Issue 10, 1991
From the journal:

Analyst

Determination of ethaverine and papaverine using ion-selective electrodes

Christian Eppelsheim,   Ralph Aubeck,   Norbert Hampp  and  Christoph Bräuchle  

Abstract

Ion-selective poly(vinyl chloride) membrane electrodes for the opium alkaloids papaverine and ethaverine are presented. The electrode membranes contain ion pairs of the alkaloids with the anionic counter ion tetraphenylborate. The detection limits for all electrodes were approximately 2 × 10–6 mol dm–3 at pH 5.0 in 100 mmol dm–3 buffered solutions and the measured slopes were close to the values theoretically expected. The selectivity coefficient observed for the ethaverine–tetraphenylborate electrode is 10–1.1 with respect to papaverine. The suitability of the membranes for single-use electrodes is discussed.

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Article information

DOI
https://doi.org/10.1039/AN9911601001
Article type
Paper

Analyst, 1991,116, 1001-1003

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Determination of ethaverine and papaverine using ion-selective electrodes

C. Eppelsheim, R. Aubeck, N. Hampp and C. Bräuchle, Analyst, 1991, 116, 1001 DOI: 10.1039/AN9911601001

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