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Spectroscopic characteristics of humates isolated from different soils

Fasurova, N.,Vysoke Uceni Technicke, Brno (Czech Republic). Ustav Fyzikalni a Aplikovane Chemie ; Pospisilova, L.,Mendelova Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin

Soil and Water Research - UZEI (Czech Republic), 2011-01, Vol.6 (3), p.147-152 [Periódico revisado por pares]

Prague: Czech Academy of Agricultural Sciences (CAAS)

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Título:
Spectroscopic characteristics of humates isolated from different soils
Autor: Fasurova, N.,Vysoke Uceni Technicke, Brno (Czech Republic). Ustav Fyzikalni a Aplikovane Chemie ; Pospisilova, L.,Mendelova Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin
Assuntos: Absorbance ; ACIDE FULVIQUE ; ACIDE HUMIQUE ; ACIDO FULVICO ; ACIDO HUMICO ; ARABLE LAND ; ASH CONTENT ; AZOTE ; CALIDAD ; CAMBISOL ; CAMBISOLES ; CAMBISOLS ; CARBON ; Carbon content ; CARBONE ; CARBONO ; CHEMICAL COMPOSITION ; Chemical compounds ; CHERNOZEM ; CHERNOZEMS ; COLOR ; COLOUR ; COMPOSE ORGANIQUE ; COMPOSICION QUIMICA ; COMPOSITION CHIMIQUE ; COMPUESTOS ORGANICOS ; CONTENIDO DE CENIZA ; COULEUR ; ESPECTROMETRIA ; ESPECTROSCOPIA ULTRAVIOLETA ; FLUORESCENCE ; FLUORESCENCIA ; Fluorophores ; Fractionation ; FULVIC ACIDS ; GENETIC SOIL TYPES ; GRASSLANDS ; HERBAGE ; HIDROGENO ; http://www.fao.org/aos/agrovoc#c_10935 ; http://www.fao.org/aos/agrovoc#c_1224 ; http://www.fao.org/aos/agrovoc#c_1301 ; http://www.fao.org/aos/agrovoc#c_1533 ; http://www.fao.org/aos/agrovoc#c_15972 ; http://www.fao.org/aos/agrovoc#c_1773 ; http://www.fao.org/aos/agrovoc#c_1794 ; http://www.fao.org/aos/agrovoc#c_18948 ; http://www.fao.org/aos/agrovoc#c_28569 ; http://www.fao.org/aos/agrovoc#c_3219 ; http://www.fao.org/aos/agrovoc#c_3366 ; http://www.fao.org/aos/agrovoc#c_3685 ; http://www.fao.org/aos/agrovoc#c_3693 ; http://www.fao.org/aos/agrovoc#c_3724 ; http://www.fao.org/aos/agrovoc#c_5192 ; http://www.fao.org/aos/agrovoc#c_5384 ; http://www.fao.org/aos/agrovoc#c_5477 ; http://www.fao.org/aos/agrovoc#c_6400 ; http://www.fao.org/aos/agrovoc#c_665 ; http://www.fao.org/aos/agrovoc#c_7283 ; HUMIC ACIDS ; Humic substances ; HUMUS ; HYDROGEN ; HYDROGENE ; Mathematical analysis ; NITROGEN ; NITROGENO ; Optics ; Organic carbon ; ORGANIC COMPOUNDS ; Organic soils ; OXIGENO ; OXYGEN ; OXYGENE ; PRADERAS ; QUALITE ; QUALITY ; Quality assessment ; sfs and uv-vis spectroscopy ; soil humic substances ; Soil properties ; Soils ; Spectra ; SPECTROMETRIE ; SPECTROMETRY ; SPECTROSCOPIE UV ; TENEUR EN CENDRES ; TERRE ARABLE ; TIERRAS ARABLES ; TIPOS GENETICOS DE SUELOS ; Total organic carbon ; TYPE DE SOL GENETIQUE ; ULTRAVIOLET SPECTROPHOTOMETRY ; Wavelengths
É parte de: Soil and Water Research - UZEI (Czech Republic), 2011-01, Vol.6 (3), p.147-152
Notas: P34
2011000748
http://www.agriculturejournals.cz/web/swr.htm
Descrição: Spectral characterisation of soil humic substances is one of the important methods for their quality identification. In this work, two optical methods (UV-VIS and SFS) were used. The absorbance in the spectral range of 300-700 nm was measured using spectrometer Varian Cary 50 Probe. Fluorescence (SFS) in the range of 255-655 nm was performed by spectrofluorimeter Aminco Bowman. Five Czech soil humates samples (Leptic Cambisol, Haplic Cambisol, Eutric Cambisol 1-arable soil, Eutric Cambisol 2-grassland, Haplic Chernozem) were compared. The basic soil properties were determined by the commonly used methods. Colour indexes (Q4/6) were calculated from the absorbance of humic substances in UV-VIS spectral range. Fluorescence indexes (F) were calculated from SFS spectra at 55 nm (as a ratio RFI468/RFI522). The classical method of humic substances fractionation was applied to assess their quality. The calculated parameters from different spectral regions were compared with results of humic substances fractionation. There was a linear correlation between carbon concentration and fluorescence indexes (R2 = 0.91), between total organic carbon content in soil and fluorescence indexes (R2 = 0.92), as well as between colour indexes (Q4/6) and humic substances content. The same main fluorophores at the wavelengths 467/522 nm were observed in all soil humates samples.
Editor: Prague: Czech Academy of Agricultural Sciences (CAAS)
Idioma: Inglês

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Spectroscopic characteristics of humates isolated from different soils

Fasurova, N.,Vysoke Uceni Technicke, Brno (Czech Republic). Ustav Fyzikalni a Aplikovane Chemie ; Pospisilova, L.,Mendelova Univ., Brno (Czech Republic). Ustav Agrochemie, Pudoznalstvi, Mikrobiologie a Vyzivy Rostlin

Prague: Czech Academy of Agricultural Sciences (CAAS)

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