Full validation of an electrothermal atomic absorption assay for zinc in hepatic tissue using a fast sample preparation procedure - Fröehlich, Pedro Eduardo; Pinto, Raquel Borges; Wortmann, André Castagna; Magalhães, Richard Borba; Schneider, Ana Cláudia Reis; Ferreira, Jéferson José; da Silveira, Themis Reverbel (Spectroscopy, 2006)