公开(公告)号：AU7912491A

公开(公告)日：1992-01-02

申请号：AU7912491

申请日：1991-06-19

Applicant: UNIVERSITY OF DAYTON THE

Inventor： KAUFFMAN ROBERT E

IPC: G01N27/06 ,  G01N27/48 ,  G01N33/03 ,  G01N33/28 ,  G01N33/30 ,  G01N27/30 ,  G01N27/416

Abstract: A method and apparatus is disclosed for the complete analysis of used oils, lubricants, and fluids. The method can monitor antioxidant depletion, oxidation initiators buildup, product buildup, or liquid contamination or combinations thereof. The method can be performed either on-line or off-line but is preferably an on-line system, either a built-in system or a dip-stick type system, having a working microelectrode, a reference electrode, and an auxiliary electrode. A sample is contacted by the electrodes and subjected to cyclic voltammetric analysis, whereby a varying electric current is produced within the sample. The current is measured and recorded, and the conductance is measured. The remaining useful life of the oil, lubricant, or fluid is then determined from the wave heights of the oxidation and reduction peaks, and the contamination is determined from the conductance.

公开(公告)号：AU1696695A

公开(公告)日：1995-08-15

申请号：AU1696695

申请日：1995-01-30

Applicant: UNIVERSITY OF DAYTON THE

Inventor： KAUFFMAN ROBERT E ,  WOLF JAMES DOUGLAS

IPC: F02B3/06 ,  F02B47/00 ,  G01N27/48

Abstract: A method for the analysis of peroxide in hydrocarbon fuels such as jet fuels, diesel fuel, kerosene and gasoline is disclosed which can be performed both at remote locations as well as in a laboratory setting. A sample of the fuel to be tested is mixed with a solution containing a water-soluble salt and aqueous iodide solution to reduce the peroxide and produce free iodine. The sample is then subjected to a single sweep voltammetric analysis to measure the current through the sample as a function of the potential applied. The resulting peak of current on a current-potential plot can then be used to determine the amount of peroxide in solution.