Fresenius' Journal of Analytical Chemistry

, Volume 343, Issue 12, pp 905–906 | Cite as

Determination of zinc in lubricating oil by polarography of emulsified samples

  • J. García-Antón
  • R. Grima
Short Communications

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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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • J. García-Antón
    • 1
  • R. Grima
    • 1
  1. 1.Departamento Ingeniería Química y Nuclear E.T.S.I. IndustrialesUniversidad Politécnica de ValenciaValenciaSpain

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