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GB/T 4698.22-2017: Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 22: Determination of niobium content - 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry
Status: Valid GB/T 4698.22: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4698.22-2017 | English | 199 |
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Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 22: Determination of niobium content - 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry
| Valid |
GB/T 4698.22-2017
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| GB/T 4698.22-1996 | English | 159 |
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Sponge titanium, titanium and titanium alloys. Determination of niobium content. 2-(5-Bromo-2-pyridylazo)-5-Diethylaminophenol spectrophotometric method
| Obsolete |
GB/T 4698.22-1996
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Basic data | Standard ID | GB/T 4698.22-2017 (GB/T4698.22-2017) | | Description (Translated English) | Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 22: Determination of niobium content - 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.50 | | Word Count Estimation | 10,192 | | Date of Issue | 2017-09-29 | | Date of Implementation | 2018-07-01 | | 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 | GB/T 4698.22-2017: Methods for chemical analysis of titanium sponge, titanium and titanium alloys -- Part 22: Determination of niobium content - 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of titanium sponge, titanium and titanium alloys - Part 22. Determination of niobium content - 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry
ICS 77.120.50
H14
National Standards of People's Republic of China
Replacing GB/T 4698.22-1996
Sponge titanium, titanium and titanium alloys - Methods for chemical analysis
Part 22. Determination of niobium content
5-Br-PADAP spectrophotometry and
Inductively coupled plasma atomic emission spectrometry
Methods for chemical analysis of titanium nitride, titaniumandtitaniumaloys-
Part 22.Determinationofniobiumcontent-
2017-09-29 Release.2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
GB/T 4698 "titanium sponge, titanium and titanium alloy chemical analysis method" is divided into 28 parts.
--- Part 1. Determination of copper content by flame atomic absorption spectrometry;
--- Part 2. Determination of iron content 1,10-phenanthroline spectrophotometry, flame atomic absorption spectrometry and inductively coupled plasma
Atomic emission spectrometry;
--- Part 3. Determination of silicon content molybdenum blue spectrophotometry;
--- Part 4. Determination of manganese content Periodate spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 5. Determination of molybdenum content thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 6. Determination of boron content Curcumin spectrophotometry and inductively coupled plasma mass spectrometry;
--- Part 7. Determination of oxygen content, nitrogen content Inert gas melting - infrared absorption/thermal conductivity method and distillation separation - Naisler reagent spectrophotometry
Degree method
--- Part 8. Determination of aluminum content Alkaline separation - EDTA complexometric titration and inductively coupled plasma atomic emission spectrometry;
--- Part 9. Determination of tin content potassium iodate titration and inductively coupled plasma atomic emission spectrometry;
--- Part 10. Determination of chromium content ammonium ferrous sulfate titration and inductively coupled plasma atomic emission spectrometry;
--- Part 12. Determination of vanadium content ammonium ferrous sulfate titration and inductively coupled plasma atomic emission spectrometry;
--- Part 13. Determination of zirconium content EDTA titration and inductively coupled plasma atomic emission spectrometry;
--- Part 14. Determination of carbon content High-frequency combustion - infrared absorption method;
--- Part 15. Determination of hydrogen content inert gas melting infrared absorption method/thermal conductivity method;
--- Part 17. Determination of magnesium content by flame atomic absorption spectrometry;
--- Part 18. Determination of tin content by flame atomic absorption spectrometry;
--- Part 19. Determination of molybdenum content; Thiocyanate differential spectrophotometry;
--- Part 21. Determination of multi-element impurity content of atomic emission spectrometry;
--- Part 22. Determination of niobium content 5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 23. Determination of palladium content Stannous chloride - potassium iodide spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 24. Determination of nickel content dimethylglyoxime spectrophotometry and inductively coupled plasma atomic emission spectrometry;
--- Part 25. Determination of chlorine content of silver chloride spectrophotometry;
--- Part 26. Determination of tungsten and tantalum content by inductively coupled plasma atomic emission spectrometry;
--- Part 27. Determination of neodymium content by inductively coupled plasma atomic emission spectrometry;
--- Part 28. Determination of ruthenium content Inductively coupled plasma atomic emission spectrometry.
This section GB/T 4698 Part 22.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 4698.22-1996 "titanium sponge, titanium and titanium alloy chemical analysis 5-Br-PADAP spectrophotometry
Measuring the amount of niobium. "
This section compared with GB/T 4698.22-1996 main changes are as follows.
--- Remain the original method, the determination of the scope of the original 0.20% ~ 3.00% expanded to 0.10% ~ 3.20%, adding the precision and test report
Terms.
--- Added inductively coupled plasma emission spectrometry, niobium determination range of 0.10% ~ 16.00%.
This part is proposed by China Nonferrous Metal Industry Association.
This part of the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized.
This part of the drafting unit. Northwest Nonferrous Metal Research Institute, Beijing Nonferrous Metal Research Institute, Western Metal Materials Co., Ltd., Zunyi
Titanium Industry Co., Ltd., Bao Titanium Group Co., Ltd., Guangzhou Nonferrous Metal Research Institute, Chaoyang Jinda Titanium Industry Co., Ltd., Guizhou Province Analysis
Test Institute.
The main drafters of this section. Pauline, Yang Pingping, Liu Lei Lei, Li Bo, Sun Baolian, Wang Xiaoyan, Tong Ling, Zhang Bin, Liu Hou Yong, Wang Li,
Wang Daping, Zhang Tianjiao, Wang Jin, Zhang Jinjie, Qu Xinwei, Xiong Xiaoyan, Lei Xiaoyan, Liu Wei, Luo Lin, Qin Junrong, Li Hongzhao, Zhang Ying.
This part replaces the standards previously issued as.
--- GB/T 4698.22-1996.
Sponge titanium, titanium and titanium alloys - Methods for chemical analysis
Part 22. Determination of niobium content
5-Br-PADAP spectrophotometry and
Inductively coupled plasma atomic emission spectrometry
1 Scope
GB/T 4698 provisions of this section sponge titanium, titanium and titanium alloy niobium determination.
This section applies to the determination of niobium in titanium sponge, titanium and titanium alloys. Determination of the scope of a method of 0.10% to 3.20%; method two
0.10% ~ 16.00%.
2 Method One (Arbitration method) 5-Br-PADAP spectrophotometry
2.1 Method summary
The sample is dissolved in sulfuric acid. In the presence of tartaric acid and EDTA, niobium forms a colored complex with 5-Br-PADAP in an acidic medium
The absorbance was measured at a wavelength of 610 nm on a spectrophotometer.
2.2 Reagents
Unless otherwise specified, only reagents that are identified as analytically pure and laboratory-grade water are used in the analysis.
2.2.1 Nitric acid (p = 1.42 g/mL).
2.2.2 Sulfuric acid (1 1).
2.2.3 tartaric acid solution (240g/L).
2.2.4 tartaric acid solution (60g/L).
2.2.5 ammonia (1 1).
2.2.6 Sulfuric acid (5 95).
2.2.7 EDTA (C10H14N2O8Na2 H2O) solution (100g/L).
2.2.8 5-Br-PADAP (2- (5-Br-2-pyridylazo) -5-diethylaminophenol) ethanol solution (0.3 g/L).
2.2.9 titanium matrix solution Weigh 0.10g titanium metal (wTi ≥ 99.95%, wNb < 0.001%) in 100mL beaker was added 10mL
Sulfuric acid (2.2.2) dissolved by heating, dropping nitric acid (2.2.1) to the solution purple disappeared, heating was continued to the solution just take sulfuric acid smoke, cooling,
200mL volumetric flask, diluted with water to the mark, mix well. This solution 1 mL contains 0.5 mg of titanium.
2.2.10 Niobium standard stock solution Weigh 0.7153g niobium pentoxide (wNb2O5 ≥ 99.95%) in a platinum crucible, add 10g pyrosulfuric acid
Potassium was heated on a torch to melt and cool, cooled, leached with a hot tartaric acid solution (100 g/L), placed in a 500 mL beaker,
Stir under stirring to clarify, cooled, transferred to 500mL volumetric flask, tartaric acid solution (100g/L) diluted to the mark, and mix. this
1 mL of solution contains 1.0 mg of niobium.
2.2.11 niobium standard solution Pipette 10.00mL niobium standard stock solution (2.2.10), placed in 1000mL volumetric flask to tartaric acid solution
(2.2.4) diluted to the mark, mix well. 1 mL of this solution contains 10 μg of niobium.
2.2.12 p-nitrophenol solution (1g/L).
2.3 Instruments
Spectrophotometer.
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