J. Phys. IV France
Volume 107, May 2003
Page(s) 1345 - 1348

J. Phys. IV France
107 (2003) 1345
DOI: 10.1051/jp4:20030550

Parametrizing the relationship between K $_{\rm d}$s and K $_{\rm p}$s in contrasting aquatic systems

D. Vignati and J. Dominik

Institut F.-A. Forel, 10 route de Suisse, 1290 Versoix, Switzerland

Partition coefficients represent a convenient way to describe metal distribution among the particulate, colloidal and truly dissolved phases in aquatic systems (see footnote 1 for definitions). In particular, the distinction between colloids and true solution is extremely relevant to element fate and bioavailability. Regrettably, measurement of colloidal and truly dissolved metals is usually not performed in routine monitoring programmes since it is costly and time consuming. We show the possibility to estimate truly dissolved metal concentrations from the more easily measured particulate and filterable metal concentrations for a range of freshwater systems and one estuary.

© EDP Sciences 2003