Please use this identifier to cite or link to this item: https://repositorio.ufba.br/handle/ri/8339
metadata.dc.type: Artigo de Periódico
Title: Spectrophotometric and inductively coupled plasma atomic emission spectrometric determination of titanium in ilmenites after rapid dissolution with phosphoric acid
Other Titles: Talanta
Authors: Andrade, Jailson Bittencourt de
Nunes, Genebaldo S.
Veiga, Merilio P.
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Amorim, Adelaide Maria Mendonça
Reis, Selma T.
metadata.dc.creator: Andrade, Jailson Bittencourt de
Nunes, Genebaldo S.
Veiga, Merilio P.
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Amorim, Adelaide Maria Mendonça
Reis, Selma T.
Abstract: The use of 85% phosphoric acid in borosilicate conical flasks for the dissolution of ilmenites at 230 ± 10°C is reported. The samples were quantitatively dissolved in less than 13 min. Titanium was determined by both spectrophotometry and inductively coupled plasma atomic emission spectrometry ICP-AES. Vanadium and iron were determined by ICP-AES. In several samples of ilmenites analyzed, the TiO2 concentration was in the range 10.6–57.5% and those of FeO and V2O5 were in the ranges 31.6–51.4% and 0.39–1.32%, respectively. In the spectrophotometric method, vanadium interference occurs only when the View the MathML source concentration ratio is <4. In all samples analyzed this ratio was around 12, resulting in no interferences due to vanadium. Hence the ilmenite dissolution procedure using phosphoric acid was compatible with titanium quantification by both spectrophotometry and ICP-AES.
Keywords: Inductively coupled plasma atomic emission spectrometry
llmenites
Phosphoric acid dissolution
Spectrophotometry
Titanium
URI: http://www.repositorio.ufba.br/ri/handle/ri/8339
Issue Date: 1997
Appears in Collections:Artigo Publicado em Periódico (Química)

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