Detail of GB/T 26125-2011

Introduction of GB/T 26125-2011

Electrical and electronic products - Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) 1 Scope This standard specifies the determination of the levels of lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr(VI)), and two types of brominated flame retardants, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) contained in electrotechnical products. This standard refers to the sample as the object to be processed and measured. The nature of the sample and the manner in which it is acquired is defined by the entity carrying out the tests and not by this standard. Note 1: Further guidance on obtaining representative samples from finished electronic products to be tested for levels of regulated substances may be found in IEC/PAS 62596: 2009[1]. It is noted that the selection of the sample may affect the interpretation of the test results. This standard does not determine: ——the definition of a “unit” or “homogenous material” as the sample; ——the disassembly procedure employed for obtaining a sample; ——assessment procedures. Note 2: Further guidance on assessment procedures may be found in IEC/TR 62476: 2009[2]. 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. GB/T 27025 General requirements for the competence of testing and calibration laboratories (GB/T 27025—2008，ISO/IEC 17025: 2005, IDT) ISO/IEC Guide 98: 1995 Guide to the expression of uncertainty in measurement ISO 3696 Water for analytical laboratory use - Specification and test methods ISO 5961 Water quality - Determination of cadmium by atomic absorption spectrometry 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 analyte substance to be measured 3.1.2 calibrant calibration standard substance in solid or liquid form with known and stable concentration(s) of the analyte(s) of interest used to establish instrument response (calibration curve) with respect to analyte(s) concentration(s) 3.1.3 calibration blank substance identical in form and matrix composition to the calibrant(s) but containing no analyte(s) 3.1.4 certified reference material CRM reference material, accompanied by a certificate, one or more of whose properties are certified by a procedure which establishes traceability to an accurate realization of the unit in which the property values are expressed, and for which each certified value is accompanied by an uncertainty at a stated level of confidence [ISO Guide 30][3] 3.1.5 digestate solution obtained after completion of sample digestion process 3.1.6 ectronic assembly group of components, at least one of which is an electronic device, but in which individual parts may be replaced without damage to the assembly Example: Group of components mounted on a printed wiring board. [GB 14536.1-2008, Definition H.2.5.9][4]

Contents of GB/T 26125-2011

Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 4 Test methods - Overview 5 Mechanical sample preparation 6 Screening by X-ray fluorescence spectrometry (XRF) 7 Determination of mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS 8 Determination of lead and cadmium in polymers by ICP-OES, ICP-MS and AAS 9 Determination of lead and cadmium in metals by ICP-OES, ICP-MS and AAS 10 Determination of lead and cadmium in electronics by ICP-OES, ICP-MS and AAS Annex A (Informative) Determination of PBB and PBDE in polymers by GC-MS Annex B (Informative) Test for the presence of hexavalent chromium (Cr(VI)) in colourless and coloured corrosion-protected coatings on metals Annex C (Informative) Determination of hexavalent chromium (Cr(VI)) in polymers and electronics by the colorimetric method Annex D (informative) Practical application of screening by X-ray fluorescence spectrometry (XRF) Annex E (informative) Practical application of determination of mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS Annex F (informative) Practical application of determination of lead and cadmium in polymers by ICP-OES, ICP-MS and AAS Annex G (informative) Practical application of determination of lead and cadmium in metals by ICP-OES, ICP-MS and AAS Annex H (informative) Practical application of determination of lead and cadmium in electronics by ICP-OES, ICP-MS and AAS Bibliography