EN ISO 17072-2:2011

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Leder - Chemische Bestimmung des Metallgehaltes - Teil 2: Gesamtmetallgehalt (ISO 17072-2:2011)Cuir - Détermination chimique de la teneur en métal - Partie 2: Teneur totale en métaux (ISO 17072-2:2011)Leather - Chemical determination of metal content - Part 2: Total metal content (ISO 17072-2:2011)59.140.30Usnje in krznoLeather and fursICS:Ta slovenski standard je istoveten z:EN ISO 17072-2:2011SIST EN ISO 17072-2:2011en,fr,de01-november-2011SIST EN ISO 17072-2:2011SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 17072-2
February 2011 ICS 59.140.30 English Version
Leather - Chemical determination of metal content - Part 2: Total metal content (ISO 17072-2:2011)
Cuir - Détermination chimique de la teneur en métal -Partie 2: Teneur totale en métaux (ISO 17072-2:2011)
Leder - Chemische Bestimmung des Metallgehaltes - Teil 2: Gesamtmetallgehalt (ISO 17072-2:2011) This European Standard was approved by CEN on 12 February 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17072-2:2011: ESIST EN ISO 17072-2:2011

Reference numberISO 17072-2:2011(E)IULTCS/IUC 27-2:2011(E)© ISO 2011
INTERNATIONAL STANDARD ISO17072-2IULTCS/IUC27-2First edition2011-02-15Leather — Chemical determination of metal content — Part 2: Total metal content Cuir — Détermination chimique de la teneur en métal — Partie 2: Teneur totale en métaux
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ISO 17072-2:2011(E) IULTCS/IUC 27-2:2011(E) © ISO 2011 – All rights reserved iii Contents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Principle.2 4 Reagents.2 5 Apparatus and materials.2 6 Sampling and sample preparation.3 7 Instrumental procedure.4 7.1 Analysis by ICP, AAS and SFA.4 7.1.1 ICP.4 7.1.2 AAS.4 7.2 Analysis by hydride technique.5 7.3 Analysis by SFA technique.5 8 Calculation and expression of results.5 9 Test report.5 Annex A (informative)
Interlaboratory test results.6 Bibliography.7 SIST EN ISO 17072-2:2011

ISO 17072-2:2011(E) IULTCS/IUC 27-2:2011(E) iv © ISO 2011 – All rights reserved 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO 17072-2 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, in collaboration with the Chemical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUC Commission, IULTCS), in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This method is technically similar to the method in IUC 27-2. 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. ISO 17072 consists of the following parts, under the general title Leather — Chemical determination of metal content: ⎯ Part 1: Extractable metals ⎯ Part 2: Total metal content SIST EN ISO 17072-2:2011

INTERNATIONAL STANDARD ISO 17072-2:2011(E)IULTCS/IUC 27-2:2011(E) © ISO 2011 – All rights reserved 1 Leather — Chemical determination of metal content — Part 2: Total metal content 1 Scope This part of ISO 17072 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), or inductively coupled plasma/mass spectrometry (ICP/MS), or 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) The quantification limit of total lead is 8 mg/kg (see Annex A). This part of ISO 17072 is not applicable to chromium-tanned leathers. In this case, ISO 5398-1, or
ISO 5398-2, or ISO 5398-3, or ISO 5398-4 are used. 2 Normative references The following referenced documents are indispensable for the application 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 3696:1987, Water for analytical laboratory use — Specification and test methods SIST EN ISO 17072-2:2011

ISO 17072-2:2011(E) IULTCS/IUC 27-2:2011(E) 2 © ISO 2011 – All rights reserved ISO 4044, Leather — Chemical tests — Preparation of chemical test samples 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 metals 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 62 elements ISO 17852, Water quality — Determination of mercury — Method using atomic fluorescence spectrometry EN 14602, Footwear — Test methods for the assessment of ecological criteria 3 Principle Digestion of the sample of ground leather (see ISO 4044) is carried out using a ternary acid mixture or microwave digestion until complete mineralization is achieved. The residue is redissolved with water and analysed by AAS or ICP. The results are reported on the dry matter of the leather. If sampling in accordance with ISO 2418 is not possible (e.g. leathers are from finished products like shoes or garments), details about the sampling shall be given together with the test report. 4 Reagents WARNING — As concentrated acids are used, it is imperative to use all necessary personal protective equipment. 4.1 General Unless otherwise stated, only analytical grade chemicals shall be used. All solutions are aqueous solutions. 4.2 Nitric acid, 60 % to 70 % concentration (by mass). 4.3 Sulfuric acid (H2SO4), 98 % concentration (by mass). 4.4 Perchloric acid, 60 % to 70 % concentration (by mass). 4.5 Element stock solutions, of the various metals with mass concentrations of 1 000 mg/l each. 4.6 Hydrochloric acid (HCl), 37 %. 4.7 Water, grade 3 in accordance with ISO 3696:1987. 5 Apparatus and materials 5.1 General All glassware, the analytical devices and the materials, including filters, shall be suitable for analysis of trace metals. SIST EN ISO 17072-2:2011

ISO 17072-2:2011(E) IULTCS/IUC 27-2:2011(E) © ISO 2011 – All rights reserved 3 Use normal laboratory apparatus and, in particular, the following. 5.2 Laboratory oven, capable of maintaining 102 °C ± 2 °C. 5.3 Analytical balance, with an accuracy of 0
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