A NEW CHEMILUMINESCENCE REAGENT FOR THE DETERMINATION OF RUTHENIUM

A new reagent proflavine N, N, N', N'-tetraacetic acid (PTA) synthesiz ed in our laboratory has been found useful as a chemiluminescence reag ent for the determination of ruthenium (Ru) in pH 2.5 sulfuric acid so lution containing acetone, it can be oxidized catalytically by hydroge n peroxide. With Ru(III) as catalyst, it emits light selectively. The linear range is between 2.0 x 10(-8) and 2.0 x 10(-5) g/ml. The detect ion limit and the recovery rate of the method are 1.0 x 10(-9) g/ml an d 96.0-102%, respectively. The method has been satisfactorily applied to determine trace Ru(III) in synthesized sample.