• 1. Introduction.- 1.1 Persistence of Organic Contaminants in the Subsurface Environment.- 1.2 Nonequilibrium Transport — Remediation of Contaminated Sites.- 1.3 Diffusion in Sediments and Rocks.- 2. Basics of Sorption and Diffusion in Soils and Sediments.- 2.1 Sorption of Organic Compounds in Soils and Sediments.- 2.2 Mass Transfer by Diffusion.- 3. Modeling of Diffusion Processes.- 3.1 Intraparticle Diffusion.- 3.2 Diffusion into Layers of Low Permeability.- 4. Measured Diffusion Coefficients.- 4.1 Time-Lag Experiments.- 4.2 Diffusion Coefficients from Sorption/Desorption Kinetics.- 4.3 Prediction of Diffusion Coefficients.- 5. Dissolution Kinetics of Non Aqueous Phase Liquids.- 5.1 Aqueous Solubility of Organic Compounds.- 5.2 Dissolution Kinetics.- 6. Risk Assessment — Remediation.- 6.1 Risk Assessment: Release Rates.- 6.2 Time Scales of Soil and Groundwater Remediation.- 6.3 Transport by Diffusion Compared to Advection.- References.- Appendices.- I. Analytical Methods: TCE and Phenanthrene.- II. Methods of Solids Characterization.- III. TCE-Diffusion Data: Time-Lag Method.- IV. Tracer Diffusion Data.- V. Examples for Long-Term Sorption Kinetics of Phenanthrene.

'... this book forms a very useful reference for data on diffusion parameters and also on methdology for quantifying contaminant transport related to diffusional processes.' Episodes, 22:4 (1999)

• 1. Introduction.- 1.1 Persistence of Organic Contaminants in the Subsurface Environment.- 1.2 Nonequilibrium Transport — Remediation of Contaminated Sites.- 1.3 Diffusion in Sediments and Rocks.- 2. Basics of Sorption and Diffusion in Soils and Sediments.- 2.1 Sorption of Organic Compounds in Soils and Sediments.- 2.2 Mass Transfer by Diffusion.- 3. Modeling of Diffusion Processes.- 3.1 Intraparticle Diffusion.- 3.2 Diffusion into Layers of Low Permeability.- 4. Measured Diffusion Coefficients.- 4.1 Time-Lag Experiments.- 4.2 Diffusion Coefficients from Sorption/Desorption Kinetics.- 4.3 Prediction of Diffusion Coefficients.- 5. Dissolution Kinetics of Non Aqueous Phase Liquids.- 5.1 Aqueous Solubility of Organic Compounds.- 5.2 Dissolution Kinetics.- 6. Risk Assessment — Remediation.- 6.1 Risk Assessment: Release Rates.- 6.2 Time Scales of Soil and Groundwater Remediation.- 6.3 Transport by Diffusion Compared to Advection.- References.- Appendices.- I. Analytical Methods: TCE and Phenanthrene.- II. Methods of Solids Characterization.- III. TCE-Diffusion Data: Time-Lag Method.- IV. Tracer Diffusion Data.- V. Examples for Long-Term Sorption Kinetics of Phenanthrene.

'... this book forms a very useful reference for data on diffusion parameters and also on methdology for quantifying contaminant transport related to diffusional processes.' Episodes, 22:4 (1999)

• 1. Introduction.- 1.1 Persistence of Organic Contaminants in the Subsurface Environment.- 1.2 Nonequilibrium Transport — Remediation of Contaminated Sites.- 1.3 Diffusion in Sediments and Rocks.- 2. Basics of Sorption and Diffusion in Soils and Sediments.- 2.1 Sorption of Organic Compounds in Soils and Sediments.- 2.2 Mass Transfer by Diffusion.- 3. Modeling of Diffusion Processes.- 3.1 Intraparticle Diffusion.- 3.2 Diffusion into Layers of Low Permeability.- 4. Measured Diffusion Coefficients.- 4.1 Time-Lag Experiments.- 4.2 Diffusion Coefficients from Sorption/Desorption Kinetics.- 4.3 Prediction of Diffusion Coefficients.- 5. Dissolution Kinetics of Non Aqueous Phase Liquids.- 5.1 Aqueous Solubility of Organic Compounds.- 5.2 Dissolution Kinetics.- 6. Risk Assessment — Remediation.- 6.1 Risk Assessment: Release Rates.- 6.2 Time Scales of Soil and Groundwater Remediation.- 6.3 Transport by Diffusion Compared to Advection.- References.- Appendices.- I. Analytical Methods: TCE and Phenanthrene.- II. Methods of Solids Characterization.- III. TCE-Diffusion Data: Time-Lag Method.- IV. Tracer Diffusion Data.- V. Examples for Long-Term Sorption Kinetics of Phenanthrene.

'... this book forms a very useful reference for data on diffusion parameters and also on methdology for quantifying contaminant transport related to diffusional processes.' Episodes, 22:4 (1999)