prEN ISO 17072-2

Leather - Chemical determination of metal content - Part 2: Total metal content (ISO/DIS 17072-2:2021)

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.

Leder - Chemische Bestimmung des Metallgehaltes - Teil 2: Gesamtmetallgehalt (ISO/DIS 17072-2:2021)

Dieses Dokument legt ein Verfahren zur Bestimmung des Gesamtgehaltes von Metallen in Leder fest, indem ein Aufschluss des Leders und danach eine Bestimmung der Metalle mittels optischer Emissionsspektrometrie mit induktiv gekoppeltem Plasma (ICP-OES, en: inductively coupled plasma optical emission spectrometry), Massenspektrometrie mit induktiv gekoppeltem Plasma (ICP-MS, en: inductively coupled plasma mass spectrometry), Atomabsorptionsspektrometrie (AAS, en: atomic absorption spectrometry) oder Atomfluoreszenzspektrometrie (SFA, en: spectrometry of atomic fluorescence) durchgeführt werden.
Dieses Verfahren bestimmt den gesamten Metallgehalt in Leder; es ist nicht spezifisch für die jeweilige chemische Verbindung oder spezifisch für den Oxidationszustand der Metalle.
Das Verfahren ist zur Bestimmung der folgenden Metalle anwendbar:
Aluminium (Al) Kupfer (Cu) Kalium (K)
Antimon (Sb) Eisen (Fe) Selen (Se)
Arsen (As) Blei (Pb) Silicium (Si)
Barium (Ba) Magnesium (Mg) Natrium (Na)
Cadmium (Cd) Mangan (Mn) Zinn (Sn)
Calcium (Ca) Quecksilber (Hg) Titan (Ti)
Chrom (Cr) (ausgenommen chromgegerbtes Leder) Molybdän (Mo) Zink (Zn)
Cobalt (Co) Nickel (Ni) Zirconium (Zr)
Dieses Verfahren ist außerdem zur Bestimmung von Bor (B) in Leder geeignet.
Bei chromgegerbtem Leder ist es häufig sinnvoller, ISO 5398-1 [1], ISO 5398-2 [2], ISO 5398-3 [3] oder ISO 5398-4 [4] anzuwenden.
Ringversuchsergebnisse und die mit ICP-OES erreichbaren Bestimmungsgrenzen sind in Anhang A, Tabelle A.1 und Tabelle A.2, angegeben.
Für die Bestimmung von Al und Ti in Leder muss das in Anhang B angegebene Extraktionsverfahren angewendet werden.

Cuir - Détermination chimique de la teneur en métal - Partie 2: Teneur totale en métaux (ISO/DIS 17072-2:2021)

Le présent document spécifie une méthode de détermination de la teneur totale en métaux présents dans le cuir par digestion du cuir suivie d'une détermination par spectrométrie d'émission optique avec plasma à couplage inductif (ICP-OES), par spectrométrie d'absorption atomique (AAS), par spectrométrie de masse avec plasma à couplage inductif (ICP-MS) ou par spectrométrie de fluorescence atomique (SFA).
Cette méthode détermine la teneur totale en métaux présents dans le cuir. Elle n'est pas spécifique à un composé ni à l'état d'oxydation des métaux.

Usnje - Kemijsko določevanje kovin - 2. del: Celotni delež kovin (ISO/DIS 17072-2:2021)

General Information

• Status: Not Published
• ICS: 59.140.30 - Leather and furs
• Technical Committee: CEN/TC 289 - Leather
• Drafting Committee: CEN/TC 289/WG 1 - Chemical test methods
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 14-Apr-2022
• Completion Date: 14-Apr-2022
• Ref Project: oSIST prEN ISO 17072-2:2021 - Leather - Chemical determination of metal content - Part 2: Total metal content (ISO/DIS 17072-2:2021)

RELATIONS

• Revised: EN ISO 17072-2:2019 - Leather - Chemical determination of metal content - Part 2: Total metal content (ISO 17072-2:2019)
• Effective Date: 21-Jul-2021

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 17072-2:2021
01-november-2021
Usnje - Kemijsko določevanje kovin - 2. del: Celotni delež kovin (ISO/DIS 17072-
2:2021)

Leather - Chemical determination of metal content - Part 2: Total metal content (ISO/DIS

17072-2:2021)
Leder - Chemische Bestimmung des Metallgehaltes - Teil 2: Gesamtmetallgehalt
(ISO/DIS 17072-2:2021)

Cuir - Détermination chimique de la teneur en métal - Partie 2: Teneur totale en métaux

(ISO/DIS 17072-2:2021)
Ta slovenski standard je istoveten z: prEN ISO 17072-2
ICS:
59.140.30 Usnje in krzno Leather and furs
oSIST prEN ISO 17072-2:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 17072-2:2021
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oSIST prEN ISO 17072-2:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 17072-2
IULTCS
IUC 27-2
IULTCS Secretariat: ISO
Voting begins on: Voting terminates on:
2021-09-16 2021-12-09
Leather — Chemical determination of metal content —
Part 2:
Total metal content
Cuir — Détermination chimique de la teneur en métal —
Partie 2: Teneur totale en métaux
ICS: 59.140.30
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference numbers
NATIONAL REGULATIONS.
ISO/DIS 17072-2:2021(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
IUC 27-2:2021(E)
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2021
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oSIST prEN ISO 17072-2:2021
ISO/DIS 17072-2:2021(E)
IUC 27-2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 17072-2:2021
ISO/DIS 17072-2:2021(E)
IUC 27-2:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Principle ........................................................................................................................................................................................................................ 2

5 Reagents ........................................................................................................................................................................................................................ 2

6 Apparatus and materials.............................................................................................................................................................................. 3

7 Sampling and sample preparation .................................................................................................................................................... 3

8 Procedure..................................................................................................................................................................................................................... 4

8.1 Acid digestion ........................................................................................................................................................................................... 4

8.2 Microwave digestion .......................................................................................................................................................................... 4

8.3 Analysis by ICP, AAS and SFA ...................................................................................................................................................... 4

8.3.1 General...................................................................................................................................................................................... 4

8.3.2 ICP................................................................................................................................................................................................. 4

8.3.3 AAS ............................................................................................................................................................................................... 5

8.3.4 Analysis by SFA technique ....................................................................................................................................... 5

9 Calculation and expression of results ............................................................................................................................................. 5

10 Test report ................................................................................................................................................................................................................... 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

© ISO 2021 – All rights reserved iii
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oSIST prEN ISO 17072-2:2021
ISO/DIS 17072-2:2021(E)
IUC 27-2:2021(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 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 the following

URL: www .iso .org/ iso/ foreword .html.

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).

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 third edition cancels and replaces the second edition (ISO 17072-2:2019), which has been

technically revised as follows:

— the Scope and Clauses 6 and 8.1 have been editorially and technically modified;

— a new normative 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 2021 – All rights reserved
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oSIST prEN ISO 17072-2:2021
ISO/DIS 17072-2:2021(E)
DRAFT INTERNATIONAL STANDARD
IUC 27-2:2021(E)
Leather — Chemical determination of metal content —
Part 2:
Total metal content
1 Scope

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 method is applicable for determining the following metals:
Aluminium (Al) Copper (Cu) Potassium (K)
Antimony (Sb) Iron (Fe) Selenium (Se)
Arsenic (As) Lead (Pb) Silicon (Si)
Barium (Ba) Magnesium (Mg) Sodium (Na)
Cadmium (Cd) Manganese (Mn) Tin (Sn)
Calcium (Ca) Mercury (Hg) Titanium (Ti)
Chromium (Cr) (except chromium-tanned leathers) Molybdenum (Mo) Zinc (Zn)
Cobalt (Co) Nickel (Ni) Zirconium (Zr)
This method is also suitable for determining Boron (B) in leather.
[1] [2]

In the case of chromium-tanned leathers, it is often more relevant to use ISO 5398-1 , ISO 5398-2 ,

[3] [4]
ISO 5398-3 or ISO 5398-4 .

Interlaboratory test results and the quantification limits possible with ICP-OES are given in Table A.1

and Table A.2 of Annex A.

For the determination of Al and Ti in leather the extraction procedure given in Annex B shall be used.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 2418, Leather — Chemical, physical and mechanical and fastness tests — Sampling location

ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 4044, Leather — Chemical tests — Preparation of chemical test samples
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oSIST prEN ISO 17072-2:2021
ISO/DIS 17072-2:2021(E)
IUC 27-2:2021(E)
ISO 4684, Leather — Chemical tests — Determination of volatile matter

ISO 11885, Water quality — Determination of selected elements by inductively coupled plasma optical

emission spectrometry (ICP-OES)

ISO 15586, Water quality — Determination of trace elements using atomic absorption spectrometry with

graphite furnace

ISO 17294-2, Water quality — Application of inductively coupled plasma mass spectrometry (ICP-MS) —

Part 2: Determination of selected elements including uranium isotopes

ISO 17852, Water quality — Determination of mercury — Method using atomic fluorescence spectrometry

3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Principle

Digestion of the sample of leather (see ISO 4044) is carried out using a ternary acid mixture or

microwave digestion until complete mineralization is achieved. The residue is re-dissolved with water

and analysed by AAS, ICP or SFA (for mercury).
The results are reported on the dry matter of the leather.
5 Reagents

WARNING — The concentrated acids used in this method are very corrosive and/or oxidising

liquids, which could raise the possibility of fire in the event of contact with ignitable materials

and promote an existing fire considerably, or could decompose explosively with warming. They

might cause acute or chronic health dangers as well. Mo
...