Polyaniline-modified pH electrodes

Authors

Ma. Leonora Clerigo ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Richard J. C. Doria ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Jul Kristian R. Manoop ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Maricon R. Amada ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños
Elmer-Rico E. Mojica ⋅ PH Institute of Chemistry, University of the Philippines Los Baños

Abstract

Polyaniline-modified pencil pH electrodes were produced with the use of an ordinary pencil lead. Polyaniline was coated on the pencil lead surface through the electrochemical method polymerization. The potential relationship of the electrode with pH was considered using buffers of different pH values (acidic, neutral and basic). The potential measurements obtained were due to the surface charge density brought by the protonation and deprotonation in the acidic and basic mediums, respectively. Potential curves were then obtained. The polyaniline-modified pencil pH electrode offers the advantage of durability and lower cost compared to that of commercially available pH electrode.

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Issue

2005: Proceedings of the 23rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2005-PB-49

Section

Poster Session PB

Published

2005-10-26

How to Cite

[1]

ML Clerigo, RJC Doria, JKR Manoop, MR Amada, and E-RE Mojica, Polyaniline-modified pH electrodes, Proceedings of the Samahang Pisika ng Pilipinas 23, SPP-2005-PB-49 (2005). URL: https://proceedings.spp-online.org/article/view/SPP-2005-PB-49.