NEUTRAL CARRIER BASED CA-2+-SELECTIVE ELECTRODE WITH DETECTION LIMIT IN THE SUB-NANOMOLAR RANGE

被引：201

作者：

SCHEFER, U ^{[1
]}

AMMANN, D ^{[1
]}

PRETSCH, E ^{[1
]}

OESCH, U ^{[1
]}

SIMON, W ^{[1
]}

机构：

[1] SWISS FED INST TECHNOL,DEPT ORGAN CHEM,UNIV STR 16,CH-8092 ZURICH,SWITZERLAND

来源：

ANALYTICAL CHEMISTRY | 1986年 / 58卷 / 11期

关键词：

MEMBRANES; -; OXYGEN; SENSORS;

D O I：

10.1021/ac00124a036

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In a 1:3 cation/llgand complex the ionophore N,N,N prime ,N prime -tetracyclohexyl-3-oxapentanediamide forms an almost ideal coordination sphere of nine oxygen atoms for the uptake of Ca**2** plus . By use of this ionophore and current membrane technology, solvent polymeric membranes with extremely high Ca**2** plus selectivities are obtained. Na** plus and K** plus are rejected by a factor of 10**7**. **4 and 10**8, respectively, and the detection limit of the Ca**2 plus electrode response function in an intracellular ion background is at about 100 pM Ca**2** plus .

引用

页码：2282 / 2285

页数：4

共 29 条

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