SN/T 2003: Evolution and historical versions
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| SN/T 2003-2007 | English | RFQ |
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Mediterranean fruit fly quarantine and identification method PCR.
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SN/T 2003-2007
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| SN/T 2003.1-2005 | English | 239 |
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Determination of lead, mercury, cadmium, chromium, and bromine in the electrical and electronic products - Part 1: X-ray fluorescence spectroscopy qualitative screening method
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SN/T 2003.1-2005
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PDF similar to SN/T 2003-2007
Basic data | Standard ID | SN/T 2003-2007 (SN/T2003-2007) | | Description (Translated English) | Mediterranean fruit fly quarantine and identification method PCR. | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G04;L04 | | Date of Implementation | 7/1/2008 | | Issuing agency(ies) | General Administration of Customs | SN/T 2003.1-2005: Determination of lead, mercury, cadmium, chromium, and bromine in the electrical and electronic products - Part 1: X-ray fluorescence spectroscopy qualitative screening method
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Determination of lead, mercury, cadmium, chromium, and bromine in the electrical and electronic products - Part 1. X-ray fluorescence spectroscopy
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Determination of lead, mercury, cadmium, chromium and bromine in electrical and electronic products
Part 1. X-ray fluorescence spectrometric qualitative screening
Released on July 17,.2005
2006-01-18 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
This part is the first part of SN/T 2003.
Appendix A of this section is an informative annex.
This part is proposed and managed by the National Certification and Accreditation Administration.
This part was drafted by the Shenzhen Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Guangdong Entry-Exit Inspection and Quarantine Bureau
Jilin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China participated in the drafting.
The main drafters of this section. Liu Xianjie, Liu Zhihong, Wu Jingwu, Liu Li, Song Wuyuan, Ronghui, Li Shuhua, Zhang Zhufu.
This section is the first industry standard for entry-exit inspection and quarantine.
Determination of lead, mercury, cadmium, chromium and bromine in electrical and electronic products
Part 1. X-ray fluorescence spectrometric qualitative screening
1 Scope
This section specifies the wavelength-dispersive X-ray fluorescence spectrometric screening method for lead, chromium, mercury, cadmium and bromine in electrical and electronic products.
This section applies to the qualitative screening of lead, chromium, mercury, cadmium and bromine in electrical and electronic products.
2 Normative references
The terms in the following documents become the provisions of this section by reference to this part of SN/T 2003. Quotations with dated
The subsequent amendments (excluding the contents of the errata) or amendments do not apply to this section. However, it is encouraged to
The parties to the discussion examined whether the latest versions of these documents could be used. For undated references, the latest edition applies to this
section.
GB/T 16597 General rules of ray fluorescence spectrometry
3 Method summary
After the sample is prepared, it is determined by X-ray fluorescence spectrometry under the qualitative screening conditions of each element, and determined according to the characteristic peak of the element.
Whether the element to be detected exists.
4 reagents and materials
4.1 Boric acid (H3BO3). Analytically pure, baked at 105 ° C for 1 h, placed in a desiccator for storage.
4.2 Methane argon mixed gas (1+9).
5 instruments
5.1 Wavelength Dispersive X-ray Fluorescence Spectrometer. Meets the requirements of GB/T 16597, 铑 target X-ray tube.
5.2 Grinder.
5.3 Metal cutting machine.
5.4 Tablet press. pressure is not less than 400kN.
6 sample preparation
6.1 Uniform material sample
It is cut by a cutting machine or mechanically broken into a size of Φ20mm~Φ40mm, and directly measured by X-ray fluorescence spectrometer.
6.2 Non-uniform materials and smaller size samples
Grinded by mechanical crushing and grinding machine to make a powder sample with a particle size of not more than 1mm. After mixing, sample with a boric acid substrate (sample thickness)
The degree is not less than 1mm) and the pressure is 300kN.
7 determination
After the instrument is stable, the prepared sample is determined according to qualitative screening conditions (see Appendix A), and the result is determined whether lead is present or not.
The characteristic peaks of chromium, mercury, cadmium and bromine are expressed.
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