Method and kit for detecting explosive substances containing...

G - Physics – 01 – N

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G01N 33/22 (2006.01) G01N 31/22 (2006.01)

Patent

CA 2559714

The invention relates to a method for detecting an explosive substance which contains chlorate, bromate and/or organic peroxide, wherein a suspect substance is contacted with a first reagent, which is a strongly acid solution of at least one primary or secondary aromatic amine, whereby chlorate or bromate type explosive affords a distinct coloration; and in the absence of such coloration, contacting the same sample (in contact with the first reagent) with a second reagent, which is a solution comprising cations of at least one transition metal, whereby the presence of organic peroxides in the sample, which has been hydrolyzed at least partly to hydrogen peroxide by the strong acid of the first reagent, affords a distinct coloration. The invention further relates to a kit containing separate first and second reagents; a container of mixed reagents for detecting peroxide; and a kit including such container.

La présente invention concerne un procédé de détection d'explosif au chlorate, bromate et/ou peroxyde organique. En l'occurrence, on met la substance suspecte en contact avec un premier réactif, en l'occurrence une solution fortement acide d'au moins une amine aromatique primaire ou secondaire, auquel cas l'explosif au chlorate ou au bromate prend une couleur particulière; et en l'absence d'une telle coloration, on met en contact le même échantillon (toujours en contact avec le premier réactif), avec un deuxième réactif, qui est une solution comprenant des cations d'au moins un métal de transition, auquel cas la présence de peroxydes organiques dans l'échantillon, qui a été hydrolysé au moins partiellement en peroxyde d'hydrogène par l'acide fort du premier réactif, prend une couleur particulière. L'invention concerne également un nécessaire contenant les deux réactifs séparés, un récipient de réactifs mélangés pour la détection du peroxyde, et un nécessaire contenant un tel récipient.

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