01399nam a2200337 a 450000100080000000500110000800800410001910000200006024501280008026001250020830000110033352004090034465000090075365000160076265000190077865000200079765000100081765000120082765000090083965300260084870000180087470000200089270000200091270000190093270000160095170000160096770000230098370000150100670000190102170000210104020962652024-02-05       2007    bl uuuu     u00u1 u    #d1 aCUNHA, T. J. F.  aTerra preta de indio "Dark Earth Soils"bchemical and spectroscopic characterization of humic acids.h[electronic resource]  aIn: INTERNATIONAL AGRICHAR INITIATIVE (IAI) 2007 CONFERENCE, 2007, Terrigal, Australia. [Abstracts]. Terrigal: IAIc2007  ap. 38.  aThe HA of Amazonian dark earth soils (Terra Preta de Índio) from Brazilian territory were characterized using ultraviolet-visible, Fourier transform diffuse reflectance infrared, fluorescence excitation and emission, electron paramagnetic resonance, and nuclear magnetic resonance spectroscopy, thermogravimetric analysis, elemental composition, and measurement of acidity (total, carboxylic, phenolic).  aSoil  aAgricultura  aCarbonização  aCarvão Vegetal  aLenha  aMadeira  aSolo  aTerra preta de índio1 aMADARI, B. E.1 aMARTIN NETO, L.1 aCANELLAS, L. P.1 aNOVOTNY, E. H.1 aMELO, V. B.1 aSIMÕES, M.1 aSILVA, W. T. L. da1 aMILORI, D.1 aPETRERE, V. G.1 aSANTOS, G. de A.