What is it about?
We focussed on searching the possibility to distinguish between rebated excise duty diesel oil and deliberately laundered. Authentic diesel oil samples, i.e., containing Solvent Yellow 124 and Solvent Red 19, and samples with removed excise duty components were analyzed using gas chromatography with nitrogen chemiluminescence detection. Obtained chromatograms were used as specific fingerprints. They were modeled using the discriminant partial least squares approach (PLS-DA) to reveal differences in the chemical composition observed before and after fuel laundering. PLS-DA models extended with variable selection and the Monte Carlo validation proved that it is possible to distinguish between authentic samples and counterfeited, as well as to point out the applied laundering scheme. This work received the financial support of the National Science Center, Poland (research grant no. 2014/13/B/ST4/05007).
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Why is it important?
Fuel laundering, i.e., deliberate removal of excise duty components, is a crime that seriously affects the economy. Therefore, the possibility to effectively confirm the authenticity of fuel products is of great importance, also from the legal perspective. Although excise duty components can be removed from fuel products, it is very likely that other markers can be detected and hopefully help to verify samples' authenticity.
Read the Original
This page is a summary of: Detecting chemical markers to uncover counterfeit rebated excise duty diesel oil, Talanta, November 2019, Elsevier, DOI: 10.1016/j.talanta.2019.05.113.
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