Evaluation of micro-energy dispersive X-ray fluorescence spectrometry for the analysis of plant materials - Guerra, Marcelo Braga Bueno; Schaefer, Carlos Ernesto Gonçalves Reynaud; Carvalho, Gabriel Gustinelli Arantes de; Souza, Paulino Florêncio de; Santos Júnior, Dário; Nunes, Lidiane Cristina; Krug, Francisco José (Journal of Analytical Atomic Spectrometry, 2013)