INVESTIGADORES
FERNANDEZ CIRELLI Alicia
artículos
Título:
Comparision of marine and river water humic substances in a Patagonian environment (Argentina)
Autor/es:
M. SCAPINI; V. CONZONNO; V. BALZARETTI; A. FERNÁNDEZ CIRELLI
Revista:
AQUATIC SCIENCES
Editorial:
BIRKHAUSER VERLAG AG
Referencias:
Lugar: Berlín; Año: 2010 vol. 72 p. 1 - 12
ISSN:
1015-1621
Resumen:
Structural aspects of humic substances (HSs) inmarine waters of Engano Bay (Atlantic Ocean) and waterfrom the Chubut River (Patagonia, Argentina) were compared.The HSs were isolated, purified, and analyzed usinga multiple-method approach for structural characterization:elemental analysis, nuclear magnetic resonance (13C and1H NMR), infrared spectroscopy (FTIR), UV-visibleabsorption and fluorescence. Similarities between themarine and freshwater components were evaluated on thebasis of N and O contents, H/C and C/N atomic ratios,infrared bands from nitrogen-containing and carboxylicgroups, percentage of functional groups obtained fromNMR spectra, spectral slope coefficient of absorptionspectra, absorbance ratios at 250 and 365 nm (E2/E3),aromaticity, excitationemission matrices and fluorescencequantum yield. Both the Engano Bay and Chubut River
