Which method is most accurate in determining the purity of cerium oxide?

The most accurate method for determining the purity of cerium oxide is ICP-MS (Inductively Coupled Plasma Mass Spectrometry), which is particularly suitable for detecting trace impurities in high-purity samples (≥ 99.99%). It can accurately determine rare earth and non rare earth impurities and is an authoritative standard in the industry.

Comparison of core methods

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Practical suggestions

High purity requirements (such as optics and electronics): ICP-MS is preferred to ensure impurity content meets standards.

Industrial grade rapid screening: XRF is more efficient and suitable for daily quality inspection.

Procurement verification: Require suppliers to provide COA testing reports and submit them to third-party organizations for review.