Dos Santos, Larissa MacedoMartin-Neto, LadislauDe Melo, Wanderley Jose [UNESP]Nogueira, Ana Rita De Araujo2015-03-182015-03-182014-10-28Communications In Soil Science And Plant Analysis. Philadelphia: Taylor & Francis Inc, v. 45, n. 19, p. 2495-2501, 2014.0010-3624http://hdl.handle.net/11449/116929Different procedures have been proposed to decompose soil samples. Most of them regard determination with fertility aims. In this case, the contents available to the plants are considered. On the other hand, there are procedures to determine total content. The objective of this work was to propose a new decomposition procedure to determine barium (Ba), cobalt (Co), chromium (Cr), copper (Cu), manganese (Mn), nickel (Ni), vanadium (V), and zinc (Zn) total content in tropical soils with high content of oxides and silicate. According to the results, the digestion procedure proposed in this study provided satisfactory results for the contents recovery for the elements Ba, Co, Cr, Cu, Mn, Ni, V, and Zn, above 90%, and the use of inverted aqua regia, hydrogen peroxide (H2O2), hydrofluoric acid (HF), pre-digestions and agitation was shown as a new alternative for the high silicate content soil sample total digestion, such as the oxisols.2495-2501engsoil total digestionsilicateOxisolsArtigo10.1080/00103624.2014.941858WOS:000342517200001Acesso restrito