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https://repositorio.ufba.br/handle/ri/4709
metadata.dc.type: | Artigo de Periódico |
Título : | Planejamento fatorial aplicado à digestão de amostras de feijão assistida por radiação microondas |
Otros títulos : | Química Nova |
Autor : | Costa, Letícia M. Korn, Maria das Graças Andrade Castro, Jacira T. Santos, Wagna P. C. Carvalho, Edivan V. Nogueira, Ana Rita de Araujo |
metadata.dc.creator: | Costa, Letícia M. Korn, Maria das Graças Andrade Castro, Jacira T. Santos, Wagna P. C. Carvalho, Edivan V. Nogueira, Ana Rita de Araujo |
Resumen : | The use of factorial design was evaluated for optimization of focused-microwave-assisted digestion of bean samples. Calcium, Fe, Mg, Mn and Zn percentual recoveries were determined in digestates after focused-microwave-assisted digestion according to factorial design procedures. A cavity microwave digestion was carried out to certify the elemental compositions obtained. The accuracy was checked using a standard reference material, the NIST SRM 8433 - Corn Bran. Results are in agreement with certified values at the 95% confidence limit when the Student t-test was used. Volumes of nitric and sulfuric acid, temperature, and the interplay between HNO3 and H2SO4 initial volumes were significant variables according to P-values in the analysis of variance (ANOVA). |
Palabras clave : | Factorial design Bean Focused-microwave-assisted digestion |
URI : | http://www.repositorio.ufba.br/ri/handle/ri/4709 |
Fecha de publicación : | 2006 |
Aparece en las colecciones: | Artigo Publicado em Periódico (Química) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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27871.pdf | 112,13 kB | Adobe PDF | Visualizar/Abrir |
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