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Title: 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 A
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 = {1991},
month = {10}
}