Abstract
In order to determine primary aromatic amines, the characteristic fluorescences of the compounds obtained by the reaction of the several amines with p-dimethylaminobenzaldehyde were measured. The concentration of p-dimethylaminobenzal p-chloroaniline and its relative fluorescence intensity showed a linearity. The relationship between Hammett's substituent constant of the substituents of the aromtic amines and relative fluorescence intensity of the benzalamine compounds of the amines was invstigated. The application of these observations to the micro-determination of aromatic amines was examined. Various types of aromatic primary amine were separated with paper chromatography and reacted with p-dimethylaminobenzaldehyde to form corresponding benzalamine compound, which was detected with ultraviolet lamp and determined in its quantity.
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