Potentiometric differential microdetector with interchange solid membranes used in flow injection analysis

被引：4

作者：

Olenic, L

Hopirtean, E

Olenic, L

机构：

[1] Institute of Chemistry 'Raluca Ripan', 3400 Cluj-Napoca, Fîntînele str.

来源：

ANALYST | 1997年 / 122卷 / 02期

关键词：

flow injection analysis; ion-selective membranes for silver(I); copper(II) and sulfide; flow-through electrode; potentiometric differential microdetector;

D O I：

10.1039/a605410b

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The construction and characteristics of two potentiometric differential microdetectors equipped with two similar ion-selective membranes are described, The two membranes used were of Ag2S for Ag-I and S2- and CuS-Ag2S for Cu-II. The active volume of the measuring cell was about 3 mu l. Calibration plots were linear, with almost theoretical slopes, down to 10(-6) mol dm(-3) Ag-I, 5 x 10(-6) mol dm(-3) Cu-II and 10(-5) mol dm(-3) S2-. The throughput was 30-60 samples h(-1) depending on the sample. The errors in the determination of the above-mentioned ions were below 3.9%.

引用

页码：107 / 109

页数：3

共 15 条

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