The effect of different concentrations of Cr(III) and (VI) in diluted river water on the root growth of Allium cepa L using SR-TXRF technique - Palacio, Soraya Moreno; Rossi, Fabio L; Cunha, Marcia B; Nozaki, Jorge; Rizzutto, Márcia de Almeida (Reunião de Trabalho sobre Física Nuclear no Brasil, 2005)