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Optical sensors for carbon dioxide: an overview of sensing strategies past and present

Mills, A. and Eaton, K. (2000) Optical sensors for carbon dioxide: an overview of sensing strategies past and present. Quimica Analitica, 19 (Supplement 1). pp. 75-86. ISSN 0212-0569

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Abstract

The evolution of the optical sensor for CO2 over the past two decades is outlined and illustrated through examples of luminescent-based sensors. The basic principles and design of the early 'wet covered' type sensor, in which a pH sensitive dye in an aqueous buffer is covered by a gas permeable, ion impermeable, membrane, are outlined. The gradual move from the 'wet covered' types of CO2 optical sensor to 'solid-water droplet' type sensors and then onto 'solid' sensors is charted. The basic design and principles of operation of the modern 'solid' optical sensor for P-CO2 is covered in some detail. Other sensing strategies outside the simple use of pH-sensitive dyes are also considered, most notably those based on luminescence lifetime measurements.

Item type: Article
ID code: 416
Keywords: carbon dioxide, sensor, optode, luminescense, Chemistry
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
    Depositing user: Mr Derek Boyle
    Date Deposited: 10 Mar 2006
    Last modified: 12 Mar 2012 10:35
    URI: http://strathprints.strath.ac.uk/id/eprint/416

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