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GB/T 5121.21-2008: Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content
Status: Valid GB/T 5121.21: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 5121.21-2008 | English | 169 |
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Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content
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GB/T 5121.21-2008
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| GB/T 5121.21-1996 | English | 199 |
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Copper and copperr alloys--Determination of titanium content
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GB/T 5121.21-1996
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Basic data | Standard ID | GB/T 5121.21-2008 (GB/T5121.21-2008) | | Description (Translated English) | Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 7,799 | | Date of Issue | 2008-06-17 | | Date of Implementation | 2008-12-01 | | Older Standard (superseded by this standard) | GB/T 5121.21-1996 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.10 (Total No.123) | | Issuing agency(ies)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 titanium content. This section applies to the determination of copper and copper alloy titanium content. Measuring range: 0. 050% to 0. 30%. | GB/T 5121.21-2008: Methods for chemical analysis of copper and copper alloys -- Part 21: Determination of titanium content
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Methods for chemical analysis of copper and copper alloys Part 21. Determination of titanaum content
ICS 77.120.30
H13
National Standards of People's Republic of China
Replacing GB/T 5121.21-1996
Copper and copper alloys -
Part 21. Determination of titanium content
Posted 2008-06-17
2008-12-01 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 21.
This Part replaces GB/T 5121.21-1996 "Copper and copper alloys - Determination of titanium content."
This section compared with the GB/T 5121.21-1996, the main changes are as follows.
--- Omitted "reference standard" one;
--- Original standard text format has been revised;
--- Supplementary terms of quality assurance and control, increased precision terms.
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.
This section Chinalco Luoyang Copper Co. drafted.
This part by the Beijing Nonferrous Metal Research Institute, Beijing General Research Institute of Mining and Metallurgy participated in the drafting.
The main drafters of this section. Yaoqiao Ping, Ji Haifeng, former Huai Bao.
This part certifier. Tong Jian, Liu Chunfeng, Tong Ling, Zhang Lianxiang.
This part of the standard replaces the previous editions are.
--- GB/T 5121.21-1996.
Copper and copper alloys -
Part 21. Determination of titanium content
1 Scope
This section specifies the determination of copper and copper alloys in the titanium content.
This section applies to the determination of copper and copper alloys in the titanium content. Measurement range. 0.050% to 0.30%.
2 principle of the method
Sample was dissolved in nitric acid, sulfuric acid solution, the hydrogen peroxide is added to form a yellow complex with the titanium so that, at the wavelength of the spectrophotometer
Absorbance was measured at 410nm.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 nitric acid (1 + 1).
3.2 sulfate (1 + 1).
3.3 Hydrogen peroxide (1 + 9).
3.4 Titanium standard solution. Weigh 0.1666g previously burned by 950 ℃ to constant weight and titanium dioxide (excellent pure) after cooling in a dryer,
In a dry 250mL beaker, add 30mL sulfuric acid (ρ1.84g/mL), heated to dissolve, when close to dissolve completely, adding 5g
Solubilization of ammonium sulfate, dissolved completely, and cooled to room temperature. Moved into 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL
Containing 100μg titanium.
4 Instrument
Spectrophotometer.
5 Sample
Thickness of less than 1mm debris.
Step 6 Analysis
6.1 Sample
Weigh 0.400g sample (5). Accurate to 0.0001g.
6.2 Determination of the number of
Independent secondary measurement averaged.
6.3 blank test
6.3.1 along with sample blank test with water as a reference measuring absorbance.
6.3.2 Weigh a sample, but without addition of hydrogen peroxide, other steps according to analysis, the solution for the sample solution as reference solution.
6.4 Determination
6.4.1 The sample (6.1) was placed in 150mL beaker, was added 5mL of nitric acid (3.1), cover sheet pan, heated to dissolve completely, in addition to boil
To nitrogen oxides. Washed with a little water table dish and cup wall. Added 10mL sulfuric acid (3.2), low temperature evaporation to take the white smoke of sulfur trioxide, remove
Cooled, washed with water and dish table Beibi.
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