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Effective procedures for the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, U and rare earth elements in plants and foodstuffs

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Abstract

There are several international regulations regarding trace elements. The use of ICP-MS for their determination is usually a difficult task, especially when Hg is one of the target elements. This work aimed to provide a fast, simple and low-cost method for routine digestion of different foodstuffs aiming at the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, and U as well as rare earth elements. Four conditions were evaluated for sample heating: a water-bath (WB), a digester block (DB) and a microwave oven (MW) under medium (MWMP) and high-pressure (MWHP). Low-cost homemade PTFE-vessels were used for the WB and DB. The MWHP presented the best recoveries for all elements. The use of the WB and DB allowed the determination of all elements in animal tissues and grains, except Hg. The use of L-CYS 0.2% m/v and a MWHP was crucial for Hg determination. Therefore, this study shows high-frequency methods crucial for industry and labs that focus on food monitoring, especially due to the new regulations in progress worldwide.

Graphical abstract: Effective procedures for the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, U and rare earth elements in plants and foodstuffs

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Publication details

The article was received on 08 Jun 2018, accepted on 17 Jul 2018 and first published on 18 Jul 2018


Article type: Technical Note
DOI: 10.1039/C8AY01295D
Citation: Anal. Methods, 2018, Advance Article
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    Effective procedures for the determination of As, Cd, Cu, Fe, Hg, Mg, Mn, Ni, Pb, Se, Th, Zn, U and rare earth elements in plants and foodstuffs

    F. P. Paniz, T. Pedron, B. M. Freire, D. P. Torres, F. F. Silva and B. L. Batista, Anal. Methods, 2018, Advance Article , DOI: 10.1039/C8AY01295D

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