Monitoring of the environmental pollution by trace element analysis in tree-rings using synchrotron radiation total reflection X-ray fluorescence - Vives, Ana Elisa Sirito de; Moreira, Silvana; Brienza, Sandra Maria Boscolo; Medeiros, Jean Gabriel da Silva; Tomazello Filho, Mário; Zucchi, Orghêda Luiza Araujo Domingues; Nascimento Filho, Virgilio Franco do (Spectrochimica Acta Part B, 2006)