A fibre optic evanescent wave sensor used for the detection of trace nitrites in water

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A fibre optic evanescent wave sensor used for the detection of trace nitrites in water

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dc.contributor.author Girijavallabhan, C P
dc.contributor.author Radhakrishnan, P
dc.contributor.author V P N Nampoori
dc.contributor.author Sivsankara Pillai, V N
dc.contributor.author Suresh Kumar, P
dc.date.accessioned 2010-07-12T08:07:09Z
dc.date.available 2010-07-12T08:07:09Z
dc.date.issued 2002-03-08
dc.identifier.citation International School of Photonics, Cochin University of Science and Technology en_US
dc.identifier.other J. Opt. A: Pure Appl. Opt. 4 (2002) 247–250
dc.identifier.other http://iopscience.iop.org/1464-4258/4/3/305
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/1767
dc.description.abstract A fibre optic technique for detecting trace amounts of nitrite compounds in water is described. The off-line fibre optic sensor outlined here is based on evanescent field absorption in a test solution formed by the reaction of nitrite compounds in water with suitable chemical reagents. A short unclad portion of a plastic clad silica fibre acts as the sensing region. The experimental results clearly establish the usefulness of the present technique for detecting very low concentrations of the order of 1 ppb (parts per billion) of nitrite compounds with a large dynamic range of 1–1000 ppb. Such a high sensitivity enables the present device to be used for measuring the nitrite content in drinking water. en_US
dc.language.iso en en_US
dc.publisher Journal of Optics A : Pure and Applied Optics en_US
dc.subject Optical fibre en_US
dc.subject Evanescent wave sensor en_US
dc.subject Pollution monitoring en_US
dc.subject fibre optic sensor en_US
dc.title A fibre optic evanescent wave sensor used for the detection of trace nitrites in water en_US
dc.type Working Paper en_US


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