Published July 2012 | Version v1
Journal article Metadata-only

Microwave digestion for determination content of iron and zinc total in food

Creators

  • 1. Univ. de Costa Rica, Escuela de Quimica, Seccion de Quimica Analitica (Costa Rica)

Description

The food digestion procedure was optimized by means of a microwave oven, to quantify the iron and total zinc in different matrices by atomic absorption spectroscopy. The optimum amount of concentrated HNO3 was analyzed at 65% to digest sample mass determined by assessment of the percentage of recovery obtained with different amount of HNO3. The results have not differed from those obtained by officially recommended methods of acid digestion in open systems and calcination. (author)

Availability note (English)

Also available from Biblioteca Luis Demetrio Tinoco, Universidad de Costa Rica

Abstract (Spanish)

El procedimiento de digestion de alimentos se ha optimizado por medio de un horno de microondas, para cuantificar el hierro y el zinc totales en diferentes matrices por espectroscopia de absorcion atomica. La cantidad optima de HNO3 concentrado se ha analizado al 65% para digerir determinada masa de muestra por evaluacion del porcentaje de recuperacion obtenido con diferente cantidad de HNO3. Los resultados no han diferido de los obtenidos por los metodos recomendados oficialmente de digestion acida en sistemas abiertos y de calcinacion. (autor)

Additional details

Additional titles

Original title (Spanish)
Digestion en horno de microondas para determinacion de contenido de hierro y zinc totales en alimentos

Publishing Information

Journal Title
Tecnologia en Marcha
Journal Volume
25
Journal Issue
no.3
Journal Page Range
p. 96-100
ISSN
0379-3982

INIS

Country of Publication
Costa Rica
Country of Input or Organization
Costa Rica
INIS RN
44074626
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S60: APPLIED LIFE SCIENCES;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ABSORPTION SPECTROSCOPY; CALIBRATION STANDARDS; CHEMICAL ANALYSIS; DIGESTION; FOOD PROCESSING; IRON; MEASURING METHODS; MICROWAVE OVENS; MINERALIZATION; NUMERICAL DATA; SPECTROMETERS; ZINC
Descriptors DEC
APPLIANCES; DATA; ELECTRIC APPLIANCES; ELECTRICAL EQUIPMENT; ELEMENTS; EQUIPMENT; INFORMATION; MEASURING INSTRUMENTS; METALS; OVENS; PROCESSING; SPECTROSCOPY; STANDARDS; TRANSITION ELEMENTS

Optional Information

Notes
Tabs., refs.