https://repositorio.ufba.br/handle/ri/4700
metadata.dc.type: | Artigo de Periódico |
Título : | Alternativas analíticas para determinação de ferro e titânio em cimento Portland |
Otros títulos : | Química Nova |
Autor : | Franco Junior, Jorge de Oliveira Korn, Maria das Graças Andrade Costa, Antonio Celso Spinola Santos Junior, Aníbal de Freitas Teixeira, Leonardo Sena Gomes |
metadata.dc.creator: | Franco Junior, Jorge de Oliveira Korn, Maria das Graças Andrade Costa, Antonio Celso Spinola Santos Junior, Aníbal de Freitas Teixeira, Leonardo Sena Gomes |
Resumen : | 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. |
Palabras clave : | Portland cement iron determination titanium determination |
URI : | http://www.repositorio.ufba.br/ri/handle/ri/4700 |
Fecha de publicación : | 2001 |
Aparece en las colecciones: | Artigo Publicado em Periódico (Química) |
Fichero | Descripción | Tamaño | Formato | |
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4281.pdf | 46,64 kB | Adobe PDF | Visualizar/Abrir |
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