Authors: Ali A Ensafi, B Naderi

Publication date: 1997/7/31

Journal name: Microchemical journal

Volume: 56

Pages: 269-275

Publisher: Elsevier

A flow-injection spectrophotometric method for the determination of hydrazine is described.
The method is based on the inhibitory effect of hydrazine on the reaction of thionine with
nitrite in acidic media. The decolorization of thionine by the reaction with nitrite was used to
monitor the reaction spectrophotometrically at 602 nm. The variables that affected the
reaction rate were fully investigated and the optimum conditions were established.
Hydrazine can be determined in the range 2.0–40.0 μg/ml with a limit of detection of 1.0 ...