Cadmium and lead concentrations in yerba mate leaves from agroforestry and plantation systems: An international survey in South America

Ederlan Magri, Alice Teresa Valduga, Itamar Luís Gonçalves, Julierme Zimmer Barbosa, Diego de Oliveira Rabel, Iohanna M.N.R. Menezes, Patricia de A. Nascimento, Andrea Oliveira, Rodrigo Studart Corrêa, Antônio Carlos Vargas Motta