NITRATE ION-SELECTIVE ELECTRODE AS REFERENCE ELECTRODE FOR FLOW-INJECTION ANALYSIS

被引：5

作者：

ALONSOCHAMARRO, J

BARTROLI, J

JIMENEZ, C

机构：

[1] Facultat de Ciències, Unitat de Química Analítica, Department de Química, 08193 Bellaterra, Barcelona

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 261卷 / 1-2期

关键词：

FLOW SYSTEM; POTENTIOMETRY; ION-SELECTIVE ELECTRODES; ION-SENSITIVE FIELD-EFFECT TRANSISTORS; PH; NITRATE;

D O I：

10.1016/0003-2670(92)80222-S

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The development of a flow-injection system for pH determination using a pH ion-sensitive field-effect transistor in conjunction with a tubular flow-through nitrate ion-selective etectrode (ISE) as a reference electrode is described. With this system, the linear working range extends from pH 1 to 13 with a sensitivity of 56 mV per pH unit and a relative standard deviation of 0.4%. A stable baseline and good response are obtained by placing the tubular ISE in a closed branch of the main channel.

引用

页码：419 / 423

页数：5

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