Characterization of a reservoir-type capillary optical microsensor for pCO2 measurements

DOI to cite this document:: 10.5283/epub.20834

Ertekin, Kadriye ; Klimant, Ingo ; Neurauter, Gerhard ; Wolfbeis, Otto S.

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

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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 ...