GB/T 4698.28-2017Methods for chemical analysis of titanium sponge, titanium and titanium alloys - Part 28: Determination of ruthenium content - Inductively coupled plasma atomic emission spectrometry (English PDF)
海绵钛、钛及钛合金化学分析方法 第28部分：钌量的测定 电感耦合等离子体原子发射光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 4698.28-2017 is the English-translated version of 海绵钛、钛及钛合金化学分析方法 第28部分：钌量的测定 电感耦合等离子体原子发射光谱法.
GB/T 4698.28-2017 is the Chinese standard "Methods for chemical analysis of titanium sponge, titanium and titanium alloys - Part 28: Determination of ruthenium content - Inductively coupled plasma atomic emission spectrometry".
Its scope clause reads: This section GB/T 4698 specifies the determination of the amount of ruthenium in titanium sponge, titanium and titanium alloys. This section applies to the determination of the amount of ruthenium sponge titanium, titanium and titanium alloys, the determination of the range of 0.05% to 0.50%. Its clauses include method summary; reagent; instruments; sample.
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Document preview — GB/T 4698.28-2017
National Standard of the People's Republic of China
- ICS
- 77.120.50
- Classification
- H 14
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 method summary
- 3 reagent
- 4 instruments
- 5 sample
1 Scope
This section GB/T 4698 specifies the determination of the amount of ruthenium in titanium sponge, titanium and titanium alloys.
This section applies to the determination of the amount of ruthenium sponge titanium, titanium and titanium alloys, the determination of the range of 0.05% to 0.50%.
2 method summary
Hydrochloric acid, hydrofluoric acid, nitric acid mixed acid, high-pressure digestion tank at 150 °C insulation 2h dissolution of the sample. Use inductively coupled plasma
Atomic emission spectrometer, the emission intensity of ruthenium in the test solution is measured at the recommended analytical line wavelength, and the concentration of ruthenium is obtained from the working curve.
3 reagent
Unless otherwise specified, only reagents that are identified as analytically pure and laboratory-grade water are used in the analysis.
3.1
Hydrochloric acid (p = 1.19 g/mL).
3.2
Nitric acid (p = 1.42 g/mL).
Hydrofluoric acid (rho = 1.13 g/mL).
3.4
Hydrochloric acid (1 1).
3.5
Nitric acid (1 1).
3.6
Hydrofluoric acid (1 1).
3.7
Hydrogen peroxide.30% solution.
3.8
Titanium (wTi not less than 99.9%, wRu < 0.001%).
3.9
ruthenium standard stock solution Weigh 0.1000g metal ruthenium powder (wRu >= 99.99%) placed in glass sealed tube, add 8mL hydrochloric acid (3.1), 1mL of hydrogen peroxide (3.7), sealed tube placed in a special steel bomb dissolved at 250 °C 24h, cooled open tube and transferred to 100mL
Volumetric flask, add 10mL hydrochloric acid (3.1), diluted with water to the mark, mix well. This solution 1 mL contains 1.0 mg of ruthenium.
3.10
ruthenium standard solution Pipette 10.00mL ruthenium standard stock solution (3.9) in 100mL volumetric flask, add 10mL hydrochloric acid (3.1),
Dilute to the mark with water and mix well. 1 mL of this solution contains 100 µg of ruthenium.
3.11
Argon, volume fraction >=99.99%.
4 instruments
4.1 Inductively Coupled Plasma Atomic Emission Spectrometer
Equipped with hydrofluoric acid injection system, the resolution is less than 0.006nm (200nm).
4.2
Element Recommended Analysis Wavelength 240.272nm.
5 sample
Sponge titanium, titanium and titanium alloy sampling should follow the appropriate standard method has been promulgated.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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