EN ISO 9463:2021

SLOVENSKI STANDARD
01-april-2021
Jedrska energija - Tehnologija jedrskih goriv - Določevanje plutonija v raztopinah
dušikove kisline s spektrofotometrijo (ISO 9463:2019)
Nuclear energy - Nuclear fuel technology - Determination of plutonium in nitric acid
solutions by spectrophotometry (ISO 9463:2019)
Énergie nucléaire - Technologie du combustible nucléaire - Détermination du plutonium
dans les solutions d'acide nitrique par spectrophotométrie (ISO 9463:2019)
Ta slovenski standard je istoveten z: EN ISO 9463:2021
ICS:
27.120.30 Cepljivi materiali in jedrska Fissile materials and nuclear
gorivna tehnologija fuel technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9463
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 27.120.30
English Version
Nuclear energy - Nuclear fuel technology - Determination
of plutonium in nitric acid solutions by spectrophotometry
(ISO 9463:2019)
Énergie nucléaire - Technologie du combustible
nucléaire - Détermination du plutonium dans les
solutions d'acide nitrique par spectrophotométrie (ISO
9463:2019)
This European Standard was approved by CEN on 18 January 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9463:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 9463:2019 has been prepared by Technical Committee ISO/TC 85 "Nuclear energy,
nuclear technologies, and radiological protection” of the International Organization for Standardization
(ISO) and has been taken over as EN ISO 9463:2021 by Technical Committee CEN/TC 430 “Nuclear
energy, nuclear technologies, and radiological protection” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2021, and conflicting national standards shall
be withdrawn at the latest by August 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 9463:2019 has been approved by CEN as EN ISO 9463:2021 without any modification.

INTERNATIONAL ISO
STANDARD 9463
Third edition
2019-01
Nuclear energy — Nuclear fuel
technology — Determination of
plutonium in nitric acid solutions by
spectrophotometry
Énergie nucléaire — Technologie du combustible nucléaire —
Détermination du plutonium dans les solutions d'acide nitrique par
spectrophotométrie
Reference number
ISO 9463:2019(E)
©
ISO 2019
ISO 9463:2019(E)
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 9463:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Chemical conditions . 1
5.1 Stability of Pu(VI) . 1
5.2 Rate of oxidation of Pu(IV) to Pu(VI) . 2
5.3 Destruction of the excess oxidant . 2
5.4 Comparison of Ce(IV) and Ag(II) . 2
5.5 Molar extinction coefficient of Pu(VI) . 2
6 Reagents . 3
6.1 General . 3
6.2 Common reagents for methods using silver oxide or cerium as oxidant . 3
6.3 Reagents for method using silver oxide as oxidant . 3
6.4 Reagents for method using Ce(IV) as oxidant . 3
7 Apparatus . 4
8 Test procedure . 4
8.1 Preparation of the different solutions. 4
8.1.1 Plutonium calibration solution . 4
8.1.2 Sample solutions . 5
8.2 Spectrophotometer setup . 6
8.3 Measurements . 6
8.3.1 Background measurement . 6
8.3.2 Measurements on the calibration solution . 7
8.3.3 Measurements on the sample solution . 7
9 Expression of the result. 7
9.1 Calculation of the concentration of plutonium in the sample . 7
9.2 Reproducibility . 8
9.3 Detection limit . 8
10 Interferences . 8
10.1 Anions . 8
10.2 Cations . 9
Annex A (informative) Preparation of silver (II) oxide (AgO) .11
Bibliography .12
ISO 9463:2019(E)
Foreword
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