Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For nitrogen or nitrogen containing compound
Patent
1994-06-21
1996-05-21
Bell, Bruce F.
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For nitrogen or nitrogen containing compound
204415, 204418, 204412, 324 711, 324439, 422 681, 422 8201, 422 8202, 422 8203, 2057825, 205793, G01N 2726
Patent
active
055185908
ABSTRACT:
A sensitive and rapid electrochemical sensor monitors motor oil deterioration, particularly antioxidation property, by determining the antioxidant and antiwear agent level remaining in an oil formulation. The electrochemical sensor is a two- or three-electrode electrochemical cell having a conductive electrolyte liquid or gel-like interphase over the electrode surfaces. The degree of deterioration of a motor oil in service is monitored by measurements of antioxidation or antiwear capacity of the oil. The electrochemical sensor can be used for monitoring other lubricants and hydrocarbons which contain electroactive additives. The electrochemical sensor allows measurements to be performed in-situ, without any chemical or physical pretreatment of the oil.
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"Chemical Sensing of Amine Antioxidants in Turbine Lubricants", Richard Price et al., Analyst, Nov. 1991, vol. 116.
Bell Bruce F.
Pennzoil Products Company
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