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|Type:||Artigo de periódico|
|Title:||Average Reference Values Of Geochemical And Geophysical Variables In Stream Sediments And Soils, State Of Paraná, Brazil|
|Abstract:||The collection of 696 samples of stream sediments and 307 of soil - horizon B, according to the standards and recommendations of the Project IGCP-259 and IGCP-360 (UNESCO and IUGS) and the determination of geochemical, geophysical and soils fertility parameters, allowed the constitution of a robust data base covering the 200,000 km 2 of the State of Paraná, southern Brazil. The 39 composite samples representing the GGRN (Global Geochemical Reference Network) from original stream sediments samples were analysed for Ag, Al 2O 3, As, Au, B, Ba, Be, Bi, Br, CaO, Cd, Ce, Cl, Co, C organic, Cr, Cs, C total, Cu, Dy, Er, Eu, F, Fe 2O 3, Ga, Gd, Ge, Hg, Ho, I, K 2O, La, Li, Lu., MgO, Mn, Mo, N, Na 2O, Nb, Nd, Ni, P, Pb, Pd, Pr, Pt, Rb, S, Sb, Se, Se, SiO 2, Sm, Sn, Sr, Tb, Te, Th, Ti, Ti, Tm, U, V, W, Y, Yb, Zn. The 43 composite samples representing the GGRN (Global Geochemical Reference Network) from original soil - B horizon samples were analysed for Ag, Al 2O 3, As, Au, B, Ba, Be, Bi, Br, CaO, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Er, Eu, F, Fe 2O 3, Ga, Gd, Ge, Hf, Hg, Ho, I, In, K 2O, La, Li, Lu, MgO, Mn, Mo, N, Na 2O, Nb, Nd, Ni, R Pb, Pd, Pr, Pt, Rb, S, Sb, Se, Se, SiO 2, Sm, Sn, Sr, Ta, Tb, Th, Ti, Ti, Tm, U, V, W, Y, Yb, Zn, Zr. In the 307 original soil samples - B horizon, were determined the soil fertility variables AI, Al exchangeable, Ca available, Mg available, B extractable, C, Cu extraclable, Zn extractable Fe extractable H + + Al 3+, Mn extractable, P available, K available, PH, S extractable, Zn extractable, V, S, T, as well as the magnetic susceptibility and total counts, eU, eTh and K by gamma-spectrometry. The average values for these variables in the State of Paraná's territory, as well as its comparison with the global averages - for the Earth's rocks and soils, allowed to establish reference values that can be used in multipurpose researches like geology, mineral exploration, delimitation of health risk areas to humans, fauna and flora, agricultural planning, environmental monitoring. The content of this data base, that describes some environmental characteristics of the Paraná's territory, represents a first approach in a regional basis that will serve so much as reference for more detailed studies focusing limited areas in the state, as for the investigation of the territory of other Brazilian states or even bordering countries.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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