| Abstract | 第13-17页 |
| 摘要 | 第18-25页 |
| Chapter 1 Introduction | 第25-35页 |
| 1.1 Background and significance | 第25-29页 |
| 1.2 Objectives of the study | 第29-30页 |
| 1.3 Contents of the study | 第30-31页 |
| 1.4 The organization of this dissertation | 第31-34页 |
| 1.5 The innovation of this thesis | 第34-35页 |
| Chapter 2 Literature review | 第35-47页 |
| 2.1 The introduction of DOM | 第35-37页 |
| 2.2 The important role of DOM in regulating environmental behavior of organic contaminants | 第37-41页 |
| 2.2.1 The generation and toxicity of organic contaminants | 第37-38页 |
| 2.2.2 The interaction between organic contaminants and DOM | 第38-41页 |
| 2.3 Techniques investigating organic contaminant-DOM interactions | 第41-45页 |
| 2.3.1 Introduction of commonly used techniques | 第41-43页 |
| 2.3.2 Advantages and shortages of fluorescence quenching | 第43-45页 |
| 2.4 Key issues need to be discussed in this study | 第45-47页 |
| Chapter 3 Quantifying the static and dynamic fluorescence quenching of phenanthrene and ofloxacin by dissolved humic acids | 第47-67页 |
| 3.1 Introduction | 第47-48页 |
| 3.2 Experimental Section | 第48-55页 |
| 3.2.1 Chemicals | 第48-49页 |
| 3.2.2 Preparation of dissolved humic acid | 第49-51页 |
| 3.2.3 DHA-OFL interactions investigated using dialysis equilibrium system and fluorescence quenching experiment | 第51-52页 |
| 3.2.4 Detection of PHE and OFL using HPLC and fluorescence spectrometer | 第52-53页 |
| 3.2.5 Data analysis | 第53-54页 |
| 3.2.6 Fluorescence quenching between PHE/OFL and model chemicals | 第54-55页 |
| 3.3 Results and Discussion | 第55-66页 |
| 3.3.1 Static quenching (or binding) of PHE or OFL by DHA | 第55-60页 |
| 3.3.2 Total and dynamic quenching of OFL or PHE by DHA | 第60-62页 |
| 3.3.4 Identifying static and dynamic quenching of OFL or PHE by the chemicalanalogues of DHA functional groups | 第62-66页 |
| 3.4 Summary | 第66-67页 |
| Chapter 4 Identifying structural contribution in dissolved humic acid to static and dynamicfluorescence quenching of phenanthrene, 9-phenanthrol, and naphthalene | 第67-89页 |
| 4.1 Introduction | 第67-68页 |
| 4.2 Methods and Materials | 第68-74页 |
| 4.2.1 Chemicals | 第68-69页 |
| 4.2.2 Preparation of DHA | 第69-71页 |
| 4.2.3 DHAs and PHE, PTR or NAP interactions | 第71页 |
| 4.2.4 The detection of PHE, PTR and NAP | 第71-72页 |
| 4.2.5 Data analysis | 第72-74页 |
| 4.3 Results and Discussion | 第74-87页 |
| 4.3.1 Characterization of HAs | 第74-76页 |
| 4.3.2 Binding of PHE, PTR, and NAP by DHA investigated by dialysisequilibrium system | 第76-78页 |
| 4.3.3 The importance of dynamic quenching in the overall fluorescence quenching | 第78-82页 |
| 4.3.4 Fluorescence quenching of PHE, PTR and NAP by model chemicals | 第82-87页 |
| 4.4 Summary | 第87-89页 |
| Chapter 5 Dual role of dissolved humic acid in the degradation of triclosan | 第89-115页 |
| 5.1 Introduction | 第89-92页 |
| 5.2 Materials and Methods | 第92-100页 |
| 5.2.1 Materials | 第92页 |
| 5.2.2 Degradation of TCS | 第92-94页 |
| 5.2.3 Analysis of TCS and degradation products | 第94-95页 |
| 5.2.4 Electron accepting capacity of DHA | 第95-96页 |
| 5.2.5 Sorption of TCS on DHA | 第96-99页 |
| 5.2.6 Bioavailability of DHA -bound TCS | 第99-100页 |
| 5.2.7 Statistical Analysis | 第100页 |
| 5.3 Results and Discussion | 第100-113页 |
| 5.3.1 Association of TCS with DHA | 第100-101页 |
| 5.3.2 The impact of DHAon microbial degradation of TCS | 第101-107页 |
| 5.3.3 Analysis of degradation byproducts | 第107-109页 |
| 5.3.4 DHA as electron shuttle | 第109-112页 |
| 5.3.5 The bioavailability of DHA-bound TCS | 第112-113页 |
| 5.4 Summary | 第113-115页 |
| Chapter 6 Conclusion and prospect | 第115-118页 |
| 6.1 Conclusion | 第115页 |
| 6.2 Prospective | 第115-118页 |
| Acknowledgements | 第118-121页 |
| References | 第121-134页 |
| Appendix A List of publications and prizes | 第134-137页 |
| Appendix B List of symbols and abbreviations | 第137-139页 |
| Appendix C 中文梗概 | 第139-158页 |
