Determination of silicon dioxide in fluorite by ICP OES with closed digestion and boric acid complex reaction.

ABSTRACT: Fluorite is widely utilized in the new energy, semiconductor, high-end manufacturing, and steelmaking industries. The silicon dioxide (SiO₂) content is critical for both the quality evaluation of fluorite and the design of beneficiation processes. However, the traditional fusion method suffered from several limitations, including cumbersome pretreatment, silica precipitation during acidification, and significant matrix effects caused by alkali metals introduced during fusion. To address these challenges, this study developed an innovative method employing acid dissolution for the determination of SiO₂ content in fluorite using inductively coupled plasma optical emission spectrometry (ICP OES). This method employs a mixture of nitric acid and hydrofluoric acid in a water bath to digest the

SUBMITTER: Wang X 

PROVIDER: S-EPMC12697986 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature