GB/T 18114.5-2010Chemical analysis methods of rare earth concentrates - Part 5: Determination of aluminum oxide content - Inductively coupled plasma atomic emission spectrometry (English PDF)
稀土精矿化学分析方法 第5部分：氧化铝量的测定 电感耦合等离子体发射光谱法
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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 18114.5-2010 is the English-translated version of 稀土精矿化学分析方法 第5部分：氧化铝量的测定 电感耦合等离子体发射光谱法.
GB/T 18114.5-2010 is the Chinese standard "Chemical analysis methods of rare earth concentrates - Part 5: Determination of aluminum oxide content - Inductively coupled plasma atomic emission spectrometry".
Its scope clause reads: GB/T 18114 provisions of this part of the determination of rare earth concentrates in the alumina content. This section applies to the determination of rare earth concentrates in the alumina content.
Measuring range. 0.50% - 8.00%. Its clauses include principle of the method; reagents; instrument; sample.
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Document preview — GB/T 18114.5-2010
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
- 4 Instrument
- 5 Sample
1 Scope
GB/T 18114 provisions of this part of the determination of rare earth concentrates in the alumina content.
This section applies to the determination of rare earth concentrates in the alumina content. Measuring range. 0.50% - 8.00%.
2 principle of the method
Sample with sodium hydroxide, sodium peroxide decomposition melted, remove thorium and rare earth separation of alkali, using matrix effect correction method in an acidic solution, at
Argon plasma spectrometer for measuring the amount of alumina.
3 Reagents
3.1
sodium hydroxide.
3.2
sodium peroxide.
3.3
hydrochloride (rho1.19g/mL).
3.4
hydrochloride (11).
3.5 standard aluminum stock solution
Weigh accurately 0.1000g high purity (purity > 99.99%), add water, 5mL and 10mL hydrochloric acid (3.3),
Low heat to dissolve, removed, cooled to room temperature and transferred to 100mL volumetric flask, dilute with water to volume, and mix. This solution containing 1mL
1mg aluminum.
3.6 aluminum standard solution
accurate Pipette 5.00mL aluminum standard stock solution (3.5) in 100mL flask, add 2mL of hydrochloric acid (3.4),
Dilute with water to volume, and mix. This solution 1mL containing 50µg aluminum.
3.7 Argon
[w (Ar) > 99.99%].
4 Instrument
4.1
Full Spectrum Direct Reading plasma emission spectrometer.
4.2 source
argon plasma light source, power is not less than 1.0kW.
5 Sample
The sample size should be 5.1 to grind through the 0.074mm sieve.
5.2
The sample was 105 °C ~ 110 °C drying 2h, placed in a desiccator to cool to room temperature.
Step 6 Analysis
6.1 Sample
Weigh 0.5g sample (5), accurate to 0.0001g.
6.2
Determination of the number of
Weigh two samples (6.1) parallel determination of the mean value.
6.3 blank test
......
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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