Issue 12, 1990
From the journal:

Analyst

Modification of electrodes with adsorbed polyamino acids. Part 1. Cathodic stripping voltammetric determination of copper(II) at a hanging mercury drop electrode using adsorptive accumulation on an adsorbed layer of poly-L-histidine

Josino C. Moreira,   Rui Zhao  and  Arnold G. Fogg  

Abstract

The application of a hanging mercury drop electrode, modified by adsorption of poly-L-histidine, to the determination of CuII in aqueous solutions has been studied. Selective and rapid pre-concentration of CuII on the poly-L-histidine film was observed, even from dilute and quiescent solutions. Copper(II) was determined by differential-pulse adsorptive stripping voltammetry between 5 × 10–9 and 4 × 10–7M after a 2-min accumulation time, using the reduction peak of its complex, at –0.4 V versus an Ag-AgCl reference electrode, obtained in acetate buffer solution of pH 4.5. No significant interference was observed from 1 × 10–6M levels of ethylenediaminetetraacetic acid, chromium(III), lead(II), nickel(II), cadmium(II) and manganese(II).

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Article information

DOI
https://doi.org/10.1039/AN9901501561
Article type
Paper

Analyst, 1990,115, 1561-1564

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Modification of electrodes with adsorbed polyamino acids. Part 1. Cathodic stripping voltammetric determination of copper(II) at a hanging mercury drop electrode using adsorptive accumulation on an adsorbed layer of poly-L-histidine

J. C. Moreira, R. Zhao and A. G. Fogg, Analyst, 1990, 115, 1561 DOI: 10.1039/AN9901501561

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