INDIRECT, ION-ANNIHILATION ELECTROGENERATED CHEMILUMINESCENCE AND ITSAPPLICATION TO THE DETERMINATION OF AROMATIC TERTIARY-AMINES

A novel method for the determination of aromatic tertiary amines has b een developed, based on indirect, ion-annihilation electrogenerated ch emiluminescence detection, using simplified flow injection instrumenta tion. The method has been used for the determination of a model compou nd, N,N, N',N'-tetramethyl-p-phenylene diamine. Various experimental c onditions including applied potentials, electrolyte type and concentra tion, and flow rate have been optimized, leading to a detection limit of 4 x 10(-7) mol l(-1), with a log-linear range over three decades of concentration. The expected general formula of potential analyte comp ounds compatible with this technique is postulated to be ArNR(2), wher e R is a methyl or Ar group, and Ar is a simple aromatic system.