Method for marking liquids with at least two marker substances and method for detecting them

The present invention relates to a method of marking liquids using at least two markers, wherein said markers absorb in the 600-1200 nm region of the spectrum and reemit fluorescent light and the absorption range of at least one marker overlaps with the absorption range of at least one other marker....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHRISTOS VAMVAKARIS, KARIN HEIDRUN BECK, GERHARD WAGENBLAST, FRANK MEYER
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIQUEFIED PETROLEUM GAS LUBRICANTS MEASURING METALLURGY NATURAL GAS PEAT PETROLEUM, GAS OR COKE INDUSTRIES PHYSICS SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TESTING
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Beschreibung
Zusammenfassung:	The present invention relates to a method of marking liquids using at least two markers, wherein said markers absorb in the 600-1200 nm region of the spectrum and reemit fluorescent light and the absorption range of at least one marker overlaps with the absorption range of at least one other marker.The present invention further relates to a method for detecting markers in liquids marked by the method of the invention, which comprises using light sources which emit radiation in the absorption ranges of said markers and detecting the fluorescent light reemitted by said markers, at least one of said light sources emitting radiation in the overlapping absorption range of at least one marker with that of at least one other marker and the number of light sources being less than or equal to the number of markers.The present invention further relates to liquids marked by the method of the invention.