Determination of total selenium in mussel and wheat samples after tetramethylammonium hydroxide digestion

Claudia Brunori, M. Beatriz De La Calle, Massimo Angelone, Roberta Morabito

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Abstract

A tetramethylammonium hydroxide (TMAH) based digestion method for the determination of total selenium content in wheat and mussel samples is proposed. The results achieved with the proposed digestion procedure were compared with those obtained after microwave oven acid mineralization. Graphite furnace-atomic absorption spectrometry (GF-AAS) was used for the final selenium determination. Efficiency of the proposed digestion method analyses was evaluated on a Wheat Flour Standard Reference Material (NIST 1567a) and on spiked samples. Hydride generation-atomic absorption spectrometric analyses showed the possibility of exploiting TMAH digestion also for speciation purposes.
Original languageEnglish
Pages (from-to)873 - 880
Number of pages8
JournalAnnali di Chimica
Volume89
Issue number11-12
Publication statusPublished - Nov 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Environmental Science(all)

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