Dos Anjos, Vanessa E.; Rohwedder, Jarbas R.; Cadore, Solange; Abate, Gilberto; Grassi, Marco T. (2014). Montmorillonite and vermiculite as solid phases for the preconcentration of trace elements:  doi:10.1016/j.clay.2014.07.013  Montmorillonite and vermiculite as solid phases for the preconcentration of trace elements: Adsorption and desorption studies of As, Ba, Cu, Cd, Co, Cr, Mn, Ni, Pb, Sr, V, and Zn – ScienceDirect