| Abstract | 第4-5页 |
| 摘要 | 第6-9页 |
| Chapter 1 - Introduction | 第9-26页 |
| 1.1 Heavy metals pollution | 第9-14页 |
| 1.1.1 Harm effect of heavy metals in soil | 第9-12页 |
| 1.1.2 Heavy metal harm to plants | 第12-14页 |
| 1.2 Treatments methods for heavy metal contaminated soil | 第14-18页 |
| 1.2.1 Phytoremediation process | 第15-16页 |
| 1.2.2 Types of phytoremediation technologies | 第16-17页 |
| 1.2.3 Phytoremediation of cadmium in soil | 第17-18页 |
| 1.3 Activated leaching of heavy metals in soil remediation technology | 第18-20页 |
| 1.3.1 Selection of active agents in common use | 第18-20页 |
| 1.4 Commonly used activator types | 第20-22页 |
| 1.4.1 Chelating agents | 第20-21页 |
| 1.4.2 Risk encounter of technology for combined usage | 第21-22页 |
| 1.5 Research overview | 第22页 |
| 1.6 Significance and Objectives | 第22-24页 |
| 1.6.1 Research significance | 第22-23页 |
| 1.6.2 Research objectives | 第23-24页 |
| 1.6.3 Technical route | 第24页 |
| 1.7 Research layout | 第24-26页 |
| Chapter 2 - Effect of different activators in the mobilization of heavy metals in soil | 第26-34页 |
| 2.1 Introduction | 第26-27页 |
| 2.2 Material and methods | 第27-30页 |
| 2.2.1 Activators and test soil | 第27页 |
| 2.2.2 Activator screening experiment | 第27-28页 |
| 2.2.3 Heavy metal total amount and morphology distribution analysis | 第28-30页 |
| 2.3 Analysis and discussion | 第30-32页 |
| 2.3.1 Effect of heavy metal removal by activator during cadmium-contamination | 第30-31页 |
| 2.3.2 Cd speciation before and after extraction of activators | 第31-32页 |
| 2.4 The summary of this chapter | 第32-34页 |
| Chapter 3 – Pot experiment on activator combined with phytoremediation of Cd-contaminated soil | 第34-45页 |
| 3.1 Introduction | 第34-35页 |
| 3.2 Material and methods | 第35-36页 |
| 3.2.1 Pot experiment | 第35-36页 |
| 3.2.2 Determination of heavy metal concentrations in plant biomass | 第36页 |
| 3.3 Analysis and discussion | 第36-43页 |
| 3.3.1 Effect of activating substances in biomass of three plants | 第36-39页 |
| 3.3.2 Effect of absorbing cadmium into assorted parts of the three plants byactivating substances | 第39-40页 |
| 3.3.3 The process of absorbing heavy metal in soil by a compound activatingsubstance and plants | 第40-43页 |
| 3.4 The summary of this chapter | 第43-45页 |
| Chapter 4 – Field experiment on activator combined with phytoremediation of Cd-contaminated soil | 第45-54页 |
| 4.1 Introduction | 第45页 |
| 4.2 Materials and methods | 第45-48页 |
| 4.2.1 Contamination of Cd and three plants were chosen in this chapter | 第45-46页 |
| 4.2.2 Experiment of agricultural field | 第46-48页 |
| 4.3 Analysis and discussion | 第48-52页 |
| 4.3.1 Effect of biomass to soil from activating substances | 第48-49页 |
| 4.3.2 The influence of activator on plant enrichment and transfer of heavy metals | 第49-51页 |
| 4.3.3 Cadmium accumulation of agricultural fields combining activating substanceand three plants | 第51-52页 |
| 4.4 The summary of this chapter | 第52-54页 |
| Chapter 5 - Conclusion | 第54-57页 |
| 5.1 Conclusion | 第54-55页 |
| 5.2 Future scope of work | 第55-57页 |
| References | 第57-63页 |
| About the author | 第63-64页 |
| Acknowledgement | 第64-65页 |
