Avaliação da labilidade de alumínio em infusões de erva-mate empregando voltametria adsortiva de redissolução catódica

Química Nova

Bruna Kauely De Campos¹  Jéssica Pacheco Dos Prazeres¹  Yohandra Reyes Torres¹  Vanessa Egéa Dos Anjos¹  Sueli Pércio Quináia¹ 

[1] ,Universidade Estadual do Centro-Oeste Departamento de Química Guarapuava PR ,Brasil

关键词: speciation;    aluminum;    tea;    1;    2-dihydroxyanthraquinone-3-sulfonic acid;   

DOI  :  10.5935/0100-4042.20140226

来源: SciELO

【 摘 要 】

Infusions of yerba mate obtained at different stages of industrialization were evaluated to determine the bioavailable fraction of Al. Adsorptive Cathodic Stripping Voltammetry using DASA (complexing agent) was applied to determine the labile fraction of Al at pH 5.0 and pH 8.0 for the total fraction of dissolved Al. The results indicate that on average 60% of Al is complexed with organic compounds, minimizing their bioavailability; however, the labile fraction exceeds by up to 4 times the maximum weekly intake recommended by the World Health Organization.

【 授权许可】

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