Abstract

A rapid and sensitive colorimetric method has been developed for the quantitative determination of aromatic amines in aqueous solutions. The method is based on a reaction of the amine with p-dimethylaminobenzaldehyde and the intensity of the color formed is determined spectrophotometrically. This method has been adapted to assay the rates of demethylation of p-chloro- N-methylaniline by liver enzyme systems. The advantages of this method over the previously described procedures are discussed.

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