pXRF in tropical soils: Methodology, applications, achievements and challenges

Sérgio Henrique Godinho Silva, Bruno Teixeira Ribeiro, Marcelo Braga Bueno Guerra, Hudson Wallace Pereira de Carvalho, Guilherme Lopes, Geila Santos Carvalho, Luiz Roberto Guimarães Guilherme, Mauro Resende, Marcelo Mancini, Nilton Curi, Rogerio Borguete Alves Rafael, Valeria Cardelli, Stefania Cocco, Giuseppe Corti, Somsubhra Chakraborty, Bin Li, David C. Weindorf