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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/4700

Title: Alternativas analíticas para determinação de ferro e titânio em cimento Portland
Other Titles: Química Nova
Authors: Franco Junior, Jorge de Oliveira
Korn, Maria das Graças Andrade
Costa, Antonio Celso Spinola
Santos Junior, Aníbal de Freitas
Teixeira, Leonardo Sena Gomes
Keywords: Portland cement;iron determination;titanium determination
Issue Date: 2001
Abstract: Comparative study of analytical methods for iron and titanium determination in Portland cement. In the present work four different analytical methodologies were studied for the determination of iron and titanium in Portland cement. The cement samples were dissolved with hot HCl and HF, being compared Fe and Ti concentrations through four analytical methods: molecular absorption spectrophotometry using the reagents 1,2-hydroxybenzene-3,5-disulfonic acid (Tiron) and the 5-chloro-salicylic acid (CSA), inductively coupled plasma atomic emission spectrometry (ICP-AES) and flame atomic absorption spectrophotometry (FAAS). In the spectrophotometric determinations were studied pH conditions, reagents addition order, interferences, amount of reagents, linear range and stability of the system. In the techniques of ICP-AES and FAAS were studied the best lines, interferences, sensibility and linear range. The obtained results were compared and the agreement was evaluated among the methods for the determination of the metals of interest.
Description: p. 195-199.
URI: http://www.repositorio.ufba.br/ri/handle/ri/4700
ISSN: 0100-4042
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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