| dc.contributor.author |
Sivasankara Pillai,V N |
|
| dc.contributor.author |
Radhakrishnan, P |
|
| dc.contributor.author |
Nampoori, V P N |
|
| dc.contributor.author |
Girijavallabhan, C P |
|
| dc.contributor.author |
Suresh, Kumar P |
|
| dc.date.accessioned |
2010-07-12T09:03:59Z |
|
| dc.date.available |
2010-07-12T09:03:59Z |
|
| dc.date.issued |
2002-03-08 |
|
| dc.identifier.citation |
School of Environmental Studies, Cochin University of Science and Technology |
en_US |
| dc.identifier.other |
J. Opt. A: Pure Appl. Opt. 4 (2002) 247–250 |
|
| dc.identifier.uri |
http://dyuthi.cusat.ac.in/purl/1770 |
|
| 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 |