Multi-method Study on Aquatic Humic Substances from the "Rio Negro" - Amazonas State/Brazil: Emphasis on Molecular-Size Classification of their Metal Contents

Multi-method Study on Aquatic Humic Substances from the "Rio Negro" - Amazonas State/Brazil: Emphasis on Molecular-Size Classification of their Metal Contents

The aquatic humic substances investigated in this study were conventionally isolated from Rio Negro waters - Amazonas State/Brazil by means of the collector XAD 8. Molecular spectroscopy investigations of these humic substances using ¹H-NMR and 13C-NMR indicated the presence of high aromaticity with...

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Bibliographic Details
Main Authors: Rocha J.C., Sargentini Jr É., Toscano I.A.S., Rosa A.H., Burba P.
Format: Article
Language:English
Published: Sociedade Brasileira de Química 1999-01-01
Series:Journal of the Brazilian Chemical Society
Subjects:
aquatic humic substances
Rio Negro
nuclear magnetic resonance
trace metals
molecular-size distribution
multistage ultrafiltration
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000300002

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http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000300002

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