GB/T 18114.8-2010 Chemical analysis methods of rare earth concentrates - Part 8: Determination of fifteen rare earth oxide relative contents - Inductively coupled plasma emission spectrometry
1 Scope
This part of GB/T 18114 specifies the method for the determination of fifteen rare earth oxide relative contents in rare earth concentrates.
This part is applicable to the determination of fifteen rare earth oxide relative contents in rare earth concentrates. See Table 1 for the determination range.
Table 1
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2 Principle
The test specimen is subjected to alkali fusion, followed by filtration and acidification with hydrochloric acid. In a dilute acid medium, the solution is directly excited using an argon plasma light source, and spectral determination is conducted. The test results are then normalized.
3 Reagents and materials
Foreword i 1 Scope 2 Principle 3 Reagents and materials 4 Apparatus 5 Specimen 6 Analytical procedures 7 Calculation and expression of analysis results 8 Precision 9 Quality assurance and control
