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xi | |
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xiii | |
Acknowledgments |
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xv | |
About the Editors |
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xvii | |
Workshop Participants |
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xix | |
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Chapter 1 Workshop on Deriving, Implementing, and Interpreting Soil Quality Standards for Trace Elements |
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1 | (6) |
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1.1 Introduction to the Workshop |
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1 | (2) |
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1.2 Deriving, Implementing, and Interpreting SQS for TEs |
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3 | (2) |
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1.3 Aims and Objectives of the Meeting |
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5 | (1) |
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5 | (2) |
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Chapter 2 Derivation of Ecologically Based Soil Standards for Trace Elements |
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7 | (74) |
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7 | (1) |
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2.2 Soil Factors Affecting Effective Dose |
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7 | (6) |
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2.2.1 Background Concentrations |
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7 | (5) |
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2.2.2 How Soils Affect the Availability and Toxicity of Added TEs |
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12 | (1) |
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2.3 Conceptual Model of the Soil-Organism System |
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13 | (2) |
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2.4 Implications for Setting Soil Quality Standards |
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15 | (1) |
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2.5 Models of TE Uptake and Toxicity to Soil Organisms |
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16 | (1) |
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17 | (6) |
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2.6.1 The Free Ion Activity Model and Biotic Ligand Model |
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17 | (5) |
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2.6.2 Models Using Adsorption Isotherms |
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22 | (1) |
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2.6.3 The Free Ion Approach |
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22 | (1) |
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2.7 Empirical Toxicity Models |
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23 | (3) |
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2.8 Direct Measurement of TE Pools |
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26 | (4) |
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2.9 Consideration of Modifying Soil Factors in Soil Quality Standards |
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30 | (4) |
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2.9.1 Differences between Laboratory and Field Conditions in Ecotoxicity Studies |
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33 | (1) |
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2.10 Effects of Spiking Soils with Soluble TE Salts on Soil Solution Chemistry and Toxicity Measurements |
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34 | (2) |
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2.11 Minimizing Spiking-Induced Artifacts in the Laboratory |
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36 | (1) |
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2.12 Correction Factors for Existing Toxicity Data |
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37 | (1) |
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2.13 Recommended "Best Practice" TE Dosing in Laboratory Ecotoxicity Experiments |
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38 | (1) |
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2.14 Biotic Factors Affecting Organism Response to TE Dose |
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39 | (24) |
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2.14.1 Quantity and Quality of the Ecotoxicological Data |
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40 | (3) |
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2.14.2 Minimum Number of Ecotoxicity Data Points |
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43 | (1) |
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2.14.3 Taxonomic Diversity Needed |
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43 | (1) |
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2.14.4 Selection of Species |
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44 | (2) |
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2.14.4.1 Use of Microbial Ecotoxicological Data for Development of SQS |
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46 | (4) |
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2.14.5 Appropriateness of Toxicity Endpoints |
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50 | (1) |
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2.14.6 Type of Ecotoxicity Data |
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51 | (1) |
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2.14.7 Use of Acute and Chronic Data |
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52 | (1) |
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2.14.8 Dealing with Multiple Toxicity Data for Species |
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53 | (1) |
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2.14.9 Choice of Distribution for SSD |
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54 | (1) |
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2.14.10 Level of Protection to be Provided |
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55 | (1) |
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2.14.11 Acclimation and Adaptation |
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56 | (1) |
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2.14.12 Mixture Considerations |
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56 | (5) |
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2.14.13 Secondary Poisoning |
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61 | (2) |
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63 | (3) |
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63 | (2) |
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65 | (1) |
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66 | (15) |
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Chapter 3 Variation in Soil Quality Criteria for Trace Elements to Protect Human Health: Exposure and Effects Estimation |
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81 | (42) |
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81 | (1) |
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3.2 Exposure Characterization |
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82 | (3) |
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3.2.1 Background Exposure |
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82 | (1) |
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3.2.2 Comparison among Jurisdictions |
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82 | (1) |
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3.2.3 Proportion of Total Exposure Allocated to Background |
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83 | (2) |
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85 | (4) |
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3.3.1 Particle Size Domain |
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86 | (1) |
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3.3.2 Particle Deposition |
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86 | (2) |
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88 | (1) |
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89 | (5) |
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3.4.1 Recommended Soil Ingestion Values for Children Based on Tracer Studies |
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91 | (2) |
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3.4.2 Recommended Soil Ingestion Values for Adults Based on Tracer Studies |
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93 | (1) |
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94 | (4) |
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3.5.1 Land Use Scenarios: The Issue of Selecting Appropriate Background Exposure |
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95 | (1) |
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3.5.2 Dietary Preferences |
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95 | (1) |
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3.5.3 Soil-Plant Transfer |
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96 | (2) |
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3.5.4 Soil-Crop-Animal and Soil-Animal Transfer |
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98 | (1) |
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3.6 Statistical Characterization of Exposure |
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98 | (3) |
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3.6.1 Probabilistic versus Deterministic Assessments |
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99 | (1) |
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3.6.2 Uncertainty Factors |
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100 | (1) |
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101 | (4) |
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3.7.1 Homeostasis and the Setting of SQSs |
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102 | (1) |
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3.7.2 Dose-Response Relationships for Essential Elements |
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103 | (1) |
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3.7.3 Interaction of Essential and Nonessential TEs |
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104 | (1) |
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3.8 Bioavailability and Bioaccessibility |
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105 | (5) |
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3.8.1 Use of In Vitro Gastrointestinal Methods to Estimate TE Bioavailability |
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108 | (2) |
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3.9 Effects of Characterization |
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110 | (4) |
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3.9.1 Benchmark Dose versus NOAEL/LOAEL |
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110 | (1) |
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3.9.2 Bridging Ambient Exposure to Literature Doses |
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111 | (2) |
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3.9.3 Sensitive Subpopulations |
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113 | (1) |
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3.9.3.1 Children Subpopulations |
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113 | (1) |
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3.9.3.2 Adult Subpopulations |
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114 | (1) |
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3.10 Summary and Conclusions |
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114 | (2) |
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116 | (7) |
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Chapter 4 Implementation and Use of Terrestrial Standards for Trace Elements |
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123 | (18) |
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123 | (1) |
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4.2 The Use of Soil Quality Standards |
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124 | (2) |
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4.3 Frameworks for the Implementation and Use of SQSs for TEs |
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126 | (1) |
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4.4 Accounting for Ambient Background Concentrations in the Implementation of TE SQSs |
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127 | (3) |
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4.5 Accounting for (Bio)availability in the Derivation of TE SQSs |
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130 | (3) |
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4.6 Accounting for Mixtures of TEs in Regulatory Frameworks |
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133 | (1) |
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4.7 Monitoring and Assessment |
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134 | (1) |
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134 | (1) |
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135 | (1) |
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136 | (1) |
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136 | (5) |
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Chapter 5 Recommendations for the Derivation of Interpretable and Implementable Soil Quality Standards for Trace Elements |
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141 | (3) |
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141 | (1) |
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5.2 Soil Quality Standards for TEs and Best Practice |
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142 | (2) |
References |
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144 | (1) |
Abbreviations |
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145 | (6) |
Index |
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151 | |