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Title: Optical sensing elements for nitrogen dioxide (NO.sub.2) gas detection, a sol-gel method for making the sensing elements and fiber optic sensors incorporating nitrogen dioxide gas optical sensing elements

Abstract

A sensing element, a method of making a sensing element, and a fiber optic sensor incorporating the sensing element are described. The sensor can be used for the quantitative detection of NO.sub.2 in a mixture of gases. The sensing element can be made by incorporating a diazotizing reagent which reacts with nitrous ions to produce a diazo compound and a coupling reagent which couples with the diazo compound to produce an azo dye into a sol and allowing the sol to form an optically transparent gel. The sensing element changes color in the presence of NO.sub.2 gas. The temporal response of the absorption spectrum at various NO.sub.2 concentrations has also been recorded and analyzed. Sensors having different design configurations are described. The sensing element can detect NO.sub.2 gas at levels of parts per billion.

Inventors:
 [1];  [2]
  1. Mississippi State, MS
  2. Starkville, MS
Publication Date:
Research Org.:
Mississippi State University (Mississippi State, MS)
Sponsoring Org.:
USDOE
OSTI Identifier:
913244
Patent Number(s):
7,239,766
Application Number:
10/693,519
Assignee:
Mississippi State University (Mississippi State, MS)
DOE Contract Number:  
FC26-98FT40395
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Mechery, Shelly John, and Singh, Jagdish P. Optical sensing elements for nitrogen dioxide (NO.sub.2) gas detection, a sol-gel method for making the sensing elements and fiber optic sensors incorporating nitrogen dioxide gas optical sensing elements. United States: N. p., 2007. Web.
Mechery, Shelly John, & Singh, Jagdish P. Optical sensing elements for nitrogen dioxide (NO.sub.2) gas detection, a sol-gel method for making the sensing elements and fiber optic sensors incorporating nitrogen dioxide gas optical sensing elements. United States.
Mechery, Shelly John, and Singh, Jagdish P. Tue . "Optical sensing elements for nitrogen dioxide (NO.sub.2) gas detection, a sol-gel method for making the sensing elements and fiber optic sensors incorporating nitrogen dioxide gas optical sensing elements". United States. https://www.osti.gov/servlets/purl/913244.
@article{osti_913244,
title = {Optical sensing elements for nitrogen dioxide (NO.sub.2) gas detection, a sol-gel method for making the sensing elements and fiber optic sensors incorporating nitrogen dioxide gas optical sensing elements},
author = {Mechery, Shelly John and Singh, Jagdish P},
abstractNote = {A sensing element, a method of making a sensing element, and a fiber optic sensor incorporating the sensing element are described. The sensor can be used for the quantitative detection of NO.sub.2 in a mixture of gases. The sensing element can be made by incorporating a diazotizing reagent which reacts with nitrous ions to produce a diazo compound and a coupling reagent which couples with the diazo compound to produce an azo dye into a sol and allowing the sol to form an optically transparent gel. The sensing element changes color in the presence of NO.sub.2 gas. The temporal response of the absorption spectrum at various NO.sub.2 concentrations has also been recorded and analyzed. Sensors having different design configurations are described. The sensing element can detect NO.sub.2 gas at levels of parts per billion.},
doi = {},
url = {https://www.osti.gov/biblio/913244}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {7}
}

Patent:

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Works referenced in this record:

Self-calibrated fiber optic transflection probe for NO 2 detection
conference, March 2004

  • Mechery, Shelly John; Singh, Jagdish P.
  • Optical Technologies for Industrial, Environmental, and Biological Sensing, SPIE Proceedings
  • https://doi.org/10.1117/12.516204

Colorimetric Microdetermination of Nitrogen Dioxide in Atmosphere
journal, December 1954


Detection of Nitric Oxide and Nitrogen Dioxide with Photoluminescent Porous Silicon
journal, January 1996


Optical NO2 sensing based on sol–gel entrapped azobenzene dyes
journal, July 1999


Coloration reactions between NO2 and organic compounds in porous glass for cumulative gas sensor
journal, April 1998