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Application of polyethyleneimine-quinone modified electrodes for voltammetric measurements of pH
Authors:D. Mandler   A. Kaminski  I. Willner
Affiliation:

The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Abstract:A modified polymer, ie benzylated polyethyleneimine (PEI), coated on a glassy carbon electrode in which negatively charged quinones have been incorporated, has been used for voltammetric measurement of pH. A linear dependence of the average of the peak potentials as a function of pH was observed. The system has been successfully applied also to ultramicroelectrodes.
Keywords:pH electrode   voltammetry   polyethyleneimine   quinone   microelectrode
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