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vol.45 número3REDUCCION DEL OXIGENO SOBRE CALCOSITA, PIRITA Y GALENA EN MEDIO ALCALINOSEPARATION BY CAPILLARY ELECTROPHORESIS OF C-GLYCOSYLFLAVONOIDS IN Passiflora sp. EXTRACTS índice de autoresíndice de assuntospesquisa de artigos
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Boletín de la Sociedad Chilena de Química

versão impressa ISSN 0366-1644

Resumo

STEGEN, S. et al. USE OF THE FRESH WATER PLANTS ZANNICHELLIA PALUSTRIS AND MYRIOPHYLLUM ACUATIUM FOR BIOMONITORING OF Cd, Pb, AND Cu IN ANDEN RIVERS OF CHILE. Bol. Soc. Chil. Quím. [online]. 2000, vol.45, n.3, pp.449-459. ISSN 0366-1644.  http://dx.doi.org/10.4067/S0366-16442000000300016.

The species Zannichellia palustris and Myriophyllum acuatium, collected along the Loa River basin, North Chile, were chosen as possible bioindicators for Cd, Pb, and Cu. These species have a cosmopolitan distribution and can survive very sudden and large fluctuations in salinity. They are widely spread in Chile and in spite of their enormous salt tolerance they seldom penetrate to the marine habit. Quantification in water and algae samples was made by Differential Pulse Anodic Stripping Voltammetry (DPASV) after UV (water) and open wet digestion (algae). The cadmium concentrations found in algae samples ranged from 0.72±0.01 to 32±0.31 µg/g d.w. Values for lead were less and estimated 0.4±0.01 to 2.13±0.08 µg/g d.w.. Copper concentrations were between 13±0.2 and 119±0.5 µg/g d.w.. In comparison with the element concentrations in the water samples, a significant biomagnification, especially for cadmium in Myriophyllum acuatium was observed

Palavras-chave : river water plants; bioindicator; heavy metals; North Chile; Loa river.

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