Formation of Boron-mannitol Complex in the Hydrofluoric Acid Solution and a Possibility of the Use of Acids in the Separation of Boron from the Natural Rock Samples

By Tsuyoshi Ishikawa, Eizo Nakamura

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Volatilization and mass fractionation of boron during evaporation of the hydrofluoric and hydrochloric acid solutions were investigated with varying mannitol/boron ratios. The degree of volatilization and mass fractionation decreases with increasing mannitol/boron mol ratio and the boron volatilization is completely suppressed when the ratio is more than unity. These results indicate that the final stable compound of boron-mannitol complex is an equimolar complex of boron and mannitol. The formation of this complex allows the use of hydrofluoric and hydrochloric acids for the dissolution of silicate rock samples and for separation of boron from the samples adopting anion exchange chromatography in F~ form.

    Original languageEnglish
    Pages (from-to)91-95
    Number of pages5
    JournalProceedings of the Japan Academy, Series B
    Volume66
    Issue number5
    DOIs
    Publication statusPublished - 1990

    Keywords

    • Boron-mannitol complex
    • boron isotopic composition
    • mass fractionation

    ASJC Scopus subject areas

    • Agricultural and Biological Sciences(all)
    • Physics and Astronomy(all)

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