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What are the chemical methods used in the analysis of lubricants?
Wiki User
∙ 11y ago
Tests on lubricating oils can be broadly divided into chemical and physical tests ;
Physical Tests include :
Density
Viscosity
Colour (Appearance)
Flash Point
Lubricity
Wear tests (eg 4 Ball, Timken, etc)
Chemical Tests include :
Estimation of additive levels - eg metals (typ Zn, Ca, Mg, Na and wear metals) by AAS or ICP or quantitative FTIR, phosphorous, sulphated ash
Total Acid and Total Base number by titration
Water Content by distillation, titration or quantitative IR/FTIR
Copper Strip / Silver Strip test (used to determine corrosivity)
Determination of aromaticity by chromatography (GC / GCMS)
For a more complete list try the ASTM guidelines for analysis of petroleum products.
Wiki User
∙ 11y ago
Chemical methods used in the analysis of lubricants typically involve characterization of the base oil and additives present. These methods include Fourier transform infrared spectroscopy (FTIR), gas chromatography (GC), elemental analysis, and viscosity measurements. FTIR provides information about functional groups present, GC allows for separation and quantification of different components, elemental analysis determines the presence of specific elements, and viscosity measurements indicate the lubricant's flow properties.
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