Samples were metallised by gold sputtering for all observations. A 500 mg L solution of CrVI was prepared from K2Cr2O7 Merck, 99% in distilled/deionised water.
Estudios de adsorción y análisis de cromo Se empleó una solución inicial de 500 mg L de CrVI preparada a partir de K2Cr2O7 Merck, 99%, en agua destilada y desionizada.