Microwave-assisted digestion with a single reaction chamber for mineral fertilizer analysis by inductively coupled plasma optical emission spectrometry - Fioroto, Alexandre Minami; Kelmer, Gislayne Aparecida Rodrigues; Albuquerque, Luiza Gimenes Rodrigues; Paixão, Thiago Regis Longo Cesar da; Oliveira, Pedro Vitoriano de (Spectroscopy Letters, 2017)