Dosagem de silício em silico-fosfatos naturais

Jeannine Odette Cassedanne, Hamílcar Freire de Carvalho

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.



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

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