Method of detecting naphthylamines in mineral oils

Details Method of detecting naphthylamines in mineral oils Method of detecting naphthylamines in mineral oils

G - Physics

01

N

G01N 31/22 (2006.01) C10L 1/00 (2006.01) C10L 1/22 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2170742

A method for detecting naphthylamines which are present as tracers in mineral oils, wherein the naphthylamine is extracted by treating the mineral oil with an aqueous medium, and is coupled in the aqueous phase with a diazonium salt to form an azo dye, the use of specific naphthylamines as tracers in mineral oils and mineral oils containing these specific naphthylamines.

L'invention concerne un procédé permettant de détecter la présence dans des huiles minérales de naphthylamines qui y sont contenues en tant que traceurs. La naphthylamine est extraite par traitement de l'huile minérale avec une substance aqueuse et est couplée dans la phase aqueuse à un sel de diazonium afin de former un colorant azoïque. L'invention concerne en outre l'utilisation de naphthylamines spéciales comme traceurs pour des huiles minérales, ainsi que des huiles minérales qui en contiennent.

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