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| SN/T 2267-2009 | English | 359 |
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Determination of cadmium in rubber and rubber products. Atomic absorption spectrometry
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SN/T 2267-2009
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PDF similar to SN/T 2267-2009
Basic data | Standard ID | SN/T 2267-2009 (SN/T2267-2009) | | Description (Translated English) | Determination of cadmium in rubber and rubber products. Atomic absorption spectrometry | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G40 | | Classification of International Standard | 83.060 | | Word Count Estimation | 9,965 | | Date of Issue | 2009-02-20 | | Date of Implementation | 2009-09-01 | | Quoted Standard | GB/T 602; GB/T 6379.2; GB/T 6682; GB/T 15340 | | Regulation (derived from) | 2009 No. 5 (total 113) Chinese industry standard filing Announcements | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the flame atomic absorption spectrometry raw rubber, vulcanized rubber and its products mix and cadmium approach. This standard applies to raw rubber, rubber compound and vulcanized rubber and its products Determination of cadmium content, determination range 8mg/kg ~ 3000mg/kg. | SN/T 2267-2009: Determination of cadmium in rubber and rubber products. Atomic absorption spectrometry
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Determination of cadmium in rubber and rubber products.Atomic absorption spectrometry
Exit inspection and quarantine industry standard book People's Republic of China
Rubber - Determination of cadmium content in its products
Atomic Absorption Spectrometry
Posted 2009-02-20
2009-09-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A, Appendix B, Appendix C are informative appendices.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Guangdong Entry-Exit Inspection and Quarantine, Shenzhen People's Republic of China
Bureau, People's Republic of China Tianjin Exit Inspection and Quarantine.
The main drafters of this standard. Liuchong Hua, Zhong Zhiguang, Zhou Xiaoli Shen Xiao Luan, Chen Xiangyang, Shao Ronghui, Chenpei Ling, Jing.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Rubber - Determination of cadmium content in its products
Atomic Absorption Spectrometry
Warning --- the use of this standard should have practical experience in regular laboratory work. This standard does not point out all possible security
problem. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions of the relevant provisions of the State.
1 Scope
This standard specifies the flame atomic absorption spectrometry raw rubber, rubber compounds and vulcanized rubber products and cadmium content.
This standard applies to raw rubber, rubber compounds and vulcanized rubber Determination of cadmium content in its products, the measurement range of 8mg/kg ~
3000mg/kg.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Preparation of standard solution of GB/T 602 Determination of impurities in chemical reagents
GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat
Of the basic methods of reproduction
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 15340 natural, synthetic rubber raw sampling and sample preparation method
3 Method summary
A sample was concentrated nitric acid, hydrogen peroxide or a mixed solvent by microwave digestion followed by the addition of concentrated sulfuric acid, hydrogen peroxide is heated by a hot plate wet
Digestion, the decomposed solution by flame atomic absorption spectrometry analysis at 228.8nm wavelength determination, cadmium determined in accordance with external standard curve
Content elements.
4 Reagents
Unless otherwise indicated in the analysis using only analytical reagents, test water should be consistent with GB/T 6682 provisions tertiary water requirements.
4.1 nitric acid (ρ = 1.42g/mL).
4.2 nitric acid (1 + 9).
4.3 sulfate (ρ = 1.84g/mL).
4.4 Hydrogen peroxide (ρ = 1.10g/mL).
4.5 Cadmium standard solution (1000mg/L). according to GB/T 602 formulated or direct purchase of certified reference materials.
4.6 cadmium standard stock solution (100μg/mL). lessons 10.0mL cadmium standard solution (4.5) in 100mL flask, with nitric acid (4.2)
Dilute to volume, and mix. This solution 1mL containing cadmium 100μg.
4.7 Cadmium series of standard solution. Pipette 0mL, 0.1mL, 0.2mL, 0.5mL, 1.0mL cadmium standard stock solution (4.6) to
Set 100mL flask, after using nitric acid (4.2) diluted to the mark, and mix. This series of standard solution of cadmium concentrations were. 0μg/mL,
0.1μg/mL, 0.2μg/mL, 0.5μg/mL, 1.0μg/mL. Cadmium series of standard working solution at room temperature 15 ℃ ~ 25 ℃ in the preservation, have
Valid for one month.
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