Gamma-ray and X-ray fluorescence spectrometry on radionuclides, macro and micronutrients from South American coffee powder. - Silveira, Marcilei Aparecida Guazzelli da; Loureiro, K; Coelho, D. O.; Medina, Nilberto Heder; Rizzutto, Márcia de Almeida; Curado, Jessica Fleury (Encontro de Física, 2016)