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Environmental Sciences - Pollution and Remediation | Environmental Compartments - Equilibria and Assessment of Processes Between Air, Water, Sediments

Environmental Compartments

Equilibria and Assessment of Processes Between Air, Water, Sediments and Biota

Duursma, Egbert K., Carroll, JoLynn

Softcover reprint of the original 1st ed. 1996, XV, 279 p.

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  • About this textbook

In order to achieve viable solutions to present-day environmental problems, professionals must understand the spatial and temporal links which exist between the different environmental compartments of biota, air, water, and land and aquatic sediments. This book explains many of the seminal theories used to identify links and predict the movement of natural and anthropogenic chemical compounds among environmental compartments. Theories are presented within the context of laboratory and field examples. Examples are given for many issues of public concern. New insights into theories regarding accumulation of contaminants such as PCBs are presented, challenging the passive acceptance of previously held dogma. The book is primarily for university education, but is also intended as a resource for environmental scientists and policymakers. To encourage self-study a number of exercises are incorporated in the text and two demo models are provided on a diskette, one showing radionuclide transport from dumped nuclear waste in the Kara Sea, the second illustrating the role of biodiversity in coastal zone management.

Content Level » Graduate

Keywords » Carbondioxide - Diffusion - Distribution coefficient - Distributionskoeffizient - Kohlendioxid - Oxygen - Pesticides - Pestizide - Radionukleide - Radionuklids - Sauerstoff - environment

Related subjects » Ecology - Environmental Science & Engineering - Nature Conservation & Biodiversity - Paleoenvironmental Sciences - Pollution and Remediation - Soil Science

Table of contents 

1 Introduction.- 2 Processes and equilibria between compartments.- 2.1 Principles.- 2.2 Phases or compartments.- 2.2.1 Water.- 2.2.2 Particulate matter (PM).- 2.2.3 Bottom sediments.- 2.2.4. Living organisms.- 2.3 Processes and equilibria.- 2.3.1 Processes/equilibria in the liquid sea water compartment.- 2.3.2 Processes/equilibria between water and particulate matter compartments.- 2.3.3 Processes/equilibria between water and living compartments.- 3 Complexing metal- and radionuclide-sediment reactions.- 3.1 Complexation of metals by dissolved organic matter.- 3.1.1 Experiments of competition between complexation and adsorption.- 3.2 Results on radionuclide sorption by marine sediments.- 3.2.1 Methodologies of Kd determination.- 3.2.2 Dependency of Kds on concentrations in solution and amounts of PM in suspension and in consolidated sediments.- 3.2.3 Correlations of Kds with sediment and metal properties.- 3.2.4 Intercomparison of Kd determinations.- 4 Diffusion principles.- 4.1 Theories.- 4.1.1 Diffusion from constant and instantaneous sources.- 4.1.2 Diffusion and sorption.- 4.2 Simple methods of determining diffusion coefficients.- 4.2.1 Constant source technique.- 4.2.2 Instantaneous source technique.- 4.3 Experiments on hindrance of diffusing ions in sediments.- 4.3.1 Mean Free Path.- 4.3.2 Temperature.- 4.3.3 Electrical potential retention in pore water.- 4.3.4 Surface action.- 4.3.5 Effect of hydrostatic pressure on diffusion in sediments.- 4.4. Summary on effects on molecular diffusion in bottom sediments.- 5 Organochlorines.- 5.1 Introduction.- 5.2 PCB and DDT behaviour in water, PM and sediment compartments.- 5.2.1 Partitioning of PCBs between water and PM.- 5.2.2 DDT and PCB behaviour in organisms.- 5.3 The eel case.- 5.3.1 Introduction.- 5.3.2 A simulation experiment.- 5.3.3 Discussion.- 5.4 Pesticide use and contamination with Tambak (Indonesian brackish-water) aquaculture.- 5.4.1 Environmental contamination in the tropics.- 5.5 Possible DDT and PCB partitioning between air and man.- 6 Competitive reactions and effects of conservativity.- 6.1 Introduction.- 6.4 Principles of conservativity.- 6.3 Model study of competitive processes in an estuary containing a turbidity maximum.- 6.3.1 Boundary conditions.- 6.3.2 Reactions.- 6.3.3 Simulation model.- 6.3.4 Results and discussion.- 6.4 Residence times of metals in an estuary.- 6.4.1 Theory.- 6.4.2 Example of river branch.- 6.5 Sources and sinks of chemical constituents in estuaries.- 6.5.1 Introduction.- 6.5.2 The Ganges-Brahmaputra river-estuarine zone.- 6.5.3 Ba and 226Ra Distributions.- 6.5.4 Sources of Ba and 226Ra.- 6.5.5 Fluxes of Ba and 226Ra.- 7 Examples of distribution patterns in estuaries and seas.- 7.1 Budget of plutonium and some other nuclides in an estuary.- 7.2 Metals in the Western Mediterranean.- 7.3 PCB budgets.- 7.3.1 Western Mediterranean.- 7.3.2 Baltic.- 7.3.3 Antarctic atmosphere.- 7.3.4 Hypothetical global PCB equilibrium between atmosphere, water and man.- 7.4 The food chain accumulation paradox.- 8 Nuclear waste in the Kara Sea.- 8.1 Introduction.- 8.2 History of radioactive waste dumping in the Kara Sea.- 8.3 Inventory of dumped objects.- 8.4 Environmental concentrations of radionuclides.- 8.5 Predicting future radionuclide releases.- 8.6 Modelling radionuclide dispersion.- 8.6.1 Radionuclide exchange processes.- 8.6.2 Approaches to determining site-specific Kds.- 8.6.3 Theoretical investigation of site-specific Kds.- 8.6.4 Laboratory determinations of distribution coefficients.- 8.6.5 Field experimentation.- 8.6.6 Summary of findings.- 8.6.7 Models for predicting radionuclide dispersion.- 8.7 Impact assessment.- 8.7.1 Global impacts.- 8.7.2 Regional impacts.- 8.7.3 Local impact.- 8.7.4 Conclusions.- 9 Globel oceanic and atmospheric stability of oxygen.- 9.1 Oxygen budgets.- 9.1.1. Globel budgets.- 9.1.2 Oxygen and exhaust gasses between a population centre and atmosphere.- 9.2 Relation to CO2 budgets.- 9.2.1 Atmosphere and ocean budgets.- 9.2.2 The Antarctic paradox.- 9.3 Time-dependent process.- 9.3.1 Environmental effects on photosynthesis and respiration.- 9.3.2 Short time scale oxygen regulatory feedbacks.- 9.3.3 Global short-term feedback possibilities.- 9.3.4 Final conclusion.- 9.4 Future limit(s) of ocean pH due to fossil-fuel produced CO2.- 10 Case studies on Environmental Impact Assessment (EIA).- 10.1 Introduction.- 10.2 Techniques.- 10.2.1 Environmental Impact Assessment (EIA).- 10.2.2 Best Professional Judgement (BPJ).- 10.3 A Delta-case EIA study.- 10.4 Assessment of diffusion of radionuclides from potential HLW disposal.- 10.5 Amoeba assessment.- 10.6 COSMO-BIO assessment.- Appendix I: Answers to a question and exercises.- Appendix II: Kara Sea box model user information.- Appendix Ills COSMO-BIO assessment.- References.

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