A method and system for detecting the content of rare earth elements

Abstract

The application discloses a method and system for detecting rare earth element content, and belongs to the technical field of spectrum analysis and material detection. The roughness parameter and the particle equivalent diameter parameter of a sample surface are acquired, a coupling compensation model of sample structure characteristics and plasma physical parameters is constructed, the signal generated by laser-induced breakdown spectroscopy is corrected, and the influence of sample particle structure difference on the rare earth element spectral line intensity is reduced. Through structure-temperature double-constraint normalization processing on the compensated characteristic spectral line, a quantitative regression model of the element content is established, and high-precision, stable and rapid detection of the rare earth element content is realized. The method is simple in model structure, small in parameter quantity, strong in engineering applicability, and suitable for on-site rapid detection in the fields of rare earth materials, metallurgical materials and functional ceramics.

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