Determination of Zn and Mg in Milk Powder Samples Using Conventional and Alternative Sample Preparations and FAAS

查看全文 作　　者：Deborah Cristina Crominski da [1]Silva;Clecius Henrique [1]Chemim;Leticia Yuriko [1]Togawa;Fabiano [1]Piechotcoski;Erica Roberta Lovo da Rocha [1]Watanabe;Priscilla dos Santo Gaschi [1]Leite;Eduardo Sidinei [2]Chaves;Simone Delezuk [1]Inglez 机构地区：[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 出　　处：《Journal of Food Science and Engineering》索引2019年第9卷第5期,共3页 摘　　要：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. 关 键 词：MILK powder TRACE elements ultrasound-assisted extraction ALKALINE SOLUBILIZATION FAAS.