Multivariate curve resolution of multidimensional excitation–emission quenching matrices of a Laurentian soil fulvic acid

Fluorescence excitation–emission matrices (EEM) of aqueous solutions of Laurentian soil fulvic acid (LFA) at three concentrations (50, 75 and 100 mg/l) were obtained at two pH values (pH = 4.0 and 6.0) and as function of the Cu(II) ion concentration. The presence of Cu(II) ion provokes quenching of...

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Veröffentlicht in:	Chemosphere (Oxford) 2006-09, Vol.64 (11), p.1939-1948
Hauptverfasser:	Esteves da Silva, Joaquim C.G., Tavares, Maria J.C.G., Tauler, Romá
Format:	Artikel
Sprache:	eng
Schlagworte:	aqueous solutions Benzopyrans - chemistry copper Cu(II) complexation Earth sciences Earth, ocean, space Exact sciences and technology fluorescence excitation-emission matrices Fluorescence excitation–emission matrices (EEM) Fulvic acids Geochemistry Hydrogen-Ion Concentration Multivariate Analysis multivariate curve resolution Multivariate curve resolution (MCR) Potentiometry Quenching profiles Soil - analysis Soil and rock geochemistry soil organic matter Soils spectrometers Stability constants Surficial geology
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