Amperometric Sensing of Ethylene Oxide in the Gas Phase

• Published in: Analytical chemistry (Washington) Vol. 72; no. 10; pp. 2206 - 2210
• Main Authors: Hodgson, Alexia W. E, Jacquinot, Patrick, Hauser, Peter C
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 15.05.2000
• Subjects: Analytical chemistry; Carcinogens - analysis; Chemistry; Ethylene Oxide - analysis; Exact sciences and technology; Gases; General, instrumentation; Oxygen; Water; Performance evaluation; Membrane electrode; Porous electrode; Three membered ring; Polymer solid electrolyte; Volatile organic compound; Chemical sensor; Oxygen heterocycle; Electrochemical characteristic; Electrochemical detector; Ion exchange membrane; Ethylene oxide; Gas detector; Electrode potential

The sensing device used is based on a porous Pt electrode, which is supported on an ion-exchange membrane and directly exposed to the gas phase. Under acid conditions, ethylene oxide was found to be oxidized on the platinum oxide surface at +550 mV vs MSE, thus enabling its monitoring via the measur...