| abstract |
The present invention provides a method of marking a hydrocarbon by adding one or more first markers, further comprising adding to the hydrocarbon one or more second markers that cannot be completely removed from the hydrocarbon under the conditions of removal of the first marker (s). To provide a way.n n n In addition, the present invention provides a solution comprising a hydrocarbon marked by such a method, and at least one first marker and at least one second marker as defined in the method of the present invention, and also additional additives for marking the hydrocarbon if necessary. To provide. |