Dosagem de silício em silico-fosfatos naturais

Authors

  • Jeannine Odette Cassedanne UFRJ; Instituto de Geociências
  • Hamílcar Freire de Carvalho UFRJ; Instituto de Geociências

DOI:

https://doi.org/10.11137/1990_0_39-42

Abstract

This study describes a silicon volumetric titration in minerals silico-phosphates. Silicon is precipited as quinolin silico-molibdate and molybdenum is titsted by complexometric-accumulation method. In the range of 0,5 to 2,5 mg of silicon, a precision of about 0,5% is reached with a good reproducibility. A previous elimination of phosphates ions is necessary.

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Published

1990-12-01

Issue

Vol. 13 (1990)

Section

Article

License

This journal is licensed under a Creative Commons — Attribution 4.0 International — CC BY 4.0, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.