Analytical Sciences


Abstract − Analytical Sciences, 20(8), 1199 (2004).

Simultaneous Kinetic-Spectrophotometric Determination of Hydrazine and Acetylhydrazine in Micellar Media Using the H-Point Standard Addition Method
Abbas AFKHAMI and Ali Reza ZAREI
Department of Chemistry, Faculty of Sciences, Bu-Ali Sina University, Hamadan, Iran
The H-point standard addition method (HPSAM), based on a spectrophotometric measurement for the simultaneous determination of hydrazine and acetylhydrazine, is described. This method is based on the difference between the rates of their reactions with N,N-dimethylaminobenzaldehyde (DAB) in the presence of sodium dodecyl sulfate (SDS) in acidic media. The results showed that hydrazine and acetylhydrazine could be determined simultaneously in the range of 0.020 - 0.70 and 0.20 - 5.0 mg L-1, respectively. Under the working conditions, the proposed method was successfully applied to the simultaneous determination of hydrazine and acetylhydrazine in several synthetic mixtures and plasma and water samples.