Sequential determination of free acidity and hydrazine in presence of hydrolysable ions
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Abstract
A simple method for the sequential determination of free acidity and hydrazine in presence of hydrolysable ions is developed and described. In this method, free acid is titrated with standard sodium carbonate solution after the metal ions in solutions are masked with EDTA. Once the end point for the free acid is determined at pH 3.0, an aliquot of formaldehyde is added to liberate the acid equivalent to hydrazine which is then titrated with the same standard sodium carbonate solution using an automatic titration system. The described method is simple, accurate and reproducible. This method is especially applicable to all ranges of nitric acid and heavy metal ion concentration relevant to Purex process used for nuclear fuel reprocessing. The overall recovery of nitric acid is 98.9% with 3% relative standard deviation. The major advantage of the method is that it uses sodium carbonate a primary standard as titrant and generation of corrosive analytical wastes containing oxalate or sulphate is avoided. Valuable metals like uranium and plutonium can easily be recovered from analytical waste before final disposal.
© by Oldenbourg Wissenschaftsverlag, Raipur 492010, Germany
Artikel in diesem Heft
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- Incorporation of iodate into uranyl borates and its implication for the immobilization of 129I in nuclear waste repositories
- Determination of In and Ga in plutonium oxide matrix by ICP-AES after chemical separation
- Sequential determination of free acidity and hydrazine in presence of hydrolysable ions
- Adsorption interaction of astatine species with quartz and gold surfaces
- Application of instrumental neutron activation analysis for the examination of oil pigments
Artikel in diesem Heft
- Investigation on the production and isolation of 149,150,151Tb from 12C irradiated natural praseodymium target
- Luminescence properties of uranium(VI) citrate and uranium(VI) oxalate species and their application in the determination of complex formation constants
- Bioaccumulation of U(VI) by Sulfolobus acidocaldarius under moderate acidic conditions
- Electrochemical studies of U(VI)/U(V) in saturated Na2CO3 solution at gold nanoparticles embedded CTA-modified electrode
- Spectroscopic monitoring of spent nuclear fuel reprocessing streams: an evaluation of spent fuel solutions via Raman, visible, and near-infrared spectroscopy
- Incorporation of iodate into uranyl borates and its implication for the immobilization of 129I in nuclear waste repositories
- Determination of In and Ga in plutonium oxide matrix by ICP-AES after chemical separation
- Sequential determination of free acidity and hydrazine in presence of hydrolysable ions
- Adsorption interaction of astatine species with quartz and gold surfaces
- Application of instrumental neutron activation analysis for the examination of oil pigments
