Sicpa Holding Sa

Juan Lopez Gejo

Thomas Tiller

Daniel Riebe

Toralf Beitz

Ünige Laskay

Martin Zühlke

The present invention provides a method for determining the authenticity of a petroleum hydrocarbon allegedly comprising at least one specific chemical marker, as well as a method for determining adulteration of a petroleum hydrocarbon marked with at least one specific chemical marker. The methods claimed and described herein rely upon the use of specific chemical markers in combination with laser ionization at a wavelength of between about 300 nm and about 370 nm coupled with ion mobility spectrometry or with mass spectrometry.

Method for determining authenticity and adulteration of marked petroleum hydrocarbons

The present invention relates to a method of marking a petroleum hydrocarbon by adding to and uniformly mixing with said petroleum hydrocarbon a chemical marker of general formula (I) wherein two of the residues R-Rare independently of each other selected from C-C-alkoxy, and eight of the residues R-Rare independently of each other selected from the group consisting of hydrogen and C-C-alkyl, as well as to a composition of a petroleum hydrocarbon comprising a petroleum hydrocarbon and at least one chemical marker of general formula (I). The presence and concentration of the chemical marker of general formula (I) in the composition of the petroleum hydrocarbon can be advantageously determined by laser ionization coupled with mass spectrometry or by laser ionization coupled with ion mobility spectrometry.

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Lausanne, Switzerland

Juan Lopez Gejo