Ebook: Redox: Fundamentals, Processes and Applications

Few processes are as important for environmental geochemistry as the interplay between the oxidation and reduction of dissolved and solid species. The knowledge of the redox conditions is most important to predict the geochemical behaviour of a great number of components, the mobilities of which are directly or indirectly controlled by redox processes. The understanding of the chemical mechanisms responsible for the establishment of measurable potentials is the major key for the evaluation and sensitive interpretation of data. This book is suitable for advanced undergraduates as well as for all scientists dealing with the measurement and interpretation of redox conditions in the natural environment.

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Few processes are as important for environmental geochemistry as the interplay between the oxidation and reduction of dissolved and solid species. The knowledge of the redox conditions is most important to predict the geochemical behaviour of a great number of components, the mobilities of which are directly or indirectly controlled by redox processes. The understanding of the chemical mechanisms responsible for the establishment of measurable potentials is the major key for the evaluation and sensitive interpretation of data. This book is suitable for advanced undergraduates as well as for all scientists dealing with the measurement and interpretation of redox conditions in the natural environment.

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Few processes are as important for environmental geochemistry as the interplay between the oxidation and reduction of dissolved and solid species. The knowledge of the redox conditions is most important to predict the geochemical behaviour of a great number of components, the mobilities of which are directly or indirectly controlled by redox processes. The understanding of the chemical mechanisms responsible for the establishment of measurable potentials is the major key for the evaluation and sensitive interpretation of data. This book is suitable for advanced undergraduates as well as for all scientists dealing with the measurement and interpretation of redox conditions in the natural environment.
Content:
Front Matter....Pages I-XXI
Redox Potential Measurements in Natural Waters: Significance, Concepts and Problems....Pages 1-12
Technique of Measurement, Electrode Processes and Electrode Treatment....Pages 13-23
Characterisation of the Redox State of Aqueous Systems: Towards a Problem-Oriented Approach....Pages 24-41
Comparison of Different Methods for Redox Potential Determination in Natural Waters....Pages 42-54
A Novel Approach to the Presentation of p?/pH-Diagrams....Pages 55-63
The Couple As(V) — As(III) as a Redox Indicator....Pages 64-80
In Situ Long-Term-Measurement of Redox Potential in Redoximorphic Soils....Pages 81-94
Redox Measurements as a Qualitative Indicator of Spatial and Temporal Variability of Redox State in a Sandy Forest Soil....Pages 95-110
Implementation of Redox Reactions in Groundwater Models....Pages 111-119
Variance of the Redox Potential Value in Two Anoxic Groundwater Systems....Pages 120-134
Redox Fronts in Aquifer Systems and Parameters Controlling their Dimensions....Pages 135-151
Redox Processes Active in Denitrification....Pages 152-160
Measurement of Redox Potentials at the Test Site “Insel Hengsen”....Pages 161-174
Redox Reactions, Multi-Component Stability Diagrams and Isotopic Investigations in Sulfur- and Iron-Dominated Groundwater Systems....Pages 175-188
Redox Buffer Capacity Concept as a Tool for the Assessment of Long-Term Effects in Natural Attenuation / Intrinsic Remediation....Pages 189-202
Redox Zones in the Plume of a Previously Operating Gas Plant....Pages 203-216
Degradation of Organic Groundwater Contaminants: Redox Processes and EH-Values....Pages 217-227
Microbial Metabolism of Iron Species in Freshwater Lake Sediments....Pages 228-234
Redox Measurements in Marine Sediments....Pages 235-246
Back Matter....Pages 248-251

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Few processes are as important for environmental geochemistry as the interplay between the oxidation and reduction of dissolved and solid species. The knowledge of the redox conditions is most important to predict the geochemical behaviour of a great number of components, the mobilities of which are directly or indirectly controlled by redox processes. The understanding of the chemical mechanisms responsible for the establishment of measurable potentials is the major key for the evaluation and sensitive interpretation of data. This book is suitable for advanced undergraduates as well as for all scientists dealing with the measurement and interpretation of redox conditions in the natural environment.
Content:
Front Matter....Pages I-XXI
Redox Potential Measurements in Natural Waters: Significance, Concepts and Problems....Pages 1-12
Technique of Measurement, Electrode Processes and Electrode Treatment....Pages 13-23
Characterisation of the Redox State of Aqueous Systems: Towards a Problem-Oriented Approach....Pages 24-41
Comparison of Different Methods for Redox Potential Determination in Natural Waters....Pages 42-54
A Novel Approach to the Presentation of p?/pH-Diagrams....Pages 55-63
The Couple As(V) — As(III) as a Redox Indicator....Pages 64-80
In Situ Long-Term-Measurement of Redox Potential in Redoximorphic Soils....Pages 81-94
Redox Measurements as a Qualitative Indicator of Spatial and Temporal Variability of Redox State in a Sandy Forest Soil....Pages 95-110
Implementation of Redox Reactions in Groundwater Models....Pages 111-119
Variance of the Redox Potential Value in Two Anoxic Groundwater Systems....Pages 120-134
Redox Fronts in Aquifer Systems and Parameters Controlling their Dimensions....Pages 135-151
Redox Processes Active in Denitrification....Pages 152-160
Measurement of Redox Potentials at the Test Site “Insel Hengsen”....Pages 161-174
Redox Reactions, Multi-Component Stability Diagrams and Isotopic Investigations in Sulfur- and Iron-Dominated Groundwater Systems....Pages 175-188
Redox Buffer Capacity Concept as a Tool for the Assessment of Long-Term Effects in Natural Attenuation / Intrinsic Remediation....Pages 189-202
Redox Zones in the Plume of a Previously Operating Gas Plant....Pages 203-216
Degradation of Organic Groundwater Contaminants: Redox Processes and EH-Values....Pages 217-227
Microbial Metabolism of Iron Species in Freshwater Lake Sediments....Pages 228-234
Redox Measurements in Marine Sediments....Pages 235-246
Back Matter....Pages 248-251
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