Synthesis of magnetic iron oxide nanoparticles and its application for simultaneous determination of hydrazine and hydroxylamine

In the present paper, the electrochemical properties of magnetic iron oxide nanoparticles (Fe₂O₃ and Fe₃O₄) as highly sensitive sensors for the simultaneous determination of hydrazine and hydroxylamine was described. The electrochemical behavior of hydrazine and hydroxylamine was investigated using cyclic voltammetry, chronoamperometry and differential pulse voltammetry techniques. The results show that, at the modified electrode surface, the peaks of hydrazine and hydroxylamine oxidation were clearly separated from each other. Based on differential pulse voltammetry, the oxidation of hydrazine exhibited the dynamic range between 1.0- 1000.0 µM, and the detection limit (3σ) was 0.65 µM. These features will facilitate the determination of hydrazine and hydroxylamine in samples at a magnetic iron oxide modified electrode.