Electrochemical cell for the detection of noxious gases

Patent · Tue Nov 17 04:00:00 EST 1987

OSTI ID:5730564

Schneider, A A; Stewart, D A; Jolson, J D; Auel, R M; Price, J F

An electrochemical cell for quantitatively detecting ethylene oxide is described comprising: (a) a first working electrode comprising gas diffusion membrane having bonded thereto a catalytic portion electrochemically reactive with ethylene oxide; (b) a second working electrode having electrochemical activity with oxidation/reduction products produced at the first working electrode; (c) a counter electrode; (d) a reference electrode; (e) an electrolyte in contact with the catalytic portion of the first working electrode and in contact with the second working, counter and reference electrodes; (f) means for containing the electrolyte and the first and second working electrodes; (g) means for maintaining a fixed potential on the first working electrode relative to the reference electrode of from above 1.0 to about 1.8 volts with respect to the potential of the reversible hydrogen couple in the electrolyte of the cell; and (h) means for maintaining a fixed potential on the second working electrode relative to the reference electrode of from about 1.0 to 2.2 volts with respect to the potential of the reversible hydrogen couple in the electrolyte of the cell.

• Assignee: Mine Safety Appliances Co., Pittsburgh, PA
• Patent Number(s): US 4707242
• OSTI ID: 5730564
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALKENES
CHALCOGENIDES
CHEMISTRY
COUNTING TECHNIQUES
DESIGN
DETECTION
DIFFUSION
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ELEMENTS
ETHYLENE
GASEOUS DIFFUSION
HYDROCARBONS
HYDROGEN
MEASURING INSTRUMENTS
NONMETALS
ODOR
ODOROMETERS
ORGANIC COMPOUNDS
ORGANOLEPTIC PROPERTIES
OXIDES
OXYGEN COMPOUNDS