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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Deborah Cristina Crominski da Silva1, Clecius Henrique Chemim1, Leticia Yuriko Togawa1, Fabiano Piechotcoski1, Erica Roberta Lovo da Rocha Watanabe1, Priscilla dos Santo Gaschi Leite1, Eduardo Sidinei Chaves2 and Simone Delezuk Inglez1
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DOI:10.17265/2159-5828/2019.05.002
Affiliation(s)
1. Department of Chemical Engineering, Federal University of Technology-Paraná, Ponta Grossa, Paraná 84016-210, Brazil
2. Department of Chemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
ABSTRACT
Conventional procedures for sample preparation, such as calcination and
acid digestion, were compared with an alternative procedure: alkaline
solubilization and ultrasound-assisted extraction. The procedures were
evaluated by the application of the mentioned sample preparation and subsequent
determination of Mg and Zn in milk powder samples by flame atomic absorption
spectrometry (FAAS). The results indicated that ultrasound-assisted extraction
was not suitable for Zn and Mg extraction, whereas alkaline solubilization
using TMAH was efficient only for determination of Mg.
KEYWORDS
Milk powder, trace elements, ultrasound-assisted extraction, alkaline solubilization, FAAS.
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