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GBZ21274-2007 English PDF

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GBZ21274-2007: Determination of regulated substances (lead, mercury and cadmium) in electrical and electronic equipment
Status: Obsolete
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GB/Z 21274-2007English439 Add to Cart 3 days [Need to translate] Determination of regulated substances (lead, mercury and cadmium) in electrical and electronic equipment Obsolete GB/Z 21274-2007

PDF similar to GBZ21274-2007


Standard similar to GBZ21274-2007

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Basic data

Standard ID GB/z 21274-2007 (GB/z21274-2007)
Description (Translated English) Determination of regulated substances (lead, mercury and cadmium) in electrical and electronic equipment
Sector / Industry National Standard
Classification of Chinese Standard L10
Classification of International Standard 31.020
Word Count Estimation 11,163
Date of Issue 2007-12-20
Date of Implementation 2008-06-01
Regulation (derived from) ?National Standard Announcement 2007 No.13 (Total No.113)
Issuing agency(ies) Ministry of Health of the People's Republic of China
Summary This standard specifies the various types of electrical and electronic products lead, determination of cadmium, mercury. The technical guidance document applies to all types of electrical and electronic products in the lead, mercury, cadmium determination.

GBZ21274-2007: Determination of regulated substances (lead, mercury and cadmium) in electrical and electronic equipment


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GB /Z 21274-2007 Determination of regulated substances(lead, mercury and cadmium) in electrical and electronic equipment ICS 31.020 L10 National Standardization Technical Document of the People's Republic of China GB /Z21274-2007 Restricted substances in electrical and electronic products, lead, mercury, cadmium Detection method Released on.2007-12-20 General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration issued

Foreword

Appendix A of this guidance document is an informative annex. This guidance document is presented by the Environmental Standardization Technical Committee (SAC/TC297) of the National Electrical and Electronic Products and Systems. Return to the mouth. The main technical draft of this guiding technical document is. Shenzhen Institute of Metrology and Quality Inspection. This guiding technical document participated in the drafting unit. Zhejiang Fangyuan Testing Group Co., Ltd., Chengdu Product Quality Supervision and Inspection Institute, Shanghai Entry-Exit Inspection and Quarantine Bureau, China Quality Certification Center. The main drafters of this guiding technical document. Yang Wanying, Li Xiang, Huang Xiaolong, Chen Zeyong, Luo Meizhong, Li Bifang, Chen Xiaozhen, Wan Yiping, Dong Yongsheng, Zhou Yulin. This guidance document is the first release. GB /Z21274-2007 Restricted substances in electrical and electronic products, lead, mercury, cadmium Detection method

1 Scope

This guidance document specifies methods for the determination of lead, mercury, and cadmium in various electrical and electronic products. This guidance document is applicable to the determination of lead, mercury and cadmium in various electrical and electronic products. 2 Determination of lead and cadmium - Method 1. Flame atomic absorption spectrometry 2.1 Principle After the sample is ashed or acid digested, it is injected into a flame atomic absorption spectrophotometer. Within a certain concentration range, lead (Pb) and cadmium (Cd) are used. The absorption value of the sub-specific wavelength is proportional to its content, and the lead and cadmium are quantitatively analyzed compared with the standard series. The lower limit of quantification of the method. lead (Pb) 5.0 mg/kg, cadmium (Cd) 2.5 mg/kg. 2.2 Reagents and equipment 2.2.1 Reagents Unless otherwise stated, reagents that meet national or industrial standards, deionized water or water of equivalent purity (resistivity) are used. 18.2MΩ). 2.2.1.1 Nitric acid. excellent grade pure. 2.2.1.2 Hydrogen peroxide. analytically pure. 2.2.1.3 Hydrochloric acid. excellent grade. 2.2.1.4 Sulfuric acid. excellent grade pure. 2.2.1.5 Perchloric acid. excellent grade. 2.2.1.6 Hydrofluoric acid. analytically pure. 2.2.1.7 Nitric acid (1+1, by volume). Mix 1 part of nitric acid (2.2.1.1) with 1 part of water. 2.2.1.8 Mixed acid 1. Nitric acid + perchloric acid (4+1, by volume). Take 4 parts of nitric acid (2.2.1.1) and 1 part of perchloric acid (2.2.1.5) mixing. 2.2.1.9 Mixed acid 2. hydrochloric acid + nitric acid + water (2+1 + 2, volume ratio). Take 2 parts of hydrochloric acid (2.2.1.3), 1 part of nitric acid (2.2.1.1) and Mix 2 parts of water. 2.2.1.10 Mixed acid 3. nitric acid + hydrofluoric acid (1+3, volume ratio). Take 1 part of nitric acid (2.2.1.1) and 3 parts of hydrofluoric acid (2.2.1.6) mixing. 2.2.1.11 Nitric acid (2%). Mix 2 parts of nitric acid (2.2.1.1) with 65 parts of water. 2.2.1.12 Lead and cadmium standard solution. certified standard substance with a concentration of 100mg/L or 1000mg/L. 2.2.2 Equipment 2.2.2.1 Flame atomic absorption spectrophotometer with lead and cadmium hollow cathode lamps. 2.2.2.2 Muffle furnace. 2.2.2.3 Microwave digestion furnace. 2.2.2.4 Adjustable hot plate. 2.2.2.5 Low temperature pulverizer. 2.2.2.6 10,000-point balance. GB /Z21274-2007

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