GB/T 26417-2010Chemical analysis methods of praseodymium-neodymium alloy and the compounds - Determination of REO relative contents (English PDF)
镨钕合金及其化合物化学分析方法 稀土配分量的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
January 14, 2011
Implementation date
November 1, 2011
Scope
GB/T 26417-2010 is the English-translated version of 镨钕合金及其化合物化学分析方法 稀土配分量的测定.
GB/T 26417-2010 is the Chinese standard "Chemical analysis methods of praseodymium-neodymium alloy and the compounds - Determination of REO relative contents". Its scope clause reads: This standard specifies the Pr-Nd alloy Two Methods to Measure REE compounds and components.
This standard applies to the determination of the compounds of fifteen praseodymium neodymium alloy and REE component. Method 1 Measuring range. Pr10.0% ~ 30.0%, Nd70.00% ~ 90.00%, others 0.05% to 0.50% rare earth elements; Method 2 Measurement range.
Pr10.0% ~ 30.0%, Nd60.0% ~ 90.0%, other rare earth elements 0.03% to 0.40%. Method 1 X-ray Fluorescence Spectrometry. Its clauses include principle of the method; reagents and materials.
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Document preview — GB/T 26417-2010
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 14
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 principle of the method
- 3 Reagents and materials
- 3.20 rare earth oxides mixed standard solution (1)
1 Scope
This standard specifies the Pr-Nd alloy Two Methods to Measure REE compounds and components.
This standard applies to the determination of the compounds of fifteen praseodymium neodymium alloy and REE component. Method 1 Measuring range.
Pr10.0% ~ 30.0%, Nd70.00% ~ 90.00%, others 0.05% to 0.50% rare earth elements; Method 2 Measurement range.
Pr10.0% ~ 30.0%, Nd60.0% ~ 90.0%, other rare earth elements 0.03% to 0.40%.
Method 1 X-ray Fluorescence Spectrometry
2 principle of the method
The sample is dissolved by steam until nearly dry, accurately dilute hydrochloric acid solution to dissolve clear, made of thin samples, each measuring dilute the X-ray fluorescence spectrometer
Earth element content and calculate its assigned weight.
3 Reagents and materials
3.1
lanthanum oxide (REO > 99.5%, La2O3/REO > 99.99%).
3.2
cerium oxide (REO > 99.5%, CeO2/REO > 99.99%).
3.3
praseodymium oxide (REO > 99.5%, Pr6O11/REO > 99.99%).
3.4
neodymium oxide (REO > 99.5%, Nd2O3/REO > 99.99%).
3.5
samarium oxide (REO > 99.5%, Sm2O3/REO > 99.99%).
3.6
europium oxide (REO > 99.5%, Eu2O3/REO > 99.99%).
3.7
gadolinium oxide (REO > 99.5%, Gd2O3/REO > 99.99%).
3.8
terbium oxide (REO > 99.5%, Tb4O7/REO > 99.99%).
3.9
dysprosium oxide (REO > 99.5%, Dy2O3/REO > 99.99%).
3.10
holmium oxide (REO > 99.5%, Ho2O3/REO > 99.99%).
3.11
erbium oxide (REO > 99.5%, Er2O3/REO > 99.99%).
3.12
thulium oxide (REO > 99.5%, Tm2O3/REO > 99.99%).
3.13
ytterbium oxide (REO > 99.5%, Yb2O3/REO > 99.99%).
3.14
lutetium oxide (REO > 99.5%, Lu2O3/REO > 99.99%).
3.15
yttrium oxide (REO > 99.5%, Y2O3/REO > 99.99%).
3.16
Hydrogen peroxide (30%).
3.17
Nitrate (rho1.42g/mL).
3.18
hydrochloric acid (11).
3.19
hydrochloric acid (397).
3.20 rare earth oxides mixed standard solution (1)
Weigh 0.2000g after burning at 900 °C 1h, placed in a desiccator to cool to room temperature
Cerium oxide (3.2) in 100mL beaker, moistened with water, was added 10mL of nitric acid (3.17), was added dropwise hydrogen peroxide (3.16) solubilization, add cold
Heat to dissolve clear. After cooling transferred 200mL volumetric flask.
GB/T 20931.12-2025 | GB/T 24981.1-2020 | GB/T 24981.2-2020 | GB/T 26416.8-2023 | GB/T 26416.7-2023 | GB/T 26416.6-2023 | […]
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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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