EN ISO 11936:2023

Leather - Determination of total content of certain bisphenols (ISO 11936:2023)

This document specifies a method for determining the total content (solvent extractible) of the following bisphenols in leather:
—     bisphenol A;
—     bisphenol B;
—     bisphenol F;
—     bisphenol S.
This method requires the use of liquid chromatography (LC) with either a single quadrupole mass spectrometer (MS), a triple quadrupole mass spectrometer (MS/MS), an ultraviolet (UV) detector, a diode array detector (DAD) or a fluorescence detector (FLD) to identify and quantify the bisphenols.
NOTE            This method can also be used for other bisphenols if they are validated by the laboratory.

Leder - Bestimmung des Gesamtgehalts von einzelnen Bisphenolen (ISO 11936:2023)

Dieses Dokument legt ein Verfahren zur Bestimmung des Gesamtgehalts (lösemittelextrahierbar) der folgenden Bisphenole in Leder fest:
   Bisphenol A;
   Bisphenol B;
   Bisphenol F;
   Bisphenol S.
Dieses Verfahren erfordert den Einsatz von Flüssigkeitschromatographie (LC, en liquid chromatography) entweder mit einem Single-Quadrupol-Massenspektrometer (MS), einem Triple-Quadrupol-Massenspektrometer (MS/MS), einem Ultraviolett (UV)-Detektor, einem Diodenarray-Detektor (DAD) oder einem Fluoreszenz-Detektor (FLD) zur Identifizierung und Quantifizierung der Bisphenole.
ANMERKUNG   Dieses Verfahren kann auch für andere Bisphenole verwendet werden, wenn sie vom Laboratorium validiert wurden.

Cuir - Détermination de la teneur totale en certains bisphénols (ISO 11936:2023)

Le présent document spécifie une méthode de détermination de la teneur totale (extractible par solvant) des bisphénols suivants dans le cuir :
—     le bisphénol A ;
—     le bisphénol B ;
—     le bisphénol F ;
—     le bisphénol S.
Cette méthode nécessite de recourir à la chromatographie en phase liquide (CL), couplée soit à un spectromètre de masse à simple quadripôle (MS), à un spectromètre de masse à triple quadripôle (MS/MS), à un détecteur ultraviolet (UV), à un détecteur à barrettes de diodes (DAD) ou à un détecteur de fluorescence (FLD), afin d’identifier et de quantifier les bisphénols.
NOTE            Sous réserve de validation par le laboratoire, cette méthode peut également être utilisée pour d’autres bisphénols.

Usnje - Določevanje celotne vsebnosti nekaterih bisfenolov (ISO 11936:2023)

Ta dokument določa metodo za določanje skupne vsebnosti naslednjih bisfenolov (ki jih je mogoče izvleči s topili):
–   bisfenol A
–   bisfenol B
–   bisfenol F
–   bisfenol S
Ta metoda zahteva uporabo tekočinske kromatografije (LC) z masnim spektrometrom s trojnim kvadrupolom (MSMS) ali detektorjem z diodnim nizom (DAD) ali FLD za identifikacijo bisfenolov in ugotavljanje njihove količine.

General Information

• Status: Published
• Publication Date: 25-Jul-2023
• 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: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 26-Jul-2023
• Due Date: 16-Apr-2024
• Completion Date: 26-Jul-2023
• Ref Project: SIST EN ISO 11936:2023 - Leather - Determination of total content of certain bisphenols (ISO 11936:2023)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2023
Usnje - Določevanje celotne vsebnosti nekaterih bisfenolov (ISO 11936:2023)
Leather - Determination of total content of certain bisphenols (ISO 11936:2023)
Leder - Bestimmung des Gesamtgehalts von einzelnen Bisphenolen (ISO 11936:2023)
Cuir - Détermination de la teneur totale en certains bisphénols (ISO 11936:2023)
Ta slovenski standard je istoveten z: EN ISO 11936:2023
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 11936
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2023
EUROPÄISCHE NORM
ICS 59.140.30
English Version
Leather - Determination of total content of certain
bisphenols (ISO 11936:2023)
Cuir - Détermination de la teneur totale en certains Leder - Bestimmung des Gesamtgehalts von einzelnen
bisphénols (ISO 11936:2023) Bisphenolen (ISO 11936:2023)
This European Standard was approved by CEN on 23 June 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11936:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11936:2023) 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 January 2024, and conflicting national standards shall
be withdrawn at the latest by January 2024.
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/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 11936:2023 has been approved by CEN as EN ISO 11936:2023 without any modification.

INTERNATIONAL ISO
STANDARD 11936
IULTCS
IUC 42
First edition
2023-07
Leather — Determination of total
content of certain bisphenols
Cuir — Détermination de la teneur totale en certains bisphénols
Reference numbers
ISO 11936:2023(E)
IULTCS/IUC 42:2023(E)
ISO 11936:2023(E)
IULTCS/IUC 42:2023(E)
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 11936:2023(E)
IULTCS/IUC 42:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Reagents . 2
7 Preparation of test sample and test pieces . 3
8 Procedure .3
8.1 Extraction . 3
8.2 Instrumental analysis . 4
9 Expression of results . 4
9.1 Calculation without internal standard . 4
9.2 Calculation with internal standard . 4
9.3 Calculation of the results of a sum . 5
10 Precision . 5
11 Test report . 5
Annex A (informative) Chromatographic analysis operating parameters for LC-MS/MS .6
Annex B (informative) Chromatographic analysis operating parameters for LC-UV, LC-DAD
or LC-FLD . 8
Annex C (informative) Chromatographic analysis operating parameters for LC-MS.9
Annex D (informative) Precision: reliability of the method .10
iii
ISO 11936:2023(E)
IULTCS/IUC 42:2023(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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at  www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
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, in accordance with
the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
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 11936:2023(E)
IULTCS/IUC 42:2023(E)
Introduction
This document includes a procedure for analysing certain bisphenols using liquid chromatography (LC)
equipment. With this analytical method, bisphenol A, bisphenol B, bisphenol F and bisphenol S can be
determined.
In the leather industry, bisphenol F can be an impurity in synthetic tanning agents. Bisphenol S is a
monomer that is used to manufacture synthetic tanning agents, which can lead to residues in the final
product.
Bisphenol A is an endocrine disruptor for environmental organisms. Bisphenol A is a synthetic organic
chemical primarily used as a monomer in the manufacture of high-performance plastics, other
polymers, such as resins, and in the colour developer for thermoprint paper. Bisphenol B is similar to
bisphenol A and is used in the manufacture of plastics and resins.
v
ISO 11936:2023(E)
INTERNATIONAL STANDARD
IULTCS/IUC 42:2023(E)
Leather — Determ
...