Details

Autor(en) / Beteiligte

• Souza, Sidnei O.
• Ávila, Dayara Virgínia L.
• Cerdà, Victor
• Araujo, Rennan Geovanny O.

Titel

Selenium inorganic speciation in beers using MSFIA-HG-AFS system after multivariate optimization

Ist Teil von

• Food chemistry, 2022-01, Vol.367, p.130673-130673, Article 130673

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Experimental conditions of hydride generation were optimized through Doehlert design.•Beer samples effectively analyzed by MSFIA-HG-AFS system.•Precise, accurate and sensitivity procedure for Se and species determination is proposed.•Total inorganic Se, Se(IV) and Se(VI) concentrations were determined in beer samples.•Beer is an alternative source for incorporation of selenium in Spanish diet. In this work, the use of a multisyringe flow injection analysis coupled to hydride generation atomic fluorescence spectrometry (MSFIA-HG-AFS) for inorganic selenium chemical speciation was proposed. A Doehlert design was applied to optimize the experimental conditions for hydride generation (NaBH4 and HCl concentrations). The limits of quantification (LoQ) obtained were 0.07 µg L−1, for total inorganic Se, and 0.08 µg L−1, for Se(IV). Accuracy and precision of the proposed analytical method were evaluated through analysis of standard reference material and addition and recovery tests. The optimized method was applied to analyses of eight samples of beer, produced in Spain, obtaining concentrations for Se(IV) (<0.08 – 0.46 ± 0.01 µg L−1), total inorganic Se (0.47 ± 0.01 – 3.04 ± 0.62 µg L−1) and Se(VI) (0.06 ± 0.01 – 3.00 ± 0.59 µg L−1). The proposed analytical method was accurate, precise and sensitivity for determination of selenium species in beer samples.