Resumo

PLAZA, Enrique et al. Study on the leaching of cadmium, chromium and lead from a tongue cleaner onto artificial saliva. Rev. Estomatol. Herediana [online]. 2017, vol.27, n.3, pp.176-179. ISSN 1019-4355.  http://dx.doi.org/10.20453/reh.v27i3.3201.

Objectives: To determine the concentration of heavy metals cadmium and chromium leached from the tongue cleaner “Alitest” into artificial saliva and to assess oral exposure of these substances. Material and methods: Analytical pre-experimental design, to determine the amount of those substances released from the tongue cleaner onto artificial saliva and to quantified them by AAS. Assessment of exposure from oral intake values and comparison with the Provisional Tolerable Monthly Intake (PTMI) or Reference Dose (RfD) values. Results: Cadmium and chromium leachated into artificial saliva were quantified in concentrations of 0.008mg/L and 0.437 mg/L, respectively. Lead concentration was under detectable levels using the method. These values were used to estimate the oral intake for each age group and were compared to PTMI or RfD values. Conclusions: The substances were found in normal concentrations, none exceeding the maximum values of PTMI or RfD.

Palavras-chave : Cadmium; chromium; lead; leaching; tongue cleaner.

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