Comparison of partial digestion procedures for determination of Ca, Cr, Cu, Fe, K, Mg, Mn, Na, P, and Zn in milk by inductively coupled plasma-optical emission spectrometry
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Journal of AOAC International
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Resumo
A fast procedure was developed for determination
of Ca, Cr, Cu, Fe, K, Mg, Mn, Na, P, and Zn in milk
samples. This procedure consisted of a partial digestion with hydrochloric acid on a hot plate. The
results obtained were compared with 3 other digestion procedures (dry ashing and 2 microwave digestions). All the procedures showed similar precision levels, with coefficients of variation <10% for
most analyzed elements. Accuracy was evaluated
by using certified reference materials, and the values obtained were within the confidence intervals
for these products. The results obtained were not
considered statistically different. The partial digestion on a hot plate with HCl can be very practical
for laboratories with relatively large numbers of
sample analyses.
Como referenciar
KIRA, C.S.; MAIO, F.D.; MAIHARA, V.A. Comparison of partial digestion procedures for determination of Ca, Cr, Cu, Fe, K, Mg, Mn, Na, P, and Zn in milk by inductively coupled plasma-optical emission spectrometry. Journal of AOAC International, v. 87, n. 1, p. 151-156, 2004. DOI: 10.1093/jaoac/87.1.151. Disponível em: http://repositorio.ipen.br/handle/123456789/7515. Acesso em: 30 Dec 2025.
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