Deuterium-Substituted Fuel Markers for Anti-Tampering Detection

The patent changes the molecular structure parameter of the marker by substituting deuterium atoms for hydrogen atoms in hydrocarbon molecules. This isotopic substitution maintains the chemical properties and detection capability of the marker while significantly improving its resistance to removal by physical and chemical methods, as the deuterium-substituted molecules have different physical properties (higher molecular weight, different boiling points) that make them harder to separate or remove from the oil product.

The patent replaces conventional detection methods with advanced analytical techniques. Instead of using simple visual or basic chemical detection methods, the invention employs Nuclear Magnetic Resonance (NMR) spectroscopy or Gas Chromatography-Mass Spectrometry (GC-MS) to detect the deuterium-substituted markers. These methods provide highly specific and sensitive detection capabilities that can distinguish deuterium-substituted molecules from normal hydrocarbons, ensuring reliable detection despite the increased equipment complexity.