Voltammetric determination of lead (II) ions at carbon paste electrode modified with banana tissue

Creator

Elmer Rico E. Mojica, University of the Philippines Los Banos
Joan M. Vidal, University of the Philippines Los Banos
Amado B. Pelegrina, University of the Philippines Los Banos
Jose Rene L. Micor, University of the Philippines Los Banos

Issue Date

9-2007

Abstract

Banana tissue contains materials with functional groups which have the ability to form complexes with metal ions. With this property, banana tissue was used as modifier of carbon paste electrode for voltammetric determination of lead ions in aqueous samples. The use of 0.01 M HCl as supporting electrolyte and 20% (w/w) modifier gave an optimum current response for lead (II) solution. Accumulation time of 6 min, accumulating solution of pH 5, deposition time of 300 sec and deposition potential of-1500 mV were found to give the best results in the analysis of lead (II). Multiple stripping of the used electrode successfully removed lead ions for the regeneration of the electrode. The banana modified carbon paste electrode exhibited a sensitivity of 2.81 μA/ppm and a limit of detection (LOD) of 0.10 mg L-1. © 2007 Asian Network for Scientific Information.

Source or Periodical Title

Journal of Applied Sciences

ISSN

18125654

Volume

7

Issue

9

Page

1286-1292

Document Type

Article

Language

English

Subject

Banana tissue, Carbon paste electrode, Lead, Modifier

Recommended Citation

Elmer-Rico E. Mojica, Joan M. Vidal, Amado B. Pelegrina and Jose Rene L. Micor, 2007. Voltammetric Determination of Lead (II) Ions at Carbon Paste Electrode Modified with Banana Tissue. Journal of Applied Sciences, 7: 1286-1292.

Identifier

DOI: 10.3923/jas.2007.1286.1292

Digital Copy

YES