Trace metal bioavailability

Luoma, S.N. and G.W. Bryan. 1979. Trace metal bioavailability modehng chemical and biological interactions of sediment-bound zinc. Pages 577-609 in E.A. Jenne (ed.). Chemical Modeling in Aqueous Systems. Amer. Chem. Soc., Sympos. Ser. 93, Washington, D.C. 

Brezonik, P.L., King, S.O. and Mach, C.E. (1991) The influence of water chemistry on trace metal bioavailability and toxicity to aquatic organisms. In Metal Ecotoxicology. Concepts and Applications (eds Newman, M.C. and McIntosh, A.W.). Lewis Publications, Chelsea, MI, pp. 1-31. 

Lebourg, A., Sterckeman, T., Ciesielski, H. and Proix, N. (1996) Suitability of chemical extraction to assess risks of toxicity induced by soil trace metal bioavailability. Agronomie, 16, 201-215. 

Poirier L, Berthet B, Amiard JC, Jeantet AY, Amiard-Triquet C. 2006. A suitable model for the biomonitoring of trace metal bioavailabilities in estuarine sediments the annelid polychaete Nereis diversicolor. J Mar Biol Assoc UK 86 71-82. 

Rainbow PS, Fialkowski W, Sokolowski A, Smith BD, Wolowicz M. 2004. Geographical and seasonal variation of trace metal bioavailabilities in the Gulf of Gdansk, Baltic Sea using mussels (Mytilus trossulus) and barnacles (Balanus improvisus) as biomonitors. Mar Biol 144 271-286. 

Trace Metal Bioavailability Modeling Chemical and Biological Interactions of Sediment-Bound Zinc... 

LUOMA AND BRYAN Trace Metal Bioavailability Results... 

Equilibrium models are widely used in assessments of trace metal bioavailability, toxicity, and transport through the environment. Properly applied, equilibrium models are powerful tools in such assessments. Due to a variety of factors, however, equilibrium modeling often falls short of its full potential. One problem, of special importance in equilibrium characterizations, is simplistic modeling. The use of simplistic chemical models is particularly important because it affects not only the modeling of complex natural systems, but also modeling of relatively simple chemical media used to generate primary thermodynamic data. 

Hgure 2 Percentage metal extracted, relative to the total concentration, from marine sediments by different reagents, enzymes, and the gut fluid from cod. HCI = 1 mol I HCI HOAc=25% glacial acetic acid NaOH =0.1 mol I NaOH Pepsin = Pepsin A pH 2 Trypsin = Trypsin ll-S pH 7.6 Gut fluid (1) = natural filtered intestinal fluid, pH 7 Gut fluid (2) = natural filtered intestinal fluid, pH 2. (A) Cu and (B) Zn. (Adapted from Turner A and Olsen YS (2000) Chemical versus enzymatic digestion of contaminated estuarine sediment Relative importance of iron and manganese oxides in controlling trace metal bioavailability. Estuarine, Coastal and Shelf Science 51 717-728.)... 

V. Bragigand, B. Berthet, J.C. Amiard, and P.S. Rainbow. Estimates of trace metal bioavailability to humans ingesting contaminated oysters. Food and Chemical Toxicology 42 1893-1902,2004. 

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