Determination of Hydrazine and Phenylhydrazine Based on Formation of Gold Nanoparticles Stabilized with Non-ionic Surfactants

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Karami, Pari | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43228 (03)
University: Sharif University of Technology
Department: Chemistry
Advisor(s): Hormozi Nezhad, Mohammad Reza
Abstract:
A simple and effective procedure is proposed for colorimetric detection of hydrazine and phenylhydrazine. It was found that the reduction of AuCl4- to gold nanoparticles (Au-NPs) by these compunds in the presence of Tween-20 as a stabilizing agent produced very intense surface plasmon resonance peak of Au-NPs. The plasmon absorbance of the Au-NPs allows the quantitative spectrophotometric detection of the hydrazine and phenylhydrazine. The calibration curves derived from the changes in absorbance at λ = 530 and λ = 550 nm for hydrazine and phenylhydrazine, respectively were linear with concentration of hydrazine and phenylhydrazine in the range of 1.0×10-6- 2.0×10-4 M, 5×10-6 - 4×10-4 M, respectively. The resulting nanoparticles were characterized using UV–Vis spectroscopy, Transmission electron microscopy (TEM) and Dynamic Light Scattering (DLS).The method was applied successfully to the determination of hydrazine in boiler feedwater
Keywords:
Gold Nanoparticle ; Phenyl Hydrazin ; Colorimetric Detection ; Hydrazine

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