Cathodic stripping voltammetric behaviour of copper complexes of glycylgylcyl-l-histidine at a hanging mercury drop electrode: Determination of trace amounts of glycylglycyl-l-histidine
✍ Scribed by Arnold G. Fogg; F. Nil Ertas; Josino C. Moreira; Jiri Barek
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 881 KB
- Volume
- 278
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
The behaviour 6f copper complexes with glycylglycyl+histidine (GGI-I) was investigated using cyclic voltammetry and adsorptive differential pulse cathodic stripping voltammetry. The nature of the observed cathodic and anodic peaks was established and optimum conditions have been found for the determination of nanomolar levels of GGH by means of differential pulse cathodic stripping voltammetry after accumulation in the presence of excess copper at -0.20 V vs. Ag-AgCl reference electrode and using the stripping peak around -0.40 V which corresponds to the reduction of the copper(I)-GGH complex.