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Determination of lead, cadmium content in leather and leather products for import and export. Fire atomic absorption spectrometric method
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Basic data
| Standard ID | SN/T 1653-2005 (SN/T1653-2005) |
| Description (Translated English) | Determination of lead, cadmium content in leather and leather products for import and export. Fire atomic absorption spectrometric method |
| Sector / Industry | Commodity Inspection Standard (Recommended) |
| Classification of Chinese Standard | Y45 |
| Classification of International Standard | 59.140.01 |
| Word Count Estimation | 6,660 |
| Date of Issue | 2005-09-30 |
| Date of Implementation | 2006-05-01 |
| Quoted Standard | GB/T 6682 |
| Regulation (derived from) | Industry standard filing Notice 2005 No. 12 (No. 72 overall) |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China |
| Summary | This standard specifies the import and export of leather and leather products of lead, cadmium content Flame atomic absorption spectrometric method. This standard applies to leather and leather products of lead, cadmium content. |
SN/T 1653-2005: Determination of lead, cadmium content in leather and leather products for import and export. Fire atomic absorption spectrometric method
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Determination of lead, cadmium content in leather and leather products for import and export. Fire atomic absorption spectrometric method
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Determination of lead and cadmium content in leather and leather products for import and export
Flame atomic absorption spectrometry
Released on September 15,.2005
2006-05-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted. Zhejiang Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Yu Xufeng, Shen Bing, Shen Xuanming, Xiao Fei, Ye Yurong, Gan Defen.
This standard is the first industry standard for entry-exit inspection and quarantine.
Determination of lead and cadmium content in leather and leather products for import and export
Flame atomic absorption spectrometry
1 Scope
This standard specifies the method for the determination of lead and cadmium in imported and exported leather and leather products by flame atomic absorption spectrometry.
This standard applies to the determination of lead and cadmium content in imported and exported leather and leather products.
2 Normative references
The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all
Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study
Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.
GB/T 6682 Analytical laboratory water specifications and test methods
3 Method summary
After the sample is subjected to microwave digestion, it is introduced into an atomic absorption spectrophotometer to atomize and absorb lead 283.3 nm resonance line and cadmium.
228.8nm resonance line, within a certain concentration range, the absorption value is proportional to the lead and cadmium content, and compare it with lead and cadmium standard series to determine the sample.
Lead and cadmium content.
4 reagents and materials
The test water should meet the requirements of GB/T 6682 secondary water.
4.1 Nitric acid. excellent grade pure.
4.2 Nitric acid solution. 1+99.
4.3 Nitric acid solution. 1+9.
4.4 Lead standard stock solution. 1000μg/mL.
4.5 Cadmium standard stock solution. 1000μg/mL.
4.6 Lead standard working solution. Dilute the above stock solution (4.4) with nitric acid solution (4.2) to prepare a standard solution of 50 μg/mL.
4.7 Cadmium Standard Working Solution. Dilute the above stock solution (4.5) with nitric acid solution (4.2) to prepare a standard solution of 10 μg/mL.
5 instruments
The glass container and the digestion tank used were all soaked in a nitric acid solution (4.3) for more than 24 hours, rinsed with deionized water, dried, and set aside.
5.1 Flame atomic absorption spectrophotometer with lead and cadmium hollow cathode lamps. See Appendix A for instrument operating conditions.
5.2 Microwave digestion system (with pressure control system). The sample digestion conditions are. pressure 0.5MPa, 1min; pressure 3.0MPa,
4min.
5.3 Temperature control heating plate.
6 sample preparation
Approximately 10 g of a representative sample was taken and cut into small pieces having a side length of about 5 mm × 5 mm, mixed, and placed in a sample bottle to be tested.
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