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
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
