Some observations on the determination of boron in wine by flame Emission Spectrometry after methyl borate generation in a heterogeneous phase

  1. Sanz, J. 1
  2. Martin, R.L. 1
  3. Galban, J. 1
  4. Castillo, J.R. 1
  1. 1 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Journal:
Microchemical Journal

ISSN: 0026-265X

Year of publication: 1990

Volume: 41

Issue: 2

Pages: 164-171

Type: Article

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Abstract

In this paper a method for the determination of boron in wine by flame emission spectrometry after methyl borate generation is proposed. The sample is evaporated to dryness and the determination is carried out by generation of the volatile boron compound from the solid phase. In order to perform the generation, 0.1 ml concentrated sulfuric acid is added to the solid phase, the mix at 90 °C is heated for 3 min, and then 5 ml methanol is injected. Boron concentration obtained in the wine sample was compared with that obtained using the 1,1′-dianthrimide spectrophotometric method. © 1990.