1、 IEC 62321-7-1 Edition 1.0 2015-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Determination of certain substances in electrotechnical products Part 7-1: Hexavalent chromium Presence of hexavalent chromium (Cr(VI) in colourless and coloured corrosion-protected coatings on metals by the colorimetric
2、method Dtermination de certaines substances dans les produits lectrotechniques Partie 7-1: Chrome hexavalent Prsence de chrome hexavalent (Cr(VI) dans les revtements incolores et colors de protection anticorrosion appliqus sur les mtaux laide de la mthode colorimtrique IEC 62321-7-1:2015-09(en-fr) c
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20、.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62321-7-1 Edition 1.0 2015-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Determination of certain substances in electrotechnical products Part 7-1: Hexavalent c
21、hromium Presence of hexavalent chromium (Cr(VI) in colourless and coloured corrosion-protected coatings on metals by the colorimetric method Dtermination de certaines substances dans les produits lectrotechniques Partie 7-1: Chrome hexavalent Prsence de chrome hexavalent (Cr(VI) dans les revtements
22、incolores et colors de protection anticorrosion appliqus sur les mtaux laide de la mthode colorimtrique INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 13.020; 43.040.10 ISBN 978-2-8322-2895-1 Registered trademark of the International Electrotechnical Commiss
23、ion Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 62321-7-1:2015 IEC 2015 CONTENT
24、S FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms, definitions and abbreviations . 7 3.1 Terms and definitions 7 3.2 Abbreviations 7 4 Reagents . 7 4.1 General . 7 4.2 Reagents 7 5 Apparatus 7 5.1 General . 7 5.2 Apparatus . 7 6 Sampling . 8 7 Boiling water extraction proced
25、ure . 8 8 Calibration . 11 8.1 Permanent calibration instruments 11 8.2 Traditional calibration instruments 11 9 Calculation 11 10 Precision . 12 11 Quality assurance and control . 12 11.1 Colorimetric instrument performance verification . 12 11.2 Limits of detection (LOD) and limits of quantificati
26、on (LOQ) 12 12 Test report . 13 Annex A (informative) International inter-laboratory study on corrosion-protected coatings Data overview 16 Bibliography 18 Figure 1 Screw body and screw head measurements . 9 Figure A.1 Concentration of chromium VI based on surface area for all samples . 16 Figure A.
27、2 Concentration of chromium VI based on surface area Expanded view between 0 g/cm 2 to 1 g/cm 2. 17 Table 1 Comparison to standard solution and interpretation of results 11 Table 2 Students t values used for calculation of method detection limit (LOD or MDL = t-statistic standard deviation (sn-1) 13
28、 Table 3 Reporting table 14 Table 4 Example of a completed reporting table . 15 IEC 62321-7-1:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DETERMINATION OF CERTAIN SUBSTANCES IN ELECTROTECHNICAL PRODUCTS Part 7-1: Hexavalent chromium Presence of hexavalent chromium (Cr(VI) in colourle
29、ss and coloured corrosion-protected coatings on metals by the colorimetric method FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to pro
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39、 the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62321-7-1 has been
40、 prepared by IEC technical committee 111: Environmental standardization for electrical and electronic products and systems. The first edition of IEC 62321:2008 was a stand-alone standard that included an introduction, an overview of test methods, a mechanical sample preparation as well as various te
41、st method clauses. This first edition of IEC 62321-7-1 is a partial replacement of IEC 62321:2008, forming a structural revision and generally replacing informative Annex B. Future parts in the IEC 62321 series will gradually replace the corresponding clauses in IEC 62321:2008. Until such time as al
42、l parts are published, however, IEC 62321:2008 remains valid for those clauses not yet re-published as a separate part. 4 IEC 62321-7-1:2015 IEC 2015 The text of this standard is based on the following documents: FDIS Report on voting 111/380/FDIS 111/393/RVD Full information on the voting for the a
43、pproval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62321 series can be found on the IEC website under the general title: Determination of certa
44、in substances in electrotechnical products. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be
45、 reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document us
46、ing a colour printer. IEC 62321-7-1:2015 IEC 2015 5 INTRODUCTION The widespread use of electrotechnical products has drawn increased attention to their impact on the environment. In many countries this has resulted in the adaptation of regulations affecting wastes, substances and energy use of elect
47、rotechnical products. The use of certain substances (e.g. lead (Pb), cadmium (Cd) and polybrominated diphenylethers (PBDEs) in electrotechnical products is a source of concern in current and proposed regional legislation. The purpose of the IEC 62321 series is therefore to provide test methods that
48、will allow the electrotechnical industry to determine the levels of certain substances of concern in electrotechnical products on a consistent global basis. WARNING Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address
49、 all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 6 IEC 62321-7-1:2015 IEC 2015 DETERMINATION OF CERTAIN SUBSTANCES IN ELECTROTECHNICAL PRODUCTS Part 7-1: Hexavalent chromium Presence of hexavalent chromiu
