Premium
Microwave Digestion of Multi‐Component Foods for Sodium Analysis by Atomic Absorption Spectrometry
Author(s) -
SAPP ROBERT E.,
DAVIDSON SANDRA D.
Publication year - 1991
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1991.tb04786.x
Subject(s) - microwave digestion , digestion (alchemy) , sodium , chemistry , atomic absorption spectroscopy , matrix (chemical analysis) , reproducibility , microwave oven , microwave , chromatography , analytical chemistry (journal) , detection limit , physics , organic chemistry , quantum mechanics
Microwave digestion of a variety of low‐sodium dinners was evaluated for determining sodium content. Dinners containing a meat, vegetable and dessert portion were blended, digested with strong acid in the microwave oven, and read by atomic absorption. Sodium values were compared with those obtained by an FDA method. Also, a sodium standard of known concentration was added to some samples, and the recoveries measured for two different amounts added. Reproducibility of microwave digestion was tested on replicates analyzed on the same day, on consecutive days and on consecutive weeks. Of the ten dinner types tested no matrix effects or interferences were noted, and we concluded that microwave digestion is a rapid means of preparing a complex matrix such as a frozen dinner for sodium analysis.