Detail of GB/T 39560.1-2020

Introduction of GB/T 39560.1-2020

Determination of certain substances in electrical and electronic products — Part 1: Introduction and overview 1 Scope This part of GB/T 39560 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. It is noted that the selection of the sample may affect the interpretation of the test results. While this standard provides guidance on the disassembly procedure employed for obtaining a sample, it does not determine or specify: the level of the disassembly procedure required for obtaining a sample; the definition of a “unit” or “homogenous material” as the sample; conformity assessment procedures. Note: Further guidance on assessment procedures may be found in GB/Z 30374-2013 [2]. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions 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 78-2:1999 Chemistry - Layouts for standards - Part 2: Methods of chemical analysis) ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories 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 electronics material used in electrical or electronic equipment that is not metal or plastic (e.g. ceramic) or not uniform in composition throughout and cannot be practically disassembled to individual discrete materials Example: Resistors, capacitors, diodes, integrated circuits, hybrids, application-specific integrated circuits, wound components, relays and their materials. Note: Electronics may contain polymer materials, such as conductive adhesives, semiconductor devices with resin packaging (generally without pins), etc., or do not contain polymer materials, such as electronic glass devices, electronic ceramic devices, etc. 3.1.3 field replaceable unit part, component or subassembly that is easily removed (mechanically disjointed) using ordinary tools Note: “Easily removed” means using ordinary tools to perform such functions as screwing or disconnecting, and only without irreversibly destroying the unit. [IEC Guide 114:2005, Definition 3.7] [3] 3.1.4 matrix substance or mixture and its form or state in which analyte is embedded or to which analyte is attached 3.1.5 performance-based measurement system set of processes wherein the data needs, mandates or limitations of a program or project are specified, serving as criteria for selecting appropriate methods to meet those needs in a cost-effective manner Note: The criteria may be published in regulations, technical guidance documents, permits, work plans or enforcement orders. 3.1.6 precision closeness of agreement between independent test results obtained under stipulated conditions 3.1.7 reference material material, sufficiently homogeneous and stable with reference to specified properties, which has been established to be fit for its intended use in measurement or in examination of nominal properties 3.1.8 repeatability precision under repeatability conditions [GB/T 6379.1-2004, definition 3.13] [1] 3.1.9 reproducibility precision under reproducibility conditions [GB/T 6379.1-2004, definition 3.17] [1] 3.1.10 screening analytical procedure to determine the presence or absence of substances in the representative part or section of a product, relative to the value or values chosen as the criterion for presence, absence or further testing Note: If the screening method produces values that are not conclusive, then additional analysis or other follow-up actions may be necessary to make a final presence/absence decision. 3.2 Abbreviations For the purposes of this document, the following abbreviations apply. AAS: Atomic Absorption Spectrometry C-IC: Combustion-Ion Chromatography CV-AAS: Cold Vapour Atomic Absorption Spectrometry CV-AFS: Cold Vapour Atomic Fluorescence Spectrometry EPA: Environmental Protection Agency FRU: Field Replaceable Unit GC-MS: Gas Chromatography-Mass Spectrometry GLP: Good Laboratory Practice HPLC-UV: High Performance Liquid Chromatography-Ultraviolet IC: Ion Chromatography IAMS: Ion Attached Mass Spectrometry ICP-MS: Inductively Coupled Plasma Mass Spectrometry ICP-OES: Inductively Coupled Plasma Optical Emission Spectrometry IS: Internal Standard IUPAC: International Union of Pure and Applied Chemistry LOD: Limit of Detection LOQ: Limit of Quantification; MDL: Method Detection Limit PBB: Polybrominated Biphenyl PBDE: Polybrominated Diphenyl Ether PBMS: Performance-Based Measurement System PWB: Printed Wiring Board QC: Quality Control UV-VIS: Ultraviolet-Visible Spectroscopy XRF: X-Ray Fluorescence Spectroscopy

Contents of GB/T 39560.1-2020

Foreword II 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions 3.2 Abbreviations 4 Test methods – Overview 4.1 Field of application 4.2 Sample 4.3 Test methods – Flow chart 4.4 Quality assurance and control 4.5 Blank solution 4.6 Adjustment to the matrix 4.7 Limits of detection (LOD) and limits of quantification (LOQ) 4.8 Test report 4.9 Alternative test methods Annex A (Informative) Limit of detection (LOD) or method detection limit (MDL) – Example of calculation Bibliography Figure 1 Flow chart of the test methods Table 1 Overview of typical screening and verification testing procedure elements – Preparation Table 2 Overview of typical screening and verification testing procedure elements – Substance type Table A.1 Experimental results Table A.2 Students t-value (t-statistic) Table A.3 Calculation results