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GB/T 5121.3-2008: Methods for chemical analysis of copper and copper alloys -- Part 3: Determination of lead content
Status: Valid GB/T 5121.3: Evolution and historical versions
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| GB/T 5121.3-2008 | English | 279 |
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Methods for chemical analysis of copper and copper alloys -- Part 3: Determination of lead content
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GB/T 5121.3-2008
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| GB/T 5121.3-1996 | English | 279 |
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Copper and copper alloys--Determination of lead content
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GB/T 5121.3-1996
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| GB/T 5121.3-1985 | English | RFQ |
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Methods for chemical analysis of copper--The flame atomic absorption spectrophotometric method for the determination of lead content
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GB/T 5121.3-1985
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PDF similar to GB/T 5121.3-2008
Basic data | Standard ID | GB/T 5121.3-2008 (GB/T5121.3-2008) | | Description (Translated English) | Methods for chemical analysis of copper and copper alloys -- Part 3: Determination of lead content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 12,142 | | Date of Issue | 2008-06-17 | | Date of Implementation | 2008-12-01 | | Older Standard (superseded by this standard) | GB/T 5121.3-1996; GB/T 13293.7-1991 | | Adopted Standard | ISO 4749-1984, MOD | | Regulation (derived from) | National Standard Approval Announcement 2008 No.10 (Total No.123) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for determination of copper and copper alloy lead content. This method is suitable for the determination of copper and copper alloy lead content. Measuring range: 0. 00010% to 0. 0015%. Method Two flame-atomic absorption spectrometry method for the determination of the method specified copper and copper alloy lead content. This method is suitable for the determination of copper and copper alloy lead content. Measuring range: > 0. 0015% to 5. 00%. | GB/T 5121.3-2008: Methods for chemical analysis of copper and copper alloys -- Part 3: Determination of lead content
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Methods for chemical analysis of copper and copper alloys Part 3. Determination of lead content
ICS 77.120.30
H13
National Standards of People's Republic of China
Replacing GB/T 5121.3-1996
Partially replace GB/T 13293.7-1991
Copper and copper alloys -
Part 3. Determination of lead content
(ISO 4749. 1984, Copperaloys-Determinationofleadcontent-
Flameatomicabsorptionspectrometricmethod, MOD)
Posted 2008-12-01 2008-06-17 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 5121 "Copper and copper alloy chemical analysis method" a total of 27 sections.
--- Part 1. Determination of copper content;
--- Part 2. Determination of phosphorus content;
--- Part 3. Determination of lead content;
--- Part 4. Carbon, Determination of sulfur content;
--- Part 5. Determination of nickel content;
--- Part 6. Determination of bismuth content;
--- Part 7. Determination of arsenic content;
--- Part 8. Determination of oxygen content;
--- Part 9. Determination of iron content;
--- Part 10. Determination of tin content;
--- Part 11. Determination of zinc content;
--- Part 12. Determination of antimony content;
--- Part 13. Determination of aluminum content;
--- Part 14. Determination of manganese content;
--- Part 15. Determination of cobalt content;
--- Part 16. Determination of chromium content;
--- Part 17. Determination of beryllium content;
--- Part 18. Determination of magnesium content;
--- Part 19. Determination of silver content;
--- Part 20. Determination of zirconium content;
--- Part 21. Determination of titanium content;
--- Part 22. Determination of cadmium content;
--- Part 23. Determination of silicon content;
--- Part 24. selenium, tellurium content was measured;
--- Part 25. Determination of boron content;
--- Part 26. Determination of mercury content;
--- Part 27. Inductively coupled plasma atomic emission spectrometry.
This is Part 3.
This section includes a method, Method II.
The second method to modify the part using ISO 4749. 1984 "Determination of copper alloys --- --- lead content by flame atomic absorption spectrophotometry" in
The main technical content of ISO 4749. 1984 the same structure does not correspond exactly to write. Specific technical difference in Appendix A, Appendix B.
This Part replaces GB/T 5121.3-1996 "Copper and copper alloys - Determination of lead content" and GB/T 13293.7-
1991 "Methods for chemical analysis of high purity copper cathode Zeeman effect electrothermal atomic absorption spectrometric method for the determination of iron, cobalt, lead content."
This portion of the GB/T 5121.3-1996, GB/T 13293.7-1991 The main changes are as follows.
--- One method of GB/T 13293.7-1991 the revision. Measured by the scope of 0.0001% ~ 0.002% revised to
0.0001% to 0.0015% supplemented with quality assurance and control provisions, increasing the precision of the terms;
--- Second method is GB/T 5121.3-1996 revision, complementing the quality assurance and control provisions, increasing the precision of the terms.
This section in Appendix A, Appendix B is an informative annex.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
This section Chinalco Luoyang Copper Co., Ltd., Beijing General Research Institute of Mining and Metallurgy, China Nonferrous Metals Industry is responsible Institute of Standards Metrology and Quality
Drafted.
A method in this section was drafted by Beijing General Research Institute of Mining and Metallurgy.
A method in this section by the Jinchuan Group Co., Ltd., Guangzhou Nonferrous Metal Research Institute participated in the drafting.
The main drafters of this section a method. Feng advanced Yangsu Zhi, Feng Yu Qing, high dielectric level, Sun Shuyuan.
The main part of a method of verification of people. Zhao Quanmin, Lvqing Cheng, Dai Fengying, Lin Shan, Liu Tianping.
This section Method Two Chinalco Luoyang Copper Co. drafted.
The second method section by the Institute Daye Nonferrous Metals Corporation, Tongling Nonferrous Metals Institute participated in the drafting.
Method Two main drafters of this section. Zhang Xing, Liu Xia, Sun Bao.
This section Method two main certifier. Liu Yan, Luo Yongmei, Li Yu.
This part of the standard replaces the previous editions are.
--- GB/T 5121.3-1996, GB/T 13293.7-1991.
Copper and copper alloys -
Part 3. Determination of lead content
Method 1 a Zeeman effect electrothermal atomic absorption spectrometry
1.1 Scope
This method specifies the method for determination of copper and copper alloy of lead content.
This method is applicable to the determination of copper and copper alloy of lead content. Measurement range. 0.00010% to 0.0015%.
1.2 Principle of the method
Sample was dissolved in nitric acid, a volume of the test solution injected into the electrothermal atomizer with Zeeman effect atomic absorption spectrometer
283.3nm wavelength measuring the absorbance of lead, lead mass fraction calculated by working curve method.
1.3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. experiment
The utensils were soaked 12h, washed thoroughly with water and nitric acid (1.3.3).
1.3.1 Copper (Cu mass fraction ≥99.99%, lead content < 0.00005%).
1.3.2 nitric acid (1 + 1) BVⅢ.
1.3.3 nitric acid (1 + 19).
1.3.4 copper substrate solution (100g/L). Weigh 20.00g copper (1.3.1) into 400mL beaker was added in 160mL nitric acid
(1.3.3), Leng Rong. After the reaction was stopped by intense, low heat until completely dissolved, oxides of nitrogen purge boiling, cooled to room temperature. Moved
200mL volumetric flask, dilute with water to volume, and mix.
1.3.5 Lead standard stock solution. Weigh 0.2000g metallic lead (Pb mass fraction ≥99.95%) placed in 150mL beaker,
20mL of nitric acid (1.3.2), the cover sheet pan, on low heat until completely dissolved, cooled to room temperature. Transferred to 500mL volumetric flask, diluted with water
To the mark, and mix. This solution 1mL containing 400μg lead.
1.3.6 Lead standard solution A. Pipette 5.00mL lead standard stock solution (1.3.5) in 200mL volumetric flask, dilute to the mark with water,
Mix well. This solution 1mL containing 10μg lead.
1.3.7 Lead standard solution B. Pipette 10.00mL lead standard solution A (1.3.6) in 100mL volumetric flask, dilute to the mark with water, mix
uniform. This solution 1mL containing 1μg lead.
1.4 Instrument
1.4.1 graphite furnace atomic absorption spectrometer. with electrothermal atomizer, micro sampler or autosampler, lead hollow cathode lamp and Zeeman effect
Background correction shall devices.
1.4.2 The graphite furnace atomic absorption spectrometer should meet the following specifications.
--- Lowest sensitivity. curve used in the arithmetic series of standard solution of greatest concentration, absorbance should not be less than 0.300.
--- Correlation coefficient curve is not less than 0.995.
--- Low precision requirements. the highest concentration of standard solution, the absorbance measured 10 times, calculate the mean and standard deviation. The standard
Standard deviation should not exceed 1.5% of the average absorbance. The lowest concentration of standard solutions (not zero concentration standard solution
Solution), 10 times the absorbance measured, calculating the standard deviation. The standard deviation should not exceed the average absorbance of the highest concentration of the standard
0.5% of the value.
1.5 Sample
Sample processed into crumb-like.
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