| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000196511 |
| ISSN: | 0100-4042 |
| Autores: | Franco-Junior, Jorge de O1 Korn, Maria das Gracas A Costa, Antonio Celso S Santos-Junior, Anibal de Freitas Texeira, Leonardo S.G |
| Instituciones: | 1Universidade Federal da Bahia, Departamento de Quimica Analitica, Salvador, Bahia. Brasil 2Universidade Catolica do Salvador, Departamento de Engenharia, Salvador, Bahia. Brasil |
| Año: | 2001 |
| Periodo: | Mar-Abr |
| Volumen: | 24 |
| Número: | 2 |
| Paginación: | 195-199 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | 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 |
| Disciplinas: | Química |
| Palabras clave: | Química analítica, Fierro, Titanio, Determinación, Plasma acoplado por inducción, Espectrometría de emisión atómica, Metales |
| Keyword: | Chemistry, Analytical chemistry, Iron, Titanium, Determination, Inductively coupled plasma, Atomic emission spectrometry, Metals |
| Texto completo: | Texto completo (Ver HTML) |
