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Fiber-optic microsensor for high resolution pCO₂ sensing in marine environment

DOI to cite this document:
10.5283/epub.21067
Neurauter, Gerhard ; Klimant, Ingo ; Wolfbeis, Otto S.
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Date of publication of this fulltext: 06 Jun 2011 13:02


Abstract

A fast responding fiber-optic microsensor for sensing pCO(2) in marine sediments with high spatial resolution is presented. The tip diameter varies typically between 20 and 50 mu m. In order to make the pi-I-indicator 8-hydroxypyrene-1,3,6-trisulfonate soluble in the ethyl cellulose matrix, it was lipophilized with tetraoctylammonium as the counterion [HPTS-(TOA)(4)]. The microsensor was tuned to ...

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