Understanding Variation in Partition Coefficient, Kd, Values

d5.1. Background CCCC(1997), Lindsay (1979), Morel (1983), Nordstrom and Munoz (1985), Sposito (1989, 1994),5.1and solubility database for radionuclides are also discussed.of databases for these adsorption models and the status of the MINTEQA2 aqueous speciationconceptual models the code contains to quantify adsorption. Issues pertaining to the availabilityParticular attention is given to the capabilities of EPA’s MINTEQA2 code, including the types of studies. and their use in addressing technical defensibility issues associated with data from KThe purpose of this chapter is to provide a brief conceptual overview of chemical reaction codesenvironmental contamination.legal aspects of risk and performance assessment studies of waste disposal and mitigation ofunderstanding is additionally important because these models are used for both the scientific andunderstanding of the capabilities and application of chemical reaction models is essential. Thisrelative to the concentrations and mobility of contaminants that may leach from waste, anBecause of the great importance of the aqueous speciation, adsorption, and solubility processesequations that govern these calculations.discussions and examples of specific applications relative to the thermodynamic principles andStumm and Morgan (1981), and others. The reader is referred to these sources for detailedreference books, such as Bolt and Bruggenwert (1978), Garrels and Christ (1965), ...