Reagent and method for detecting an adulterant in an aqueous...

Details Reagent and method for detecting an adulterant in an aqueous... Reagent and method for detecting an adulterant in an aqueous...

G - Physics

01

N

G01N 33/493 (2006.01) G01N 31/22 (2006.01)

Patent

CA 2363567

This invention relates to a reagent and use of that reagent for detecting adulterants in aqueous samples, particularly in biological specimens such as urine samples using a diazo dye precursor such as N,N diethyl-1,4-phenylene diamine and a reagent such as creatinine to stabilize a colored intermediate formed by the reaction of the diamine with nitrite ions for a period sufficient to allow that color to be recorded and compared with a separate peak formed by a halogen-based oxidizing agent which may be present in solution.

Cette invention porte sur un réactif et sur l'utilisation de ce réactif détecter des adultérants dans des échantillons aqueux, en particulier dans des prélèvements biologiques tels que des échantillons d'urine, à l'aide d'un précurseur de colorant diazoïque tel que N,N diéthyle-1,4-phénylène diamine et d'un réactif tel que la créatinine pour stabiliser un intermédiaire coloré formé par la réaction de la diamine avec les ions de nitrite pendant une période suffisamment longue pour que l'on puisse enregistrer cette couleur et la comparer avec un pic séparé formé par un agent oxydant à base d'halogène qui peut se trouver en solution.

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