SciELO - Scientific Electronic Library Online

vol.31 issue2Evaluation of filtration and ozonation of a primary sanitary effluent: aspects of microbacial inactivation and ozonation variablesUptake of Hg2+ from aqueous solutions by microporous titano- and zircono-silicates author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


RETO, Márcia; FIGUEIRA, Maria Eduardo; FILIPE, Helder Mota  and  ALMEIDA, Cristina M. M.. Fluoride content in green tea infusions (Camellia sinensis). Quím. Nova [online]. 2008, vol.31, n.2, pp.317-320. ISSN 0100-4042.

The aim of this work was to study the influence of green tea consumption on fluoride ingestion. The extraction conditions of fluorides from green tea infusions were defined and nine brands of green tea available in Portugal were analyzed. The quantification of fluorides in the green tea was preceded by the implementation and validation of the potentiometric method (commercial fluoride selective electrode). The concentration of fluorides in the samples ranged from 0. 8 to 2. 0 mg L-1.

Keywords : fluoride; green tea; infusion.

        · text in Portuguese     · Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License