Effect of bevelling on C1-selective microelectrodes: experimental and model study.

O C Ikonomov; N C Vrabchev; A G Stoynev

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PubMed · 3245461

Effect of bevelling on C1-selective microelectrodes: experimental and model study.

O C Ikonomov·N C Vrabchev·A G Stoynev

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Abstract

Bevelling of the ultra-fine tips of C1-selective microelectrodes (ME) based on liquid ion-exchanger Corning 477913 caused significant decrease in ME resistivity, increase in sensitivity dependent on its initial value and decrease in selectivity constant for bicarbonates (KC1,HCO3) from 10:1 to approximately 8:1. Bevelling did not affect KC1,NO3 which had value below 1 due to higher selectivity of the ion-exchanger for nitrates. The observed experimental alterations in ME behavior after bevelling were in agreement with those predicted by a relatively simple electrical model comprising of two conductive pathways in parallel having opposite in sign sensitivities.

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Chlorides Hydrogen-Ion Concentration Microelectrodes Models, Biological Journal Article

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O C Ikonomov, N C Vrabchev, A G Stoynev. 1988. Effect of bevelling on C1-selective microelectrodes: experimental and model study.. https://pubmed.ncbi.nlm.nih.gov/3245461/

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