Chemical Methods for the Determination of Uranium and Plutonium

Ramaniah, M.V.; Natarajan, P.; Venkataramana, P.

doi:10.1524/ract.1975.22.4.199

Cited by 17 publications

(5 citation statements)

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“…Redox titration methods, employing a visual indicator or electrometric end point detection, are widely used for the determination of uranium and plutonium independently in the uranium-plutonium mixed oxides. [11][12][13][14][15][16][17][18][19] The major issue in the quantitative redox titration of a mixed uranium-plutonium solution is the interfering redox reaction between U(IV) and Pu(IV) in acidic solutions. Following discussed redox titrimetric methodologies have been strategically developed to separately determine U and Pu avoiding their mutual interference.…”

Section: Introductionmentioning

confidence: 99%

Electrochemistry of actinides on reduced graphene oxide: craving for the simultaneous voltammetric determination of uranium and plutonium in nuclear fuel

2015

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Section: Introductionmentioning

confidence: 99%

Electrochemistry of actinides on reduced graphene oxide: craving for the simultaneous voltammetric determination of uranium and plutonium in nuclear fuel

2015

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“…Analytical methods commonly used for the determination of uranium are based on redox titrimetry, employing visual indicator or electrometric end point detection, or coulometry [1]. Most of the titrimetric methods available are subject to interference from plutonium and iron.…”

Section: Introductionmentioning

confidence: 99%

“…The electrode system [1] consisting of a pair of identical Pt wires is very simple and easy to maintain. No standard reference electrode like saturated calomel electrode (SCE), which requires careful maintenance, is required.…”

Section: Introductionmentioning

confidence: 99%

A robust biamperometric titration methodology for the determination of uranium by Ti(III) reduction in the presence of plutonium

Nair¹,

Xavier

2009

Radiochimica Acta

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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% .…”

mentioning

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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Chemical Methods for the Determination of Uranium and Plutonium

Cited by 17 publications

References 0 publications

Electrochemistry of actinides on reduced graphene oxide: craving for the simultaneous voltammetric determination of uranium and plutonium in nuclear fuel

Electrochemistry of actinides on reduced graphene oxide: craving for the simultaneous voltammetric determination of uranium and plutonium in nuclear fuel

A robust biamperometric titration methodology for the determination of uranium by Ti(III) reduction in the presence of plutonium

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

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