Patent ID: 7229835

Claim:
An indicator for detecting the presence of amines in a sample comprising: a releasable indicator bound to a compound linked to a solid support; wherein in the presence of amines, said indicator is released, thereby causing a detectable change; and wherein said change is proportional to the amount of amines present in said sample wherein said compound linked to said solid support is represented by the following formula: wherein X represents O, S or NR 1 , wherein R 1 is H or an alkyl group; and wherein R represents said solid support selected from the group consisting of silica gels, silica beads, chitosan, cellulose, cellulose acetate, glass beads, controlled pore glass, agarose, sepharose and modified derivatives thereof, and wherein the releaseable indicator comprises an azo dye linked to the compound through the hydroxy moiety on the compound.