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SN/T 2004.7-2006: Determination of mercury in electrical and electronic equipment. Part 7: Atomic fluorescence spectrometry
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Determination of mercury in electrical and electronic equipment. Part 7: Atomic fluorescence spectrometry
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SN/T 2004.7-2006
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Basic data | Standard ID | SN/T 2004.7-2006 (SN/T2004.7-2006) | | Description (Translated English) | Determination of mercury in electrical and electronic equipment. Part 7: Atomic fluorescence spectrometry | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | L04 | | Classification of International Standard | 31.020 | | Word Count Estimation | 10,168 | | Date of Issue | 2006-08-28 | | Date of Implementation | 2007-03-01 | | Quoted Standard | GB/T 602 | | Regulation (derived from) | ?National-accreditation-Science [2010] 50 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the electrical and electronic products of lead, cadmium atomic fluorescence spectrometric method. This standard applies to electrical and electronic products consisting of polymers, aluminum, copper, iron and zinc -based metal materials and electronic components of lead and cadmium. Measuring range in Table 1. | SN/T 2004.7-2006: Determination of mercury in electrical and electronic equipment. Part 7: Atomic fluorescence spectrometry
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Determination of mercury in electrical and electronic equipment. Part 7. Atomic fluorescence spectrometry
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Determination of lead and cadmium in electrical and electronic products
Part 7. Atomic Fluorescence Spectroscopy
Released on.2006-08-28
2007-03-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
This part is the seventh part of SN/T 2004.
Appendix A of this section is an informative annex.
This part is proposed and managed by the National Certification and Accreditation Administration.
This part is drafted by the Ningbo Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Shenzhen Entry-Exit Inspection and Quarantine Bureau, Tianjin Entry-Exit Inspection
The Inspection and Quarantine Bureau and the Liaoning Entry-Exit Inspection and Quarantine Bureau participated in the drafting.
The main drafters of this section. Chen Shaohong, Chen Jianguo, Zhu Xiaoyan, Cao Guozhou, Shi Jun, Li Quanbin, Liu Li, Liu Zhihong, Wei Hongbing, Chen Wei.
This section is the first industry standard for entry-exit inspection and quarantine.
Determination of lead and cadmium in electrical and electronic products
Part 7. Atomic Fluorescence Spectroscopy
1 Scope
This part of SN/T 2004 specifies the atomic fluorescence spectrometric method for the determination of lead and cadmium in electrical and electronic products.
This section applies to lead, cadmium in polymers, aluminum-based, copper-based, iron-based and zinc-based metallic materials and electronic components that make up electrical and electronic products.
Determination. The measurement range is shown in Table 1.
Table 1 Element measurement range unit is mg/kg
Sample material
Elemental measurement range
Lead and cadmium
Polymer and aluminum base 30~1200 1.5～200
Copper base 125~3000 -
Iron base 60 ~ 1600 1.5 ~ 500
Zinc base 50～1200 2.0～600
2 Normative references
The terms in the following documents become the provisions of this section by reference to this part of SN/T 2004. Quotations with dated
, all subsequent amendments (not including errata content) or modified versions do not apply to this section, however, encouragement is achieved according to this section
The parties to the agreement study whether the latest versions of these documents can be used. For undated references, the latest edition applies to this
section.
GB/T 602 Preparation of standard solutions for the determination of impurities in chemical reagents (GB/T 602-2002, ISO 6353-1.1982, NEQ)
3 Method summary
After the sample is digested and diluted to a certain volume, the lead ions and cadmium ions in the sample solution are respectively under certain medium conditions.
The potassium borohydride reaction forms a hydride and a gaseous component, which is carried by the carrier gas (Ar) into the atomizer, and the fluorescence is strong according to the characteristic wavelength of the element to be tested.
The content of the element was determined.
4 reagents
Unless otherwise stated, only analytically pure reagents and deionized water or water of comparable purity were used in the analysis.
4.1 Nitric acid (ρ1.42g/mL). excellent grade pure.
4.2 Hydrochloric acid (ρ1.19g/mL). excellent grade pure.
4.3 Hydrogen peroxide (30% aqueous solution).
4.4 Hydrochloric acid (1+1). hydrochloric acid (4.2) 500 mL, diluted to 1000 mL with water.
4.5 Hydrochloric acid (1+99). Hydrochloric acid (4.4) 20 mL, diluted to 1000 mL with water.
4.6 Hydrochloric acid (3+197). Hydrochloric acid (4.4) 30 mL, diluted to 1000 mL with water.
4.7 Wangshui. 3 parts of hydrochloric acid (4.2) +1 part of nitric acid (4.1).
4.8 Lean King Water (1+6). 1 part aqua regia (4.7) + 6 parts water.
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