A ratio derivative spectrophotometric method for the simultaneous determination of uranium and plutonium

Relan, G. R.; Dubey, A. N.; Vaidyanathan, S.

doi:10.1007/bf02060863

Cited by 10 publications

(1 citation statement)

References 11 publications

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“…A large number of destructive and nondestructive analytical techniques − are available in the arsenal of an analyst for determination of U and Pu in nuclear fuel samples, but redox titrimetric methods offer several advantages over other techniques if cost, time, precision, accuracy, space, and the analyst’s effort are all taken into account. Most of the methods involve expensive equipment, are time-consuming, and are not capable of giving results with accuracy and precision better than 1% .…”

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confidence: 99%

Poly(3,4-ethylenedioxythiophene)–Poly(styrenesulfonate)-Coated Glassy-Carbon Electrode for Simultaneous Voltammetric Determination of Uranium and Plutonium in Fast-Breeder-Test-Reactor Fuel

et al. 2018

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Uranium (U) and plutonium (Pu) contents in nuclear materials must be maintained to a definite level in order to get the desired performance of the fuel inside the reactor. Therefore, high accuracy and precision is an essential criterion for the determination of U and Pu. We already reported the voltammetric determination of Pu in the presence of U in fast-breeder-test-reactor (FBTR) fuel samples, but interfacial, coupled chemical reactions between U(IV) and Pu(IV) enhance the peak-current density of U(VI) reduction and thus make voltammetry unsuitable for the quantitative determination of U in the presence of Pu. Thus, developing a voltammetric method for the simultaneous determination of U and Pu is highly challenging. Herein, we report the simultaneous voltammetric determination of U and Pu in 1 M sulfuric acid (HSO) on a poly(3,4-ethylenedioxythiophene) (PEDOT)-poly(styrenesulfonate) (PSS)-modified glassy-carbon (GC) electrode (PEDOT-PSS/GC). The modified electrode shows enhanced performance compared with bare GC electrodes. The peak-current density for U(VI) reduction is enhanced in the presence of Pu(IV), but it attains saturation when [Pu]/[U] in solution is maintained ≥2. Hence, under these circumstances, the variation of Pu concentration no longer influences the U(VI)-reduction peak, and thus the quantitative determination of U in the presence of Pu is possible. No interference is observed from commonly encountered impurities present in FBTR fuel samples. This method shows accuracy and precision comparable to those of the biamperometry method. High robustness, fast analysis, simultaneous determination, reduced radiation exposure to the analyst, and ease of recovery of U and Pu from analytical waste makes it a suitable candidate to substitute the presently applied biamperometry method.

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confidence: 99%

Poly(3,4-ethylenedioxythiophene)–Poly(styrenesulfonate)-Coated Glassy-Carbon Electrode for Simultaneous Voltammetric Determination of Uranium and Plutonium in Fast-Breeder-Test-Reactor Fuel

et al. 2018

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Simultaneous determination of uranium and plutonium at trace levels in process streams using Arsenazo III by derivative spectrophotometry

Dubey

Relan

Vaidyanathan

1999

J Radioanal Nucl Chem

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A derivative spectrophotometric method has been developed for the simultaneous determination of uranium and plutonium at trace levels in various process streams in 3M HNO~ medium using Arsenazo III. The method was developed with the objective of measuring both uranium and plutonium in the same aliquot in fairly high burn-up fuels. The first derivative absorbances of the uranium and plutonium Arsenazo Ill complexes at 632 nm and 606.5 urn, respectively, were used for their quantification. Mixed aliquots of uranium (20-28 gg/ml) and plutonium (0.5-1.5 gg/ml) with U/Pu ratio varying from 25 to 40 were analysed using this technique. A relative error of about 5% was obtained for uranium and plutonium. The method is simple, fast and does not require separation of uranium and plutonium. The effect of presence of many fission pmducts~ corrosion products and complexing anions on determination of uranium and plutonium was also studied.

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Sequential determination of uranium (IV), free acidity and hydrazine in a single aliquot

Ganesh

Khan

Ahmed

et al. 2010

J Radioanal Nucl Chem

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A ratio derivative spectrophotometric method for the simultaneous determination of uranium and plutonium

Cited by 10 publications

References 11 publications

Poly(3,4-ethylenedioxythiophene)–Poly(styrenesulfonate)-Coated Glassy-Carbon Electrode for Simultaneous Voltammetric Determination of Uranium and Plutonium in Fast-Breeder-Test-Reactor Fuel

Poly(3,4-ethylenedioxythiophene)–Poly(styrenesulfonate)-Coated Glassy-Carbon Electrode for Simultaneous Voltammetric Determination of Uranium and Plutonium in Fast-Breeder-Test-Reactor Fuel

Simultaneous determination of uranium and plutonium at trace levels in process streams using Arsenazo III by derivative spectrophotometry

Sequential determination of uranium (IV), free acidity and hydrazine in a single aliquot

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