Fresenius' Journal of Analytical Chemistry

, Volume 347, Issue 10–11, pp 417–422 | Cite as

Kinetic study of the degradation of lubricating motor oil by liquid chromatography and photoacoustic spectrometry

  • Edward P. C. Lai
  • Robert S. Vucic
Original Papers Organic Materials


Lubricating motor oil samples were collected throughout one oil change period of 5000 km and analyzed for saturate, aromatic, polynuclear aromatic hydrocarbon (PAH) and polar species using normal-phase high-performance liquid chromatography (HPLC) with ultraviolet light absorption and refractive index detections. The oil samples were also analyzed using a new photoacoustic spectrometry (PAS) method. Fair correlation was established between the HPLC method and the PAS method for determining aromatic concentration. Moreover, the PAS method offers shorter analysis time, comparable reproducibility, and improvement in detection sensitivity over the HPLC method. The analyses data obtained were used to study the degradation kinetics of the motor oil against mileage. The aromatic species were found to increase in concentration with pseudo zeroth-order kinetics, the PAH species rose from zero to some higher amount, whereas the saturate and the polar species remained essentially constant over the mileage period.


HPLC Method Refractive Index Detection Short Analysis Time Photoacoustic Spectrometry Polynuclear Aromatic Hydrocarbon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Schilling A (1968) Motor oils and engine lubrication. Scientific, Shropshire, England, pp 1.1–1.6, 2.1–2.4Google Scholar
  2. 2.
    Ranny MW (1980) Synthetic oils and additives for lubricants. Noyes Data, New Jersey, pp 1, 3, 96, 229Google Scholar
  3. 3.
    Schobert HH (1990) The chemistry of hydrocarbon fuels. Butterworth, London, pp 85–94Google Scholar
  4. 4.
    ASTM Standard Test Method D1319 (1989) Hydrocarbon types in liquid petroleum products by fluorescent indicator absorption. ASTM, New York, pp 34–39Google Scholar
  5. 5.
    Petrov AA (1984) Petroleum hydrocarbons. Springer, Berlin Heidelberg New York, pp 65–67, 140–150, 212–220Google Scholar
  6. 6.
    Szakasits JJ, Robinson RE (1991) Anal Chem 63:114–120Google Scholar
  7. 7.
    Matsunaga A, Yagi M (1978) Anal Chem 50:753–756Google Scholar
  8. 8.
    Bollet C, Escalier JC (1981) J Chromatogr 206:289–300Google Scholar
  9. 9.
    Alfredson TV (1981) J Chromatogr 218:715–728Google Scholar
  10. 10.
    Miller R (1982) Anal Chem 54:1742–1746Google Scholar
  11. 11.
    Chmielowiec J (1983) Anal Chem 55:2367–2374Google Scholar
  12. 12.
    Pearson CD, Gharfeh SG (1986) Anal Chem 58:307–311Google Scholar
  13. 13.
    Oda S, Sawada T, Nomura M, Kamada H (1979) Anal Chem 51:686–688Google Scholar
  14. 14.
    Voigtman E, Jurgensen A, Winefordner J (1981) Anal Chem 53:1442–1446Google Scholar
  15. 15.
    Kitamori T, Suzuki K, Sawada T, Gohshi Y, Motojima K (1986) Anal Chem 58:2275–2278Google Scholar
  16. 16.
    Guo R, Chen NL, Lai EPC (1988) Analyst 113:595–598Google Scholar
  17. 17.
    Guo R, Chen NL, Silundika C, Lai EPC (1988) Analyst 113:1105–1108Google Scholar
  18. 18.
    Chen NL, Guo R, Lai EPC (1988) Anal Chem 60:2435–2439Google Scholar
  19. 19.
    VanderNoot VA, Lai EPC (1992) Anal Chem 64:3187–3190Google Scholar
  20. 20.
    Lai EPC, Statham BD, Ansell K (1993) Anal Chim Acta 276:393–399Google Scholar
  21. 21.
    Lai EPC, Giroux RD, Chen NL, Guo R (1993) Can J Chem 71:968–973Google Scholar
  22. 22.
    Rosencwaig A (1980) Photoacoustics and photoacoustic spectroscopy. Wiley, New YorkGoogle Scholar
  23. 23.
    Patel C, Tam A (1981) Rev Mod Phys 53:517–545Google Scholar
  24. 24.
    Brown RS, Taylor LT (1983) Anal Chem 55:723–730Google Scholar
  25. 25.
    Altget KH, Gouw TH (1979) Chromatography in petroleum analysis. Marcel Dekker, New York, pp 54–69Google Scholar
  26. 26.
    Perez-Bendito D, Siva M (1988) Kinetic methods in analytical chemistry. Ellis Horwood, New York, pp 13–30Google Scholar
  27. 27.
    Atkins PW (1986) Physical chemistry. Freeman, New York, pp 687–710Google Scholar
  28. 28.
    Kinghorn RRF (1983) An introduction to the physics and chemistry of petroleum. Wiley, New York, p 108Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Edward P. C. Lai
    • 1
  • Robert S. Vucic
    • 1
  1. 1.Centre for Analytical and Environmental Chemistry, Ottawa-Carleton Chemistry Institute, Department of ChemistryCarleton UniversityOttawaCanada

Personalised recommendations