Method for detecting toxic gases
Abstract
A method is disclosed which is capable of detecting low concentrations of a pollutant or other component in air or other gas. This method utilizes a combination of a heating filament having a catalytic surface of a noble metal for exposure to the gas and producing a derivative chemical product from the component. An electrochemical sensor responds to the derivative chemical product for providing a signal indicative of the product. At concentrations in the order of about 1-100 ppm of tetrachloroethylene, neither the heating filament nor the electrochemical sensor is individually capable of sensing the pollutant. In the combination, the heating filament converts the benzyl chloride to one or more derivative chemical products which may be detected by the electrochemical sensor. 6 figures.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7173324
- Patent Number(s):
- 5055266
- Application Number:
- PPN: US 7-499202
- Assignee:
- ARCH Development Corporation, Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 23 Mar 1990
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; AIR POLLUTION MONITORS; DESIGN; CHLORINATED ALIPHATIC HYDROCARBONS; AIR POLLUTION MONITORING; PERFORMANCE; HALOGENATED ALIPHATIC HYDROCARBONS; MEASURING INSTRUMENTS; MONITORING; MONITORS; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)
Citation Formats
Stetter, J R, Zaromb, S, and Findlay, Jr, M W. Method for detecting toxic gases. United States: N. p., 1991.
Web.
Stetter, J R, Zaromb, S, & Findlay, Jr, M W. Method for detecting toxic gases. United States.
Stetter, J R, Zaromb, S, and Findlay, Jr, M W. Tue .
"Method for detecting toxic gases". United States.
@article{osti_7173324,
title = {Method for detecting toxic gases},
author = {Stetter, J R and Zaromb, S and Findlay, Jr, M W},
abstractNote = {A method is disclosed which is capable of detecting low concentrations of a pollutant or other component in air or other gas. This method utilizes a combination of a heating filament having a catalytic surface of a noble metal for exposure to the gas and producing a derivative chemical product from the component. An electrochemical sensor responds to the derivative chemical product for providing a signal indicative of the product. At concentrations in the order of about 1-100 ppm of tetrachloroethylene, neither the heating filament nor the electrochemical sensor is individually capable of sensing the pollutant. In the combination, the heating filament converts the benzyl chloride to one or more derivative chemical products which may be detected by the electrochemical sensor. 6 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 08 00:00:00 EDT 1991},
month = {Tue Oct 08 00:00:00 EDT 1991}
}