Reference number
ISO 9891:1994
ISO 9891:1994
© ISO 2024
International Standard
ISO 9891:1994
Determination of carbon content in uranium dioxide powder and sintered pellets — High-frequency induction furnace combustion — Titrimetric/coulometric/infrared absorption methods
Edition 1
1994-12
1994-12
ISO 9891:1994
17772
Published
(Edition 1, 1994)
This publication was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
The methods specified are based on heating a portion of the test sample at a temperature of at least 1100 °C to 1200 °C in an oxygen atmosphere, passing the evolved oxidation products over a purification trap filled with manganese dioxide catalyst and silver permanganate catalyst (that oxidises CO to CO2), trapping the CO2, restoring the initial pH continuously by addition of hydroxyl ions either by potentiostatic titrimetry or by coulometry, or alternatively determining the CO2 by IR absorption and integration of the signal obtained. Is applicable to the determination of 5 µg to 500 µg of carbon.
General information
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Status: PublishedPublication date: 1994-12Stage: International Standard confirmed [90.93]
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Edition: 1Number of pages: 10
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Technical Committee :ISO/TC 85/SC 5ICS :27.120.30
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