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Saturday, August 8, 2020 | History

2 edition of Automated Controlled-Potential Coulometric Determination of Uranium. found in the catalog.

Automated Controlled-Potential Coulometric Determination of Uranium.

Atomic Energy of Canada Limited.

Automated Controlled-Potential Coulometric Determination of Uranium.

by Atomic Energy of Canada Limited.

  • 99 Want to read
  • 28 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesAtomic Energy of Canada Limited. AECL -- 7696
ContributionsKnight, C., Clegg, D., Wright, K.
ID Numbers
Open LibraryOL21969523M

with completely automated coulometric analysis of several components just around the corner. The digital com- puter, which has been widely used for for determination of traces of metals and based on electrodeposition on a Au- A summary of controlled potential coulometric determinations is given in .   Controlled-potential coulometry is a relatively time consuming analysis, with a typical analysis requiring 30–60 min. Coulometric titrations, on the other hand, require only a few minutes, and are easy to adapt to an automated analysis.

A rapid procedure for the controlled-potential coulometric determination of gold in the milligram range was developed and is based on its electro-deposition from a M HCl solution at a. kinds of analytical methods for uranium in accordance with the request by Japan Atomic Fuel Corporation. The coulometric determination of uranium (VI) by using a mercury cathode at a controlled potential was studied by G. L. Booman, W. B. Holbrook and ].E. Rein2). It was found to be very useful for the analysis of uranium.

This test method covers the determination of milligram quantities of plutonium in unirradiated uranium-plutonium mixed oxide having a U/Pu ratio range of to This test method is also applicable to plutonium metal, plutonium oxide, uranium-plutonium mixed carbide, various plutonium compounds including fluoride and chloride salts, and plutonium solutions. Controlled potential coulometric methods have widespread use in the determination of several metal ions. The technique is widely adopted for the determination of uranium and plutonium and thus finds extensive use in the nuclear energy field. Coulometric titrations can readily be adapted to automatic titrations as the current control is.


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Automated Controlled-Potential Coulometric Determination of Uranium by Atomic Energy of Canada Limited. Download PDF EPUB FB2

Abstract. Milligram amounts of uranium can be determined by controlled-potential coulometry. The determination is based on the direct electrolytic reduction of uranium (VI) at a mercury cathode under conditions such that the electrolysis proceeds with virtually % current efficiency, that is, under conditions such that the amount of electricity required to accomplish complete reduction is a.

Coulometric methods for uranium and plutonium determination. Radiochemistry59 (1), DOI: /S S. Sarkar, K. Une, Y. Tominaga.

Determination of oxygen to uranium ratio in irradiated uranium dioxide by controlled potential by: Controlled potential coulometry was applied to the determination of plutonium solution concentrations in the range to 50 grams per liter.

Electronic equipment, titration cells and procedures are described. The procedures are simple enough, and the equipment.

A controlled potential coulometric method is described for the determination of uranium in the presence of plutonium and iron based on the reduction of uranium(VI) to uranium(IV) at a mercury cathode, after reduction of plutonium to plutonium(III) with by:   Controlled Potential Coulometry (CPC) is generally regarded as one of the most accurate analytical methods available for the quantification of plutoni Author: Giacomo Canciani, Ygor Davrain, Marielle Crozet, Danièle Roudil, Sébastien Picart.

A method is described for the simultaneous determination of plutonium and uranium in mixed oxides by controlled potential coulometry at a gold working electrode in two stages: first a coulometric oxidation, at V vs.

a silver/silver chloride electrode, of Pu(III) and U(IV) to Pu(IV) and U(VI) by a combination of a direct electrode reaction and a secondary chemical reaction proceeding. AUTOMATED CONTROLLED- POTENTIAL COULOMETRIC DETERMINATION OF URANIUM by C.H. Knight, D.E. Clegg, K.D.

Wright and R.M. Cassidy 1. INTRODUCTION Controlled-potential coulometry (CPC) is an analytical technique commonly used in the nuclear industry for determination of electroactive metals (1).

At Chalk River Nuclear Laboratories. Determination of Technetium by Controlled-Potential Coulometric Titration in Buffered Sodium Tripolyphosphate Medium. Analytical Chemistry35 (6), DOI: /aca P. Ho and M. Marsh. Some Applications of Ion Exchange Membranes in Automatic Coulometric Aqueous Acid-Base Titrations.

Controlled-potential coulometric determination of plutonium with concurrent correction for a second reversible couple. Analytica Chimica Acta, DOI: /S(00) Lowell M.

Schwartz, Jackson E. Harrar. Predictive coulometry based on first-order kinetic linearization. GENERAL DISCUSSION Primary controlled-potential coulometric determination of total Pu The determination of plutonium by primary controlled-potential coulometric titration was developed by Scott and Peekema."'12 That method was evaluated and has been used at ORNL with minor modifications for routine analysis of "product" samples from the Power.

High-Sensitivity Controlled-Potential Coulometric Titrator. Controlled-Potential Coulometric Determination of Milli- and Microgram Quantities of Uranium and Iron.

Analytical Chemistry37 (6), DOI: /aca Fletcher L. Moore and W. Controlled-potential coulometric analyses have been used to determine the concentration of more than 50 chemical elements, including trace metals and halides ions.

These analyses are frequently used for the determination of uranium and plutonium, as well as for the measurement of oxygen content. High-Sensitivity Controlled-Potential Coulometric Titrator.

Controlled-Potential Coulometric Determination of Milli- and Microgram Quantities of Uranium and. Summary. A simultaneous determination of plutonium and uranium in sulphuric acid solution by controlled potential coulometry is described.

After a pre-electrolysis of M sulphuric acid on a mercury pool electrode at + V vs. the saturated silver chloride electrode the sample is added to the electrolysis cell and plutonium and uranium are subsequently reduced at + V and − V.

The automated controlled-potential coulometer for the determination of plutonium described is the second in a series of automated instruments designed to determine plutonium and uranium contents in nuclear fuel cycle materials. The measurement precision of the instrument is % relative standard deviation at the 5-mg plutonium level.

High accuracy plutonium mass determination by controlled-potential coulometry Article (PDF Available) in Radiochimica Acta January with Reads How we measure 'reads'. Note. Many controlled-potential coulometric methods for Cu 2 + use a potential that is negative relative to the standard hydrogen electrode—see, for example, Rechnitz, G.

Controlled-Potential Analysis, Macmillan: New York,p Based on the ladder diagram in Figure you might expect that applying a potential. A controlled potential coulometric method developed earlier for the determination of uranium in the presence of iron or plutonium using platinum working electrode was extended for individual.

4. Electrolytic determination of organic compounds: Controlled potential coulometry offers a new step for the electrolytic determination of organic compounds. Trichloroacetic acid and picric acid are quantitatively reduced at a mercury cathode.

Coulometric methods permit the analysis of these compounds with an accuracy of %. References 1. This investigation was made to evaluate the use of coulometric techniques in the determination of uranium on a micro scale and to evaluate the use of the automatic coulometric titrator for.

Accurate and precise determination of 2–25 mg amounts of uranium by means of a special automatic potentiometric titration A controlled-potential coulometric e.g., the determination of.Miscellaneous: Automated controlled-potential coulometer for plutonium determination (Engineering Materials).The determination is made by quantitatively reducing or oxidizing the species with a direct electrode reaction at a controlled potential.

The method was used in determining uranium, plutonium, europium, neptunium, and the ratio of oxygen to uranium in uranium dioxide. The coulometer cell is a glass vessel containing three electrodes.