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 Differences between humic substances from riverine, estuarine, and marine environments observed by fluorescence spectroscopy
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5495

title: Differences between humic substances from riverine, estuarine, and marine environments observed by fluorescence spectroscopy
authors: Esteves, V. I.
Duarte, A. C.
keywords: Fulvic Acid
XAD-4
Open Ocean
Natural Organic Matter
issue date: 2001
abstract: Sixteen samples of fulvic acids and XAD-4 fractions of riverine, estuarine, coastal, and open ocean origin have been studied by emission and synchronous molecular fluorescence spec- troscopy. Certain features of the molecular fluorescence are related to the nature, the con- tent, and the origin of those aquatic humic substances (HS). Riverine HS appear several times richer in fluorophores than marine HS, which can be well observed by emission fluo- rescence spectroscopy. Synchronous-scan spectra of fulvic acids and of XAD-4 fractions from the aquatic environments studied, emphasized the quality differences of their fluoro- phores.These features are useful as tracers of humic substances related with their natural environment source or even with their anthropogenic origin
URI: http://hdl.handle.net/10773/5495
ISSN: 0323-4320
source: Acta Hydrochimica et Hydrobiologica
appears in collectionsDQ - Artigos
PT Mar - Artigos
Ria - Artigos

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