Análise de fluorescência de substâncias húmicas extraídas da água, solo e sedimento da Lagoa dos Patos - MS Fluorescence analysis of huic substances extracted from water, soil and sediment of the Patos Lagoon - MS

Química Nova. 2008;31(6):1324-1329 DOI 10.1590/S0100-40422008000600010

 

Journal Homepage

Journal Title: Química Nova

ISSN: 0100-4042 (Print); 1678-7064 (Online)

Publisher: Sociedade Brasileira de Química

Society/Institution: Sociedade Brasileira de Química

LCC Subject Category: Science: Chemistry

Country of publisher: Brazil

Language of fulltext: Portuguese, Spanish; Castilian, English

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AUTHORS

Júlio César Rodrigues de Azevedo
Jorge Nozaki

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Time From Submission to Publication: 12 weeks

 

Abstract | Full Text

<abstract language="eng">The humic substances were extracted from sediments, water and soil close to the Lagoa dos Patos-MS. The characterization was performed through fluorescence emission. In the HSs it is possible to see strong indications of incorporation of compounds originating from lignin degradation, confirmed by fluorescence emission (EEM and synchronous spectra). These differences observed in HSs may be due to tropical regions displaying a great variety of vascular plants and aquatic macrophytes that contribute natural organic matter. The seasonality effect also causes the entrance of pedogenic material and the suspension of sediments by the action of winds.