Chemical analysis methods of rare earth include volumetric method, spectrophotometry, spectral nomenclature and gravimetric method. Chemical analysis of rare earth oxides has been widely used in rare earth production and inspection of rare earth products.
A: Gravimetric method has been used to determine the total amount of constant rare earth for a long time.
B: Volumetric analysis is used to determine the total amount of rare earth and cerium and analyze raw materials (hydrochloric acid, sulfuric acid, etc.). ) used in smelting process.
C: Spectrophotometry is used to determine trace impurities in rare earth, such as silicon, phosphorus, chloride, sulfate and other non-metallic elements.
D: Atomic absorption spectrometry is often used to determine non-rare earth impurities in the analysis of rare earth finished products.