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Determination of fluorine content in rare earth concentrates by F-La-C19H15NO8 spectrophotometry
XU Yanyan, LIU Tong, ZHANG Lifeng, ZHANG Huibin, ZHANG Huizhen
Metallic Functional Materials . 2025, (6): 72 -78 .  DOI: 10.13228/j.boyuan.issn1005-8192.20240234