EN ISO 9647:2022

SLOVENSKI STANDARD
01-maj-2022
Jeklo - Določevanje vanadija - Metoda s plamensko atomsko absorpcijsko
spektrometrijo (FAAS) (ISO 9647:2020)
Steel - Determination of vanadium content - Flame atomic absorption spectrometric
method (FAAS) (ISO 9647:2020)
Stahl - Bestimmung des Vanadiumgehaltes - Flammen-
Atomextinktionsspektrometrisches Verfahren (FAAS) (ISO 9647:2020)
Aciers - Détermination des teneurs en vanadium - Méthode par spectrométrie
d'absorption atomique dans la flamme (SAAF) (ISO 9647:2020)
Ta slovenski standard je istoveten z: EN ISO 9647:2022
ICS:
77.080.20 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9647
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2022
EUROPÄISCHE NORM
ICS 77.080.01
English Version
Steel - Determination of vanadium content - Flame atomic
absorption spectrometric method (FAAS) (ISO 9647:2020)
Aciers - Détermination des teneurs en vanadium - Stahl - Bestimmung des Vanadiumgehaltes - Flammen-
Méthode par spectrométrie d'absorption atomique Atomextinktionsspektrometrisches Verfahren (FAAS)
dans la flamme (SAAF) (ISO 9647:2020) (ISO 9647:2020)
This European Standard was approved by CEN on 20 March 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9647:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 9647:2020 has been prepared by Technical Committee ISO/TC 17 "Steel” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 9647:2022 by
Technical Committee CEN/TC 459/SC 2 “Methods of chemical analysis for iron and steel ” the
secretariat of which is held by SIS.
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 September 2022, and conflicting national standards
shall be withdrawn at the latest by September 2022.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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 9647:2020 has been approved by CEN as EN ISO 9647:2022 without any modification.

INTERNATIONAL ISO
STANDARD 9647
Second edition
2020-02
Steel — Determination of vanadium
content — Flame atomic absorption
spectrometric method (FAAS)
Aciers — Détermination des teneurs en vanadium — Méthode par
spectrométrie d'absorption atomique dans la flamme (SAAF)
Reference number
ISO 9647:2020(E)
©
ISO 2020
ISO 9647:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 9647:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 3
6.1 Atomic absorption spectrometer . 3
6.1.1 Minimum precision (see Annex C) . 3
6.1.2 Limit of detection (see Annex C) . 3
6.1.3 Calibration linearity (see Annex C) . 3
6.1.4 Characteristic concentration (see Annex C) . 3
6.2 Ancillary equipment . 4
7 Sampling . 4
8 Procedure. 4
8.1 Test portion . 4
8.2 Blank test . 4
8.3 Determination . 4
8.3.1 Preparation of the test solution . 4
8.3.2 Preparation of the calibration solutions . 4
8.3.3 Adjustment of the atomic absorption spectrometer. 5
8.3.4 Spectrometric measurements . 6
9 Expression of results . 7
9.1 Use of the calibration curve . 7
9.2 Use of bracketing method . 8
10 Precision . 8
11 Test report . 9
Annex A (informative) Additional information on the international interlaboratory test.10
Annex B (informative) Graphical representation of precision data .13
Annex C (normative) Procedures for the determination of instrumental criteria.14
Bibliography .16
ISO 9647:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 1, Methods of
determination of chemical composition.
This second edition cancels and replaces the first edition (ISO 9647:1989), which has been technically
revised. The main changes compared to the previous edition are as follows:
— a complete revaluation of the precision data;
— amendment of the field of application.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 9647:2020(E)
Steel
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