Foreword |
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xiii | |
Chapter 1 Natural Attenuation of Trace Element Availability Assessed by Chemical Extraction |
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1 | (18) |
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1 | (1) |
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1.2 Chemical Extraction Techniques |
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2 | (4) |
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1.2.1 Single Extractants for Assessment of the Bioavailable Fraction |
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2 | (2) |
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1.2.2 Sequential Extraction Schemes |
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4 | (2) |
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1.3 Attenuation of Element Solubility and Availability in Contaminated Soils |
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6 | (8) |
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1.3.1 Assessing Attenuation by Single Extractants |
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7 | (2) |
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1.3.2 Assessing Attenuation by Sequential Extraction |
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9 | (5) |
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1.4 Other Experimental Parameters of Importance |
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14 | (1) |
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15 | (1) |
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16 | (3) |
Chapter 2 Techniques for Measuring Attenuation: Isotopic Dilution Methods |
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19 | (22) |
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Scott Young, Neil Crout, Julian Hutchinson, Andy Tye, Susan Tandy, and Lenah Nakhone |
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19 | (1) |
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19 | (8) |
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2.2.1 Suspending Electrolyte: Composition and Preequilibration Time |
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21 | (2) |
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2.2.2 Isotope Equilibration Time |
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23 | (1) |
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2.2.3 Use of Stable Isotopes |
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24 | (1) |
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2.2.4 Comparison of ID Methods and Soil Extractants |
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25 | (2) |
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27 | (10) |
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2.3.1 Source of Contaminant |
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27 | (3) |
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2.3.2 Effect of Soil pH on Lability |
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30 | (1) |
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2.3.3 Effect of Time on Lability |
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31 | (2) |
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2.3.4 Describing the Solubility of Metals |
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33 | (1) |
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2.3.5 Bioavailability: Comparison of E- and L- Values |
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34 | (3) |
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2.4 Conclusions and Future Directions |
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37 | (1) |
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37 | (4) |
Chapter 3 Biological Assessment of Natural Attenuation of Metals in Soil |
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41 | (16) |
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Enzo Lombi, Daryl P Stevens, Rebecca E. Hamon, and Mike J. McLaughlin |
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41 | (3) |
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3.2 Plants as Biological Indicators of Natural Attenuation of Metals in Soil |
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44 | (3) |
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3.3 Invertebrates as Biological Indicators of Natural Attenuation of Metals in Soil |
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47 | (2) |
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3.4 Microbial End Points as Biological Indicators of Natural Attenuation |
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49 | (2) |
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3.5 Limitations of Biological Approaches to Investigate Natural Attenuation |
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51 | (2) |
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3.6 Future Uses and Challenges |
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53 | (1) |
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54 | (3) |
Chapter 4 Long-Term Fate of Metal Contaminants in Soils and Sediments: Role of Intraparticle Diffusion in Hydrous Metal Oxides |
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57 | (16) |
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Paras Trivedi and Lisa Axe |
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4.1 Introduction to Sorption Kinetics |
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57 | (1) |
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58 | (1) |
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59 | (1) |
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4.4 Results and Discussion |
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60 | (2) |
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4.5 Intraparticle Diffusion and Site Activation Theory |
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62 | (2) |
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4.6 Spectroscopic Evidences of Intraparticle Diffusion |
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64 | (2) |
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66 | (2) |
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68 | (1) |
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69 | (4) |
Chapter 5 Structural Dynamics of Metal Partitioning to Mineral Surfaces |
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73 | (16) |
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73 | (1) |
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5.2 Ion Partitioning in Unsaturated and Saturated Soils |
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74 | (1) |
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5.3 Partitioning Processes |
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74 | (6) |
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5.3.1 Conceptual Model of Sorbent Dynamics |
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74 | (2) |
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5.3.2 Dilute Solid Solution |
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76 | (1) |
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5.3.3 Neoformation of Surface Precipitates |
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77 | (3) |
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79 | (1) |
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5.3.3.2 Interfacial Nucleation |
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79 | (1) |
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5.4 Relevant. Process Rates |
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80 | (1) |
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5.4.1 Redox Transformations Influencing Mineralogy |
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80 | (1) |
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5.5 Influence on Fate and Transport |
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81 | (1) |
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5.6 Data Gaps and Future Directions |
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82 | (3) |
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5.6.1 Adsorption as a Reaction Intermediate to Precipitation |
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83 | (1) |
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5.6.2 In Situ Rates of Mineral Transformation |
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84 | (1) |
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5.6.3 Incorporation at Crystal Structure Defects |
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85 | (1) |
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85 | (1) |
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86 | (3) |
Chapter 6 Effects of Humic Substances on Attenuation of Metals: Bioavailability and Mobility in Soil |
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89 | (24) |
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Christopher A. Impellitteri and Herbert E. Allen |
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89 | (1) |
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6.2 Humic Substances: Definitions and Structure |
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90 | (3) |
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6.3 Solid-Phase Organic Substances |
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93 | (1) |
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6.4 Leaching of Solid-Phase Soil Organic Matter |
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94 | (1) |
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6.5 Sorption of Dissolved Humic Substances |
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94 | (1) |
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6.6 Metal Attenuation by Solid-Phase Organic Matter |
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95 | (1) |
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6.7 Metal Sorption and Chelation by Soluble and Potentially Soluble Humic Substances |
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96 | (1) |
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97 | (1) |
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6.9 Effect of Humic Substances on the Solid Phase and Solution Phase Distribution of Metals |
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98 | (5) |
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6.10 Humic Substances, Metals, and Models |
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103 | (1) |
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6.11 Models Including Humic Substances |
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104 | (2) |
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106 | (1) |
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106 | (1) |
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106 | (7) |
Chapter 7 Attenuation of Metal Toxicity in Soils by Biological Processes |
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113 | (24) |
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113 | (1) |
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7.2 The Biological Response to Metal Stress |
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114 | (2) |
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7.2.1 Bioconcentration by Soil Biota |
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114 | (1) |
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7.2.2 Soil Organic Matter Accretion |
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114 | (1) |
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7.2.3 Generation of Metal-Chelating Compounds |
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115 | (1) |
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7.2.4 Metal Release in Volatile Form |
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115 | (1) |
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7.2.5 Metal Binding on Cell Walls and Biogenic Minerals |
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115 | (1) |
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7.3 Experimental Evidence for Biological Control of Metal Solubility |
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116 | (9) |
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7.3.1 Importance of DOM in Metal Solubility and Facilitated Transport |
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116 | (1) |
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7.3.2 Temperature-Induced Metal Release with Aging |
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117 | (2) |
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7.3.3 High Affinity of Most Metals for Organic Matter |
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119 | (2) |
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7.3.4 The Important Role of Sulfur in Strong Metal Bonding |
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121 | (1) |
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7.3.5 Behavior of Metals in Model Mineral-Organic Systems |
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121 | (2) |
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7.3.6 Rhizosphere Effects on Metal Solubility |
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123 | (1) |
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7.3.7 Biological Control of Bioavailability |
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123 | (1) |
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7.3.8 Sensitivity of Metal Solubility to Oxidation Status |
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124 | (1) |
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7.4 Implications of Biological Control: Explaining Metal Losses from Soils |
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125 | (5) |
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130 | (1) |
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131 | (6) |
Chapter 8 Redox Processes and Attenuation of Metal Availability in Soils |
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137 | (20) |
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137 | (1) |
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8.2 Redox Conditions in Soils |
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138 | (3) |
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8.3 Redox-Active Trace Elements in Soils |
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141 | (3) |
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141 | (1) |
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142 | (1) |
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143 | (1) |
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8.4 Indirect Effects on Trace Element Availability |
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144 | (6) |
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8.4.1 Effects of pH Change |
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144 | (1) |
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8.4.2 Precipitation of Carbonates and Sulfides |
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145 | (1) |
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8.4.3 Reductive Dissolution of Mn and Fe Oxides |
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146 | (2) |
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8.4.4 Altered Soil-Solution Composition |
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148 | (1) |
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149 | (1) |
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8.5 Attenuation of Metal Availability by Redox Reactions |
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150 | (1) |
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151 | (6) |
Chapter 9 Fixation of Cadmium and Zinc in Soils: Implications for Risk Assessment |
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157 | (16) |
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Erik Smolders and Fien Degryse |
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157 | (8) |
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9.1.1 Risks of Cadmium in Soil |
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158 | (1) |
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9.1.2 Fixation of Cadmium in Soils |
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159 | (3) |
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9.1.3 Biological Evidence for Cadmium Fixation |
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162 | (2) |
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9.1.4 Implications for Risk Assessment |
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164 | (1) |
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165 | (4) |
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9.2.1 Risks of Zinc in Soil |
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165 | (1) |
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9.2.2 Fixation of Zinc in Soils |
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165 | (2) |
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9.2.3 Biological Evidence for Zinc Fixation |
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167 | (2) |
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9.2.4 Implications for Risk Assessment |
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169 | (1) |
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169 | (4) |
Chapter 10 Natural Attenuation: Implications for Trace Metal/Metalloid Nutrition |
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173 | (24) |
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Rebecca Hamon, Samuel Stacey, Enzo Lombi, and Mike McLaughlin |
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173 | (1) |
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10.2 Essential Micronutrients |
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173 | (1) |
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10.3 Importance of Understanding Micronutrient Attenuation |
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174 | (1) |
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10.4 Studies of Micronutrient Attenuation |
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175 | (8) |
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175 | (1) |
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176 | (5) |
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10.4.3 Cobalt, Molybdenum, and Selenium |
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181 | (2) |
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10.5 Environmental Consequences |
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183 | (1) |
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10.6 Strategies to Access Fixed Forms of Micronutrients |
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183 | (2) |
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10.7 Strategies to Minimize Fixation of Trace Elements Applied as Fertilizers |
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185 | (5) |
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10.7.1 Foliar Application |
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185 | (1) |
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186 | (1) |
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10.7.3 Acidifying Fertilizers |
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186 | (1) |
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10.7.4 Synthetic Chelates |
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187 | (2) |
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10.7.5 Natural Chelating Agents |
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189 | (1) |
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190 | (7) |
Chapter 11 Use of Soil Amendments to Attenuate Trace Element Exposure: Sustainability, Side Effects, and Failures |
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197 | (32) |
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Michel Mench, Jaco Vangronsveld, Nick Lepp, Ann Ruttens, Petra Bleeker, and Wouter Geebelen |
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197 | (1) |
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11.2 Types of Soil Amendments |
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198 | (2) |
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11.3 Endpoints for Testing Efficacy of Attenuation |
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200 | (1) |
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11.4 Background to Experimental Sites |
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200 | (3) |
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11.5 Chemical Tests and Speciation |
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203 | (2) |
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205 | (2) |
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11.7 Effects of Different Amendments on Plant Growth and Contaminant Uptake |
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207 | (7) |
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11.7.1 Biosolids Combined with Liming |
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207 | (2) |
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11.7.1.1 Pronto Mine Experiment, Canada |
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208 | (1) |
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11.7.1.2 Leadville Experiment, Colorado |
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208 | (1) |
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11.7.1.3 Bunker Hill Experiment, Idaho |
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208 | (1) |
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11.7.1.4 Palmerton Experiment, Pennsylvania |
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208 | (1) |
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11.7.2 Cyclonic Ashes (Beringite): Lommel-Maatheide and Overpelt Experiments, Belgium |
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209 | (1) |
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209 | (1) |
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11.7.4 Zerovalent Fe-Related Compounds Combined with Cyclonic Ashes |
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210 | (2) |
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11.7.4.1 Louis Fargue Experiment, Domaine INRA de Couhins, France |
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210 | (1) |
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11.7.4.2 Jales Experiments |
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210 | (1) |
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11.7.4.3 Small-Scale Reppel Experiment |
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211 | (1) |
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212 | (1) |
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213 | (1) |
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11.7.7 Phosphate Compounds |
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213 | (1) |
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213 | (1) |
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11.7.9 Competitive Uptake at the Root Surface and Competitive Transfer into Plant Parts |
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214 | (1) |
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11.8 Impacts on and Uptake by Other Organisms |
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214 | (2) |
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11.8.1 Soil Microorganisms |
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214 | (1) |
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11.8.2 Earthworms and Mites |
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215 | (1) |
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215 | (1) |
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11.9 Biodiversity and Genetic Adaptation of Organisms |
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216 | (1) |
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11.10 Failures, Side Effects, and Limitations of Chemical Immobilization Methods for Soil Remediation |
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217 | (4) |
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217 | (2) |
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219 | (1) |
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220 | (1) |
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221 | (2) |
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223 | (6) |
Index |
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229 | |