Chapter Ⅰ Selenium in the Geological Environment Section 1 Important Concepts in Geology 1.1 Minerals 1.2 Rocks 1.3 Strata Section 2 Selenium in Rocks and Strata 2.1 Selenium in Rocks 2.2 Selenium in Strata 2.3 Se-rich Rocks and Strata Section 3 Selenium Minerals and Selenium Deposits 3.1 Selenium Minerals 3.2 Selenium Deposits Section 4 Geological Process and Selenium Distribution 4.1 Magmatism and Selenium Distribution 4.2 Metamorphism and Selenium Distribution 4.3 Weathering and Selenium Distribution Section 5 Summary References Chapters Ⅱ Selenium in the Soil Environment Section 1 Selenium and Its Distribution in Soil 1.1 Selenium Sources in Soil 1.2 Selenium Roles in Soil 1.3 Selenium Speciation and Transformation in Soil 1.4 Spatial Distribution Characteristics of Selenium in Soil Section 2 Formation Mechanisms of Se-rich Soil 2.1 Impacts of Different Parent Materials 2.2 Impacts of Different Soil Formation 2.3 Impacts of Different Agricultural Land Utilization Practices 2.4 Impacts of Soil Microorganisms 2.5 Impacts of Other Mineral Elements Section 3 Summary References Chapters Ⅲ Selenium in the Water and Atmospheric Environments Section 1 Selenium in the Surface Water Environment Section 2 Selenium in the Groundwater Environment Section 3 Selenium in the Atmosphere Section 4 Summary References Chapters Ⅳ Selenium in Living Organisms Section 1 Selenium in Plants 1.1 Selenium Uptake, Transport, and Metabolism in Plants 1.2 Differences and Mechanisms of Selenium-accumulating Ability in Plants 1.3 Selenium Biofortification and Interaction with Heavy Metals in Plants 1.4 Insights from Se-rich Plantation Development Section 2 Selenium in Humans and Animals 2.1 Selenium Pool in Animals 2.2 Selenium Absorption and Their Metabolism in Animals 2.3 Selenium Absorption Organs and Their Distributions in Animals 2.4 Selenium Excretion and Bioavailability in Animals 2.5 Selenium Metabolism in Humans
Section 3 Selenium in Microorganisms 3.1 Microbial Populations Involved in Selenium Metabolism 3.2 Microbial Transformation and Utilization of Selenium 3.3 Research Trends in Selenium Microbial Transformation Section 4 Summary References Chapters Ⅴ Selenium Biogeochemical Cycling Section 1 Basic Processes of the Selenium Cycling 1.1 Selenium Distribution in Natural System 1.2 Geological Sources of Selenium in the Earth's Surface System 1.3 Main Pathways of Selenium Biogeochemical Cycling Section 2 Flux of the Selenium Cycling 2.1 Selenium Flux in the Atmospheric Pool 2.2 Selenium Flux in the Soil Pool 2.3 Selenium Flux in the Biological Pool 2.4 Selenium Flux in the Aquatic Pool Section 3 Speciation Transformation in the Selenium Cycling 3.1 Distribution of Selenium Speciation in Different Pools 3.2 Migration and Transformation of Selenium Speciation in the Earth's Surface Environment Section 4 Key Reactions in the Selenium Cycling 4.1 Weathering 4.2 Humification 4.3 Adsorption-desorption 4.4 Oxidation-reduction 4.5 Methylation Section 5 Main Factors Controlling and Influencing the Selenium Cycling 5.1 Geological Structure 5.2 Landscape 5.3 Climate 5.4 Soil 5.5 Organisms 5.6 Synergism and Antagonism Among Elements 5.7 Impacts of Human Activities Section 6 Summary References Chapters Ⅵ Geological and Geochemical Characteristics of Selenium in Typical Areas Section 1 Geological Background and Geochemical Characteristics of High-Se Areas 1.1 Selenium Toxicity 1.2 Geological Background of Typical High-Se Areas 1.3 Selenium in Soil in Typical High-Se Areas 1.4 Selenium in Plants and Foods in Typical High-Se Areas 1.5 Selenium in Humans in Typical High-Se Areas 1.6 Selenium Bioavailability in High-Se Areas Section 2 Geological Background and Geochemical Characteristics of Low-Se Areas 2.1 Diseases Caused by Se-deficiency 2.2 Geological Background of Typical Se-deficient Areas 2.3 Selenium in Soil in Typical Se-deficient Areas 2.4 Selenium in Plants and Foods in Typical Se-deficient Areas 2.5 Selenium in Humans in Typical Se-deficient Areas Section 3 Characteristics of Selenium Resources in Se-rich Areas
3.1 Hubei Province 3.2 Guangxi Zhuang Autonomous Region 3.3 Hainan Island 3.4 Jiangxi Province 3.5 Zhejiang Province 3.6 Shandong Tailai Basin Section 4 Summary References Chapters Ⅶ Utilization and Protection of Selenium Resources Section 1 Utilization and Protection of Selenium Mineral Resources 1.1 Extraction and Smelting of Selenium 1.2 Protection of Selenium Mineral Resources Section 2 Utilization of Se-rich Soil Resources 2.1 Evaluation of Se-rich Soil 2.2 Formation and Utilization of Se-rich Soil Resources Section 3 Utilization and Protection of Se-rich Biological Resources 3.1 Exploitation and Utilization of Se-accumulating Plants in Enshi 3.2 Protection Strategies of Se-accumulating Plant Resources Section 4 Research Methods of Selenium Geology and Geochemistry 4.1 Field Sampling 4.2 Indoor Determination Methods Section 5 Prospects of Selenium Geology and Geochemistry References