Determination of nitrogen in uranium-plutonium mixed oxide fuel by gas chromatography after fusion in an inert gas atmosphere

Hiyama, Toshiaki; Takahashi, Toshio; Kamimura, Kazuo

doi:10.1016/s0003-2670(97)00109-8

Cited by 12 publications

(3 citation statements)

References 10 publications

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“…It is ascribed that oxygen extracted from the RGO could not completely diffuse to the sample surface . The molten effect of the flux is good at high temperature, more carbon will be dispersed into a molten flux, the reaction of oxygen and carbon is more rapid and complete . Therefore, the temperature of 1800 ο C was chosen for all experiments.…”

Section: Resultsmentioning

confidence: 99%

Fast Simple Determination of Oxygen in Reduced Graphene Oxide by Inert Gas Fusion Method

Wang

Chen²,

et al. 2018

ChemistrySelect

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A new method that combines inert gas fusion with infrared spectrometric detection for fast simple determination of total oxygen in reduced graphene oxide (RGO) has been established in this paper. The whole analyzing process was introduced, including calibration, temperature selection and sample weight selection. The equation of calculation the oxygen content of RGO in this method was given. The precision of the new method has been verified by measurement of a RGO sample.The RGO after measurement was characterized by X-ray photoelectron spectroscopy (XPS). The relative standard deviation (RSD) of oxygen was 1.02%. The results were consistent with that obtained by the conventional classic method XPS. It has shown that the new method is accurate and efficient. The method of testing a RGO sample needs 140 s. The inert gas fusion-infrared method is a fast simple method.

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Section: Resultsmentioning

confidence: 99%

Fast Simple Determination of Oxygen in Reduced Graphene Oxide by Inert Gas Fusion Method

Wang

Chen²,

et al. 2018

ChemistrySelect

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“…Thus, determination of uranium requires high sensitivity and selectivity due to its strong association with other elements. Therefore, several analytical techniques such as inductively coupled plasma atomic emission spectrometry (Fujino et al 2000), inductively coupled plasma-mass spectrometry (ICP-MS;Sabarudin 2007;D'Ilioet al 2007;Varga and Suranyi 2007), neutron activation analysis (NAA), gamma and alpha spectrometry (Ehmann et al 1991;Parry 1991;Smales 1996), gas chromatography (Hao et al 1996;Hiyama et al 1997), differential pulse polarography (Puri et al 2002), and electroanalysis using ion selective electrode (Koji et al 2003;Shamsipur et al 2004;Shamsipur et al 2002) have been reported for uranium determination. Although these methods benefit from a high sensitivity and favorable detection limits, their application requires expensive equipment and involves a higher running cost.…”

Section: Introductionmentioning

confidence: 99%

Determination of Ultra Trace Amounts of Uranium (VI) by Adsorptive Stripping Voltammetry Using L-3-(3, 4-dihydroxy phenyl) Alanine as a Selective Complexing Agent

et al. 2008

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The spectrophotometric behavior of uranium (VI) with L-3-(3, 4-dihydroxy phenyl) alanine (LDOPA) reagent revealed that the uranium can form a ML 2 complex with LDOPA in solution. Thus a highly sensitive adsorptive stripping voltammetric protocol for measuring of trace uranium, in which the preconcentration was achieved by adsorption of the uranium-LDOPA complex at hanging mercury drop electrode (HMDE), is described. Optimal conditions were found to be a 0.02 M ammonium buffer (pH 9.5) containing 2.0 Â 10 À5 M (LDOPA), an accumulation potential of À0.1 V (versus Ag=AgCl) and an accumulation time of 120 sec.The peak current and concentration of uranium accorded with linear relationship in the range of 0.5-300 ng ml À1 . The relative standard deviation (at 10 ng ml À1 ) is 3.6% and the detection limit is 0.27 ng ml À1 . The interference of some common ions was studied. Applicability to different real samples is illustrated. The attractive behavior of this reagent holds great promise for routine environmental and industrial monitoring of uranium.

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“…As the chemical toxicity of uranium is similar to that of lead [1], its monitoring in the environment is essential. Various instrumental analytical techniques can be applied for this purpose and principally spectrometry [2 -4], liquid and gas chromatography [5,6] and neutron activation analysis [7]. Compared to these techniques, electroanalysis is characterized by rapidity, simplicity, low cost, portable instrumentation and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Stripping Voltammetric Determination of Trace Uranium with a Bismuth‐Film Electrode Based on the U(VI)→U(V) Reduction Step of the Uranium‐Cupferron Complex

2006

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This work reports the use of adsorptive stripping voltammetry (AdSV) for the determination of uranium on a preplated rotating-disk bismuth-film electrode (BiFE). The principle of the method relied on the complexation of U(VI) ions with cupferron and the subsequent adsorptive accumulation of the complex on the surface of the BiFE. The uranium in the accumulated complex was then reduced by means of a cathodic voltammetric scan while the analytically useful U(VI) ! U(V) reduction signal was monitored. The experimental variables as well as potential interferences were investigated and the figures of merit of the method were established. Using the selected conditions, the 3s limit of detection for uranium was 0.1 mg L À1 at a preconcentration time of 480 s and the relative standard deviation was 4.7% at the 5 mg L À1 level for a preconcentration time of 120 s (n ¼ 8). The accuracy of the method was established by analyzing a reference sea water sample.

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Determination of nitrogen in uranium-plutonium mixed oxide fuel by gas chromatography after fusion in an inert gas atmosphere

Cited by 12 publications

References 10 publications

Fast Simple Determination of Oxygen in Reduced Graphene Oxide by Inert Gas Fusion Method

Fast Simple Determination of Oxygen in Reduced Graphene Oxide by Inert Gas Fusion Method

Determination of Ultra Trace Amounts of Uranium (VI) by Adsorptive Stripping Voltammetry Using L-3-(3, 4-dihydroxy phenyl) Alanine as a Selective Complexing Agent

Adsorptive Stripping Voltammetric Determination of Trace Uranium with a Bismuth‐Film Electrode Based on the U(VI)→U(V) Reduction Step of the Uranium‐Cupferron Complex

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