INQUIMAE   12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
artículos
Título:
A link between lead and cadmium kinetic speciation in seawater and accumulation by the green algae Ulva lactuca
Autor/es:
J.O. MUSE; C.N. CARDUCCI; J.D. STRIPEIKIS; M.B. TUDINO; F.M. FERNANDEZ
Revista:
ENVIRONMENTAL POLLUTION
Editorial:
Elsevier
Referencias:
Año: 2006 vol. 141 p. 126 - 126
ISSN:
0269-7491
Resumen:
In this work, studies on the bioaccumulation of Cd and Pb by Ulva lactuca at different sites of Gulf San Jorge (Patagonia, Argentina) are presented. Higher values of bioaccumulated Cd were found in Punta Maqueda – a site believed to serve as a control – in comparison to those in Punta Borja, a place highly exposed to urban and industrial activities. Consequently; the labile fractions of Cd and Pb in seawater were determined with a flow injection-preconcentration manifold interfaced to a graphite furnace-atomic absorption spectrometer (FI-GFAAS). The results obtained by kinetic speciation showed that the variable that correctly explains heavy metals accumulation in the alga, is the labile metal fraction in seawater. We propose to use an enhancement ratio – on the basis of the kinetically labile metal fraction – for calculation of the metal accumulated by the alga relative to its environment