A MICROELECTRODE FLOW AMPEROMETRIC DETECTOR FOR WATER-SOLUBLE POLYMERS

被引：0

作者：

VICENTEBECKETT, VA ^{[1
]}

LIU, MK ^{[1
]}

GIDDINGS, JC ^{[1
]}

PONS, S ^{[1
]}

MYERS, MN ^{[1
]}

机构：

[1] UNIV UTAH,DEPT CHEM,SALT LAKE CITY,UT 84112

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 298卷 / 02期

关键词：

AMPEROMETRY; FLOW SYSTEM; POLYMERS; WATER SOLUBLE POLYMERS;

D O I：

10.1016/0003-2670(94)00268-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A single electrode assembly, consisting of a platinum wire (20- or 25-mu m diameter) microelectrode and a palladium coating (as auxiliary/pseudo-reference electrode) on the glass tubing housing the microelectrode, has been utilized as a flow amperometric sensor for water-soluble polymers. An ordinary 3-V dry cell was used as voltage source. Amounts of injected polymer were in the range 0.01-260 mu g. The detector performance was superior to that of a differential refractive index detector in terms of limits of detection (sub-mu g levels of polymer), baseline stability, and reproducibility of analytical signal.

引用

页码：259 / 266

页数：8

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