Renewable-reagent fiber optic sensor for ocean pCO2

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Abstract

A renewable-reagent fiber optic chemical sensor has been developed for measuring the partial pressure of carbon dioxide in ocean waters. A colorimetric pH indicator is delivered at a controlled flow rate through capillary tubing to the fiber tips. The fibers measure the color changes induced by CO2 diffusion across a gas-permeable silicone membrane. Multi- wavelength detection is used to correct for system drift. Factors affecting the sensitivity and stability of the response are discussed.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages60-66
Number of pages7
ISBN (Print)0819407186
StatePublished - 1992
EventChemical, Biochemical, and Environmental Fiber Sensors III - Boston, MA, USA
Duration: Sep 4 1991Sep 5 1991

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1587
ISSN (Print)0277-786X

Conference

ConferenceChemical, Biochemical, and Environmental Fiber Sensors III
CityBoston, MA, USA
Period09/4/9109/5/91

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