Determination of zinc in lubricating oil by polarography of emulsified samples |
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| Authors: | J. García-Antón and R. Grima |
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| Affiliation: | (1) Departamento Ingeniería Química y Nuclear E.T.S.I. Industriales, Universidad Politécnica de Valencia, P.O. Box 22012, E-46071 Valencia, Spain |
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| Abstract: | Summary A new polarographic determination of zinc in lubricating oils is based on the formation of an oil/toluene-water emulsion and bubbling nitrogen through the emulsion. A well developed peak appears at –1440 mV. The precision is ±3% for a sample with 382 mg Zn/kg. |
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