0.300 g of moringa seeds byproduct were added to Erlenmeyer flasks (125 mL) with a solution enriched with
increasing concentrations of the toxic heavy metals studied.
For this, an adjusted and buffered solution at pH 5.0, was used
containing the following metal concentrations: Cd (0.20 μg mL-1),
Pb (0.40 μg mL-1), Cr (2.0 μg mL-1), values that correspond to
40 times the maximum allowed value by the Ordinance n. 518
MS (Brasil, 2004).