IP 469: Determination of saturated, aromatic and polar compounds in petroleum products by thin layer chromatography and flame ionization detection

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  • Method adopted/last revised: 2001
  • Method reapproved: 2006
  • REF/ISBN: IP469-2934869
  • Status: Current
  • First printed in STM books: January 2006

Scope

This standard specifies a procedure for the determination of saturated, aromatic and polar compounds in petroleum products and feedstocks having an atmospheric boiling point of 300 °C minimum at 5 % recovered sample. The standard classifies the output into four compound-types designated as saturates, aromatics, polars (I) and polars (II) and quantifies these. The test method is applicable to both distillate products and feedstocks and those containing residues from processing. A broad chemical compound type breakdown is increasingly being sought as a precursor to more detailed analysis for environmental considerations.

NOTE 1 Product/feedstock types that are typical of the applicable range of this standard include vacuum gas oils, lubricating oil base stocks, aromatic extracts (process oils), residual fuels, feedstocks and components from both atmospheric and vacuum processing, and bitumen.

This standard is based on the availability of a single commercial instrument, the latroscan TLC/FID AnalyzerTM, but does not preclude other instruments that can be demonstrated to give the same compound-type breakdown with equal or better precision and accuracy. The quoted precision was obtained only on this one instrument type.

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