Chemical sensing of amine antioxidants in turbine lubricants

Abstract

A chemically modified microelectrode has been developed for the determination of amine antioxidants in turbine lubricants. The electrochemical probe is coated with a thin film of conducting poly(ethylene oxide), which, when placed into a lubricant environment, results in the extraction of the electroactive species into the polymer. Cyclic voltammetric experiments have been performed and an ability to measure the phenyl-α-napthylamine additive quantitatively has been demonstrated.