The effect of polymeric supports and methods of immobilization on the performance of an optical copper(II)-sensitive membrane based on the colourimetric reagent Zincon

DOI to cite this document:: 10.5283/epub.20836

Oehme, Ines ; Prattes, Susanne ; Wolfbeis, Otto S. ; Mohr, Gerhard J.

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Date of publication of this fulltext: 20 May 2011 06:30

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Abstract

A reservoir type of capillary microsensor for pCO(2) measurements is presented. The sensor is based on the measurement of the fluorescence intensity of the anionic form of the pH indicator 1-hydroxy-3,6,8-pyrenetrisulfonate in the form of its ion pair with a quaternary ammonium base in an ethyl cellulose matrix. The glass capillary containing the reservoir sensor was prepared by immersing the tip ...