Erbium oxide purity detection method

Abstract

The invention discloses an erbium oxide purity detection method. The erbium oxide purity detection method comprises the following steps of S1, taking erbium oxide to be detected, recording the mass ofthe erbium oxide to be detected as m0, adding a hydrochloric acid solution to the erbium oxide to be detected, heating to dissolve the erbium oxide to obtain a test solution, and recording the volumeof the test solution as V1; S2, taking a proper amount of the test solution to obtain a taken test solution, recording the volume of the taken test solution as V2, and adding ascorbic acid and a sulfosalicylic acid solution into the taken test solution; S3, taking methyl orange as an indicator, adjusting the solution to be yellow by using ammonia water and hydrochloric acid, and then adding a hexamethylenetetramine buffer solution; S4, taking xylenol orange as an indicator, taking an EDTA standard titration solution, recording the concentration of the EDTA standard titration solution as c, then carrying out complexometric titration until the solution turns yellow from red, and recording the volume of the consumed EDTA standard titration solution as V; and S5, calculating the mass percentage content of the erbium oxide. The method has the advantages that the detection accuracy of the high-purity (99.5% or above) erbium oxide is high, and the detection method is simple and convenient.

Description

technical field [0001] The invention relates to a method for detecting the purity of a compound, in particular to a method for detecting the purity of erbium oxide. Background technique [0002] Nano-erbium oxide is the raw material for preparing various high-performance materials, such as fluorescent materials, bioactivated enzymes, optical fibers and sensitive components. The performance of these materials is closely related to the purity of erbium oxide, the higher the purity, the better the performance of the material. [0003] At present, the detection of the purity of erbium oxide all adopts analyzers such as ICP-AES and ICP-MS to detect, but the experiment finds that this method is not suitable for the detection of the purity of high-purity (more than 99.5%) erbium oxide, and its reason is due to the high purity, Multi-step dilution is required, resulting in large detection errors. And the operation steps are too many, too loaded down with trivial details and comple...

AI Technical Summary

Problems solved by technology

[0003] At present, the detection of the purity of erbium oxide all adopts analyzers such as ICP-AES and ICP-MS to detect, but the experiment finds that this method is not suitable for the detection of the purity of high-purity (more than 99.5%) erbium oxide, and its reason is due to the high purity, Multi-step dilution is required, resulting in large detection errors

And there are too many operation steps, too cumbersome and complicated

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