GB/T 39560.4-2021Determination of certain substances in electrical and electronic products - Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS (English PDF)

Foreword

Currently, GB/T 39560 Determination of Certain Substances in Electrical and Electronic

Products can be divided into the following parts:

--- Part 1: Introduction and Overview;

--- Part 2: Disassembly, Disjointment and Mechanical Sample Preparation;

--- Part 3-1: Screening Lead, Mercury, Cadmium, Total Chromium and Total Bromine by

X-Ray Fluorescence Spectrometry;

--- Part 4: Mercury in Polymers, Metals and Electronics by CV-AAS, CV-AFS, ICP-OES

and ICP-MS;

--- Part 5: Cadmium, Lead and Chromium in Polymers and Electronics and Cadmium and

Lead in Metals by AAS, AFS, ICP-OES and ICP-MS;

--- Part 6: Polybrominated Biphenyls and Polybrominated Diphenyl Ethers in Polymers by

Gas Chromatography-Mass Spectrometry (GC-MS);

--- Part 7-1: Hexavalent Chromium - Presence of Hexavalent Chromium [Cr (VI)] in

Colorless and Colored Corrosion-Protected Coatings on Metals by the Colorimetric

Method;

--- Part 7-2: Hexavalent Chrome - Determination of Hexavalent Chrome [Cr (VI)] in

Polymers and Electronics by the Colorimetric Method;

--- Part 8: Phthalates in Polymers by Gas Chromatography-Mass Spectrometry (GC-MS),

Gas Chromatography-Mass Spectrometry Using a Pyrolyzer/Thermaldesorption

Accessory (Py/TD-GC-MS).

This Part is Part 4 of GB/T 39560.

This Part was drafted as per the rules specified in GB/T 1.1-2009.

This Part used the translation method to equivalently adopt IEC 62321-4:2013 Determination

of Certain Substances in Electrotechnical Products - Part 4: Mercury in Polymers, Metals and

Electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS.

This Part adopts the amendments of IEC 62321-4:2013/AMD1:2017, and the clauses involved

in these amendments have been marked by vertical double lines (||) in their outer margins.

The Chinese documents that have a consistent correspondence with the international documents

normatively cited in this Part are as follows:

--- GB/T 39560.1-2020 Determination of Certain Substances in Electrical and Electronic

Products - Part 1: Introduction and Overview (IEC 62321-1:2013, IDT);

--- GB/T 39560.2-2020 Determination of Certain Substances in Electrical and Electronic

Products - Part 2: Disassembly, Disjointment and Mechanical Sample Preparation (IEC

62321-2:2013, IDT);

--- GB/T 39560.301-2020 Determination of Certain Substances in Electrical and Electronic

Products - Part 3-1: Screening Lead, Mercury, Cadmium, Total Chromium and Total

Bromine by X-Ray Fluorescence Spectrometry (IEC 62321-3-1:2013, IDT);

--- GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test Methods

(ISO 3696:1987, MOD).

This Part made the following editorial modification:

--- In order to be consistent with the existing Chinese standards, change the standard name into

Determination of Certain Substances in Electrical and Electronic Products - Part 4: Mercury

in Polymers, Metals and Electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS.

This Part was proposed by and under the jurisdiction of National Technical Committee on

Environment for Electrical and Electronic Products and Systems of Standardization

Administration of China (SAC/TC 297).

Drafting organizations of this Part: China Electronics Standardization Institute; Shenzhen Saixi

Information Technology Co., Ltd.; Lanzhou Beike Weituo Technology Co., Ltd.; Centre Testing

International Group Co., Ltd.; Guangdong Midea Air-Conditioning Equipment Co., Ltd.;

Lanzhou 3D Big Data Standardization Research Institute Co., Ltd.; China Household Electric

Appliance Research Institute; Mechanical and Electrical Products and Vehicle Testing Center

of WuXI Customs; Shimadzu (China) Co., Ltd.; Thermo Fisher Scientific (China) Co., Ltd.;

Ningbo Academy of Science & Technology for Inspection & Quarantine; China Academy of

Information and Communications Technology; Zhongxing Telecommunication Equipment

Corporation; the Fifth Electronics Research Institute of the Ministry of Industry and

Information Technology; Guangzhou Customs District Technology Center; Vkan Certification

& Testing Co., Ltd.; and Testing and Technology Center for Industrial Products of Shenzhen

Customs.

Chief drafting staffs of this Part: Cheng Tao, Gao Jian, Li Jichao, Zhang Junhua, Xing Weibing,

Cai Jin, Hu Shengwen, Chen Dongmei, Cao Yanxin, Wei Feng, Liu Dan, Wang Fei, Chen

Jianguo, Hao Xu, Wang Xian, Jiang Tao, Xiao Dahui, Zhu Jia, and Yu Shuyuan.

Determination of Certain Substances in Electrical and

Electronic Products - Part 4: Mercury in Polymers, Metals

and Electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS

WARNING - Persons using this Part should be familiar with normal laboratory practice.

This Part does not purport to address 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.

1 Scope

This Part of GB/T 39560 describes test methods for mercury in polymers, metals and electronics

by CV-AAS, CV-AFS, ICP-OES and ICP-MS.

This Part specifies the determination of the levels of mercury (Hg) contained in electrotechnical

products. These materials are polymers, metals and electronics (e.g., printed wiring boards,

fluorescent lamps, mercury switches). Batteries containing Hg should be handled as described

in [1]. The interlaboratory study has only evaluated these test methods for plastics, other matrices

were not covered.

This Part refers to the sample as the object to be processed and measured. What the sample is

or how to get to the sample is defined by the entity carrying out the tests. Further guidance on

obtaining representative samples from finished electronic products to be tested for levels of

regulated substances may be found in IEC 62321-2. It is noted that the selection and/or

determination of the sample may affect the interpretation of the test results.

This Part describes the use of four methods, namely CV-AAS (cold vapor atomic absorption

spectrometry), CV-AFS (cold vapor atomic fluorescence spectrometry) ICP-OES (inductively

coupled plasma optical emission spectrometry), and ICP-MS (inductively coupled plasma mass

spectrometry) as well as several procedures for preparing the sample solution from which the

most appropriate method of analysis can be selected by experts.

Analysis by CV-AAS, CV-AFS, ICP-OES and ICP-MS allows the determination of the target

element, mercury, with high precision (uncertainty in the low per cent range) and/or high

sensitivity (down to the µg/kg level). The test procedures described in this standard are intended

to provide the highest level of accuracy and precision for concentrations of mercury in the range

from 4 mg/kg ~ 1 000 mg/kg. The procedures are not limited for higher concentrations.

For direct analysis, using thermal decomposition-gold amalgamation in conjunction with CV-

AAS (TD(G)-AAS) can be also applied for mercury analysis without sample digestion,

although the detection limits are higher than other methods due to the reduced sample size.

2 Normative References

The following documents are essential to the application of this document. For the dated

documents, only the versions with the dates indicated are applicable to this document; for the

undated documents, only the latest version (including all the amendments) is applicable to this

document.

IEC 62321-1 Determination of Certain Substances in Electrotechnical Products - Part 1:

Introduction and Overview

IEC 62321-2 Determination of Certain Substances in Electrotechnical Products - Part 2:

Disassembly, Disjointment and Mechanical Sample Preparation

IEC 62321-3-1 Determination of Certain Substances in Electrotechnical Products - Part

3-1: Screening Test Methods - Screening of Electrotechnical Products for Lead, Mercury,

Cadmium, Total Chromium and Total Bromine Using X-ray Fluorescence Spectrometry

IEC 62554 Sample Preparation for Measurement of Mercury Level in Fluorescent Lamps

ISO 3696 Water for Analytical Laboratory Use - Specification and Test Methods

3 Terms, Definitions and Abbreviations