

引用

页码：411 / 415

页数：5