NEUTRAL CARRIER SODIUM ION-SELECTIVE MICROELECTRODE FOR EXTRACELLULAR STUDIES

被引：20

作者：

AMMANN, D ^{[1
]}

ANKER, P ^{[1
]}

机构：

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

来源：

NEUROSCIENCE LETTERS | 1985年 / 57卷 / 03期

关键词：

D O I：

10.1016/0304-3940(85)90503-8

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

A Na+-selective microelectrode based on a synthetic neutral carrier (ETH 157) is described. The selectivities in respect to K+, Ca2+ and Mg2+ are adequate for extracellular measurements of Na+ activities [in frog and drone]. Microelectrodes with tip diameters of .apprx. 0.7 .mu.m have an electrical resistance of 3 .times. 1010 .OMEGA. and a 90% response time of .ltoreq. 3 s. The drift of the potential difference of the Na+ microelectrode cell assembly in aqueous extracellular electrolyte solutions is .ltoreq. 0.2 mV/3 h.

引用

页码：267 / 271

页数：5

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