Total reflection X-ray fluorescence with synchrotron radiation: analysis of fish sample for evaluation of the environmental quality and risks to human health - Vives, Ana Elisa Sirito de; Brienza, Sandra Maria Boscolo; Moreira, Silvana; Zucchi, Orghêda Luiza Araújo Domingues (Seminário Latinoamericano de Análisis por Técnicas de Rayos X - SARX, 2004)