EN ISO 17072-2:2022

SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN ISO 17072-2:2019
Usnje - Kemijsko določevanje kovin - 2. del: Celotni delež kovin (ISO 17072-2:2022)
Leather - Chemical determination of metal content - Part 2: Total metal content (ISO
17072-2:2022)
Leder - Chemische Bestimmung des Metallgehaltes - Teil 2: Gesamtmetallgehalt (ISO
17072-2:2022)
Cuir - Dosage chimique des métaux - Partie 2: Teneur totale en métaux (ISO 17072-
2:2022)
Ta slovenski standard je istoveten z: EN ISO 17072-2:2022
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 17072-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 59.140.30 Supersedes EN ISO 17072-2:2019
English Version
Leather - Chemical determination of metal content - Part 2:
Total metal content (ISO 17072-2:2022)
Cuir - Dosage chimique des métaux - Partie 2: Teneur Leder - Chemische Bestimmung des Metallgehaltes -
totale en métaux (ISO 17072-2:2022) Teil 2: Gesamtmetallgehalt (ISO 17072-2:2022)
This European Standard was approved by CEN on 1 August 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, Türkiye 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 17072-2:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 17072-2:2022) has been prepared by Technical Committee ISO/IULTCS
"International Union of Leather Technologists and Chemists Societies" in collaboration with Technical
Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI.
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 March 2023, and conflicting national standards shall
be withdrawn at the latest by March 2023.
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.
This document supersedes EN ISO 17072-2:2019.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. 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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 17072-2:2022 has been approved by CEN as EN ISO 17072-2:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 17072-2
IULTCS
IUC 27-2
Third edition
2022-07
Leather — Chemical determination of
metal content —
Part 2:
Total metal content
Cuir — Dosage chimique des métaux —
Partie 2: Teneur totale en métaux
Reference numbers
ISO 17072-2:2022(E)
IULTCS/IUC 27-2:2022(E)
ISO 17072-2:2022(E)
IULTCS/IUC 27-2:2022(E)
© ISO 2022
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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 17072-2:2022(E)
IULTCS/IUC 27-2:2022(E)
Contents Page
Foreword .iv
1 S c op e . 1
2 Nor m at i ve r ef er enc e s . 1
3 Terms and definitions . 2
4 P r i nc iple . 2
5 R e a g ent s . 2
6 Apparatus and materials .3
7 Sampling and sample preparation . 3
8 P r o c e du re .4
8 .1 Ac id d i g e s t ion . 4
8 . 2 M ic r ow ave d i g e s t ion . 4
8.3 A nalysis by ICP, AAS and SFA. 4
8.3.1 G eneral . 4
8 . 3 . 2 IC P . . 5
8 .3 .3 A A S . 5
8.3.4 Analysis by SFA technique . 5
9 C alculation and expression of results . 5
10 Te s t r ep or t . 6
Annex A (informative) Interlaboratory test results and quantification limits .7
Annex B (normative) Acidic digestion for the determination of total aluminium and
titanium content in leather. 9
Bibliography .11
iii
ISO 17072-2:2022(E)
IULTCS/IUC 27-2:2022(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 of the voluntary nature of standards, 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 www.iso.org/
iso/foreword.html.
IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to
further the advancement of leather science and technology. IULTCS has three Commissions, which
are responsible for establishing international methods for the sampling and testing of leather. ISO
recognizes IULTCS as an international standardizing body for the preparation of test methods for
leather.
This document was prepared by the Chemical Test Commission of the International Union of Leather
Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of
which is held by UNI, in accordance with the agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 17072-2:2019), which has been
technically revised. The main changes are as follows:
— Clause 1, Clause 6 and 8.1 have been editorially and technically modified;
— a new Annex B has been added describing the digestion procedure for the determination of
aluminium and titanium.
A list of all parts in the ISO 17072 series can be found on the ISO website.
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 17072-2:2022(E)
INTERNATIONAL STANDARD
IULTCS/IUC 27-2:2022(E)
Leather — Chemical determination of metal content —
Part 2:
Total metal content
1 S cope
This document specifies a method for the determination of the total metal content in leather using
digestion of the leather and subsequent determination with inductively coupled plasma optical emission
spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption
spectrometry (AAS) or spectrometry of atomic fluorescence (SFA).
This method determines the total metal content in leather. It is not compound-specific or specific to the
oxidation state of the metals.
The met
...