Intracellular magnesium ion-selective microelectrode based on a neutral carrier
- 15 March 1989
- journal article
- research article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 61 (6) , 574-576
- https://doi.org/10.1021/ac00181a015
Abstract
A magnesium ion selective microelectrode based on a synthetic neutral carrier is presented. The selectivity of Mg2+ over Na+, K+, H+, and Ca2+ is sufficient for assays of intracellular magnesium ion activities. The microelectrodes with an optimized membrane composition have a resistance of about 5 .times. 1010 .OMEGA. and a 90% response time of .ltoreq. 3 s for a tip diameter around 1 .mu.m. The lifetime of the microelectrode cell assembly is longer than 1 week and the emf drift after equilibration is .ltoreq. 0.3 mV/h.This publication has 4 references indexed in Scilit:
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