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Metals speciation organisms

Campbell, P. G. C. (1995). Interactions between trace metal and aquatic organisms a critique of the free-ion activity model. In Metal Speciation and Bioavailability in Aquatic Systems, eds. Tessier, A. and Turner, D. R., Vol. 3, IUPAC Series on Analytical and Physical Chemistry of Environmental Systems, Series eds. Buffle, J. and van Leeuwen, H. P., John Wiley Sons, Ltd, Chichester, pp. 45-102. [Pg.198]

Metal speciation is discussed here from the perspective of the speciation occurring in natural freshwater environments. This speciation is relevant for interactions of metals with aquatic organisms. [Pg.211]

In this case, permeability depends only on factors that are outside the organism. Such a scenario might occur in an eutrophic lake where metal speciation is controlled by natural organic ligands forming inert complexes. [Pg.502]

Buffle, J. (1990). The ecological role of aquatic organic and inorganic components, deduced from their nature, circulation and interactions. In Metal Speciation in the Environment, eds. Broeckaert, J. A. C., Guger, S. and Adams, F., Springer-Verlag, Berlin, pp. 469-501. [Pg.523]

Speciation indnces transformation of contaminants, affecting mainly their retention and redistribntion in the subsurface. As an illnstration, we consider three stndies that deal with speciation of trace metals and organic contaminants in the subsurface. [Pg.342]

After a brief introduction on terminology, this overview summarizes the experimental and theoretical modelling methods applied in trace metal speciation studies, emphasizing the dissolved fraction as defined by 0.95 pm filtration. The experimental approach comprises interactions with organic - and inorganic ligands, speciation schemes, biological experiments and interactions with particles and colloids. [Pg.3]

Langston, W.3. and Bryan,G.W., 1984. The relationships between metal speciation in the environment and bioaccumulation in aquatic organisms. In C.3.M. Kramer and 3.C. Duinker (eds), Complexation of Trace Metals in Natural Waters. Nijhoff/3unk Publ., the Hague, pp. 375-392. [Pg.30]

As shown in the preceding section, toxic metals may be present in a wide variety of physicochemical forms in surface waters, wastewater, landfill leachates, soils, or sediments. Early on, metal speciation in surface waters was determined, using a chemical approach (Giesy et al., 1978). We now know that metal speciation affects their bioavailability and potential toxicity to aquatic organisms (Tessier and Turner,... [Pg.216]


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Metal speciation

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