Electrochemical gas detection method

Patent · Tue Jun 18 04:00:00 EDT 1985

OSTI ID:6473297

Oswin, H G; Blurton, K F

An electrochemical cell comprising an anode, a cathode and a reference electrode operating in an aqueous electrolyte is utilized for detection of noxious gases in air. The gas is oxidized at the anode and detection thereof occurs as a result of the current generated by the reaction. A fixed potential difference is maintained between the anode and the reference electrode to avoid generation of undesired current from reactions involving an oxygen-water redox couple within the cell which would invalidate anode-cathode current for gas detection purposes. The fixed potential is chosen from within the range of about 0.9 to 1.5 volts.

• Assignee: Becton Dickinson and Company
• Patent Number(s): US RE 31914
• OSTI ID: 6473297
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORS
ANODES
AQUEOUS SOLUTIONS
CATHODES
DETECTION
DISPERSIONS
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
GAS ANALYSIS
GASEOUS WASTES
MEASURING INSTRUMENTS
MIXTURES
MONITORS
REDOX POTENTIAL
SOLUTIONS
WASTES