TUBULAR POTENTIOMETRIC DETECTOR FOR FLOW-INJECTION BASED ON HOMOGENEOUS CRYSTALLINE MEMBRANES SENSITIVE TO COPPER, CADMIUM AND LEAD

被引：21

作者：

FERREIRA, IMPLVO ^{[1
]}

LIMA, JLFC ^{[1
]}

机构：

[1] UNIV PORTO, FAC FARM, DEPT QUIM FIS, P-4000 OPORTO, PORTUGAL

来源：

ANALYST | 1994年 / 119卷 / 02期

关键词：

TUBULAR ELECTRODE; FLOW INJECTION; COPPER; CADMIUM; LEAD;

D O I：

10.1039/an9941900209

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Copper, cadmium and read potentiometric tubular detectors, based on homogeneous crystalline membranes obtained by high-pressure pressing of XS-Ag2S mixtures (X = Cu, Cd or Pb), were prepared and tested. Response characteristics (linear response range, limit of detection, stability and time of response, pH range and potentiometric selectivity coefficients) were established and compared with those of conventionally shaped electrodes prepared with the same membranes. The standards of performance of the tubular potentiometric detectors when used in low-dispersion manifolds were found to be similar to those of the corresponding conventional electrodes in batch conditions.

引用

页码：209 / 212

页数：4

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