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GB/T 5121.9-2008: Methods for chemical analysis of copper and copper alloys -- Part 9: Determination of iron content
Status: Valid GB/T 5121.9: Evolution and historical versions
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| GB/T 5121.9-2008 | English | 369 |
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Methods for chemical analysis of copper and copper alloys -- Part 9: Determination of iron content
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GB/T 5121.9-2008
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| GB/T 5121.9-1996 | English | 319 |
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Copper and copper alloys--Determination of iron content
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GB/T 5121.9-1996
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| GB/T 5121.9-1985 | English | RFQ |
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Methods for chemical analysis of copper--The ortho-phenanthroline photometric method for the determination of iron content
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GB/T 5121.9-1985
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PDF similar to GB/T 5121.9-2008
Basic data | Standard ID | GB/T 5121.9-2008 (GB/T5121.9-2008) | | Description (Translated English) | Methods for chemical analysis of copper and copper alloys -- Part 9: Determination of iron content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 16,164 | | Date of Issue | 2008-06-17 | | Date of Implementation | 2008-12-01 | | Older Standard (superseded by this standard) | GB/T 5121.9-1996; GB/T 13293.7-1991 | | Adopted Standard | ISO 4748-1984, MOD; ISO 1812-1976, MOD | | Regulation (derived from) | National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 alloys of iron content. This method is suitable for the determination of copper and copper alloy iron content. Measurement range: 0. 0001% to 0. 0020%. Method two 1, 10-phenanthroline spectrophotometric method for the determination of the method specified copper and copper alloys of iron content. This method is suitable for the determination of copper and copper alloy iron content. Measurement range 0. 0015% to 0. 50%. Method three dichromate method This method provides for the determination of copper and copper alloys of iron content. This method is suitable for the determination of copper and copper alloy iron content. Measuring range: > 0. 50% ~ 7. 00%. | GB/T 5121.9-2008: Methods for chemical analysis of copper and copper alloys -- Part 9: Determination of iron content
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Methods for chemical analysis of copper and copper alloys Part 9. Determination of iron content
ICS 77.120.30
H13
National Standards of People's Republic of China
Replacing GB/T 5121.9-1996
Partially replace GB/T 13293.7-1991
Copper and copper alloys -
Part 9. Determination of iron content
(ISO 4748. 1984, ISO 1812. 1976, Copperaloys-
Determinationofironcontent, 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.
Part is divided into 9 parts.
This section includes a method, Method Two, Three methods Method IV. Mass fraction of iron in 0.0015% to 0.0020% recommend arbitration
Using the method II.
This section Method Four identical with ISO 4748. 1984 "Determination of the amount of iron-copper alloy --- --- Na2EDTA titration" with international standards
Compared quasi made the following editorial changes.
--- With a decimal point instead of a comma as the decimal point in the international standard ",". ",";
--- Use the "method" instead of "this International Standard";
--- Revised international standard-Africa legal units of measurement;
--- The formula, reg number, table number to re-annotate;
--- Remove the cover of the international standards, directory, foreword and introduction.
The second method to modify the section using 1812 ISO . 1976 "Determination of iron content in copper alloys --- --- 1,10 phenanthroline spectrophotometric
Law ", on the main technical content of ISO 1812. 1976 the same structure does not correspond exactly to the preparation of the specific differences in technical standards annexed to see funding
Material Appendix A, Appendix B.
This Part replaces GB/T 5121.9-1996 "Copper and copper alloys - Determination of iron content", 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 5121.9-1996, GB/T 13293.7-1991 compared to the main changes are as follows.
--- One method of GB/T 13293.7-1991 amendment complements the quality assurance and control provisions, increasing the precision of the terms;
--- Second method is GB/T 5121.9-1996 "on the first chapter 1 1,10 phenanthroline spectrophotometry" amendment, supplement
Charge of quality assurance and control provisions, increasing the precision of the terms;
--- Third, the method GB/T 5121.9-1996 in the revised "The second method dichromate method", complementing the quality
Assurance and control provisions, increasing the precision of the terms;
--- Increased Method four, identical with the international standard ISO 4748. 1984 "copper alloy --- --- Na2EDTA Determination of iron content drops
Titration. "
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 Guangzhou Research Institute of Nonferrous Metals, Jinchuan Group Ltd participated in the drafting.
The main drafters of this section a method. Feng advanced.
The main part of a method of verification by. Daifeng Ying, Lin Shan, Liu Tianping, Zhao Quanmin, Li first super.
This section Second method, Method three Chinalco Luoyang Copper Co. drafted.
This section Second method, Method three participated in the drafting of copper plus northwest Gansu limited liability company, the aluminum Shenyang Nonferrous Metals Processing Co., Ltd.
Method Two main drafters of this section. Zhang Jinghua, Wang Hui, high-Yu Yang new generations.
This section Method two main certifier. Wang Xia, Hao Zhang, Zhaozhen Lin, Liu Yan.
Method three main drafters of this section. Zhang Jinghua, Li Wei, Xie Liyun, Tang Su effect.
The method in this section are three main certifier. Liu Jianming Hao Zhang, Li Wenjun, Liu Yan.
This section Method IV by Chinalco Luoyang Copper Co., Ltd., Beijing General Research Institute of Mining and Metallurgy, China Nonferrous Metals Industry standard quality research metrology
Drafted.
Method four main drafters of this section. Zhang Jinghua, Lihua Chang, Yang Lijuan.
This section Method four main certifier. Fu Bin, Xia Qing beads.
This part of the standard replaces the previous editions are.
--- GB/T 5121.9-1996, GB/T 13293.7-1991.
Copper and copper alloys -
Part 9. Determination of iron content
Method 1 a Zeeman effect electrothermal atomic absorption spectrometry
1.1 Scope
This method specifies the method for determination of copper and copper alloys in the iron content.
This method is applicable to the determination of copper and copper alloy iron content. Measurement range. 0.0001% to 0.0020%.
1.2 Principle of the method
Sample dissolved in nitric acid, a volume of the test solution injected into the electrothermal atomizer with Zeeman effect atomic absorption spectrometer
248.3nm wavelength measuring the absorbance of iron, according to the working curve method to calculate the mass fraction of iron.
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 (mass fraction of copper ≥99.99%, mass fraction of iron < 0.00005%).
1.3.2 nitric acid (1 + 1) BVⅢ.
1.3.3 nitric acid (1 + 19).
1.3.4 hydrochloric acid (1 + 1) BVⅢ.
1.3.5 copper substrate solution (100g/L). Weigh 20.00g copper (1.3.1) into 400mL beaker was added in 160mL nitric acid
(1.3.2), 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.
1.3.6 Iron standard stock solution. Weigh 0.2000g metallic iron (iron mass fraction ≥99.95%) placed in 150mL beaker,
14mL of hydrochloric acid (1.3.4), 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 iron.
1.3.7 Iron Standard Solution A. Pipette 5.00mL iron standard stock solution (1.3.6) in 200mL volumetric flask, dilute to the mark with water,
Mix well. This solution 1mL containing 10μg iron.
1.3.8 Iron standard solution B. Pipette 20.00mL iron standard solution A (1.3.7) in 200mL volumetric flask, dilute to the mark with water, mix
uniform. This solution 1mL containing 1μg iron.
1.4 Instrument
1.4.1 graphite furnace atomic absorption spectrometer. with electrothermal atomizer, micro sampler or autosampler, iron 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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