IP 560: Determination of silicon, chromium, nickel, iron and copper in used greases - Wavelength dispersive X-ray fluorescence spectroscopy method

Document options


EI Technical Partners get free access to publications. You will need to Login or Register here

  • Method adopted/last revised: 2008
  • Method reapproved: None
  • REF/ISBN: IP560-2936450
  • Status: Current
  • First printed in STM books: January 2008
  • -->

Scope

This Standard specifies a procedure for the determination of the silicon, nickel, chromium, iron and copper content of used lubricating greases by wavelength dispersive X-ray fluorescence spectrometry. The concentration ranges that this method covers are:

Element        Range mg/kg

Silicon            1 to 220
Nickel             1 to 220
Chromium      1 to 180
Iron                10 to 3500
Copper           1 to 155

NOTE 1 - This standard is suitable for the condition monitoring of machinery by the analysis of the wear metals in the lubricating grease. This standard is designed for trend analysis of the elements listed. The precision shown for each element obtained from a round robin study is supplied to provide indicative performance on repeatability and reproducibility. Due to the inhomogeneous nature of the samples a high variance can be expected thus individual measurements should not be used in isolation but as a measure of trend.

NOTE 2 - Results obtained from ICP-OES determinations of the same round robin samples indicated that XRF measurements produced higher results for all elements except Fe where the results were comparable.

Members Benefits

Are you an EI Member? If yes, register/log in now to ensure you receive free access or discounts to EI publications.

If you are not a Member, why not join today and receive all of the benefits of EI Membership? EI Members are entitled to a 25% discount on most EI publications.