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


Autoria(s): Campos,Bruna Kauely de; Prazeres,Jéssica Pacheco dos; Torres,Yohandra Reyes; Anjos,Vanessa Egéa dos; Quináia,Sueli Pércio
Data(s)

01/01/2014

Resumo

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.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014000900010

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.37 n.9 2014

Palavras-Chave #speciation #aluminum #tea #1,2-dihydroxyanthraquinone-3-sulfonic acid
Tipo

journal article