声明
Acknowledgements
Table of Contents
List of Tables
List of Figures
Summary
摘要
Abbreviations
Chapter 1 General Introduction
1.1 Background Information and Problem Description
1.2 Study site
1.3 Questionnaire survey
1.4 Objectives of the study
Chapter 2 Review of Literature
2.1 Drinking water quality safety
2.2 General introduction of nonpoint source pollution
2.3 Heavy metals from agricultural sources
2.4 Pestieides
2.5 Environmental endoerines
2.6 Other organic pollutants in farmland
Chapter 3 Water quality characterization of a typical reservoir using physiochemical parameters and water quality index
3.1 Introduction
3.2 Materials and methods
3.2.1 Study site
3.2.2 Calculation of water quality index
3.2.3 Statistical analysis
3.3 Results and discussions
3.3.1 Overview of water quality and physiochemical parameters
3.3.2 Water quality assessment using WQI
3.3.3 Water quality assessment using WQI and DO relatioship
3.3.4 Redundancy analysis(RDA)
3.4 Conclusions
Chapter 4 Risk assessment of heavy metals pollution in agricultural soils of the Siling reservoir watershed
4.1 Introduction
4.2 Materials and methods
4.2.1 Site description
4.2.2 Sample collection and preservation
4.2.3 Sample preparation and analysis
4.2.4 Statistical analysis
4.3 Results and discussion
4.3.1 Seasonal variations
4.3.2 Multivariate analysis for source identification of heavy metals
4.3.3 Risk assessment
4.4 Conclusions
Chapter 5 Concentrations and human health risk assessment of selected heavy metals in surface water of Siling reservoir watershed
5.1 Introduction
5.2 Materials and methods
5.2.1 Study Area
5.2.2 Sampling and analysis
5.2.3 Quality control
5.2.4 Data treatment and multivariate statistical analysis
5.2.5 Human health risk assessment indices
5.3 Results and discussion
5.3.1 Spatiotemporal variation
5.3.2 Multivariate analysis for source apportionment
5.3.3 Human health risk assessment
5.4 Conclusions
Chapter 6 Risk assessment of organochlorine pesticides(OCPs),polycyclic aromatic hydrocarbons(PAHs),and polychlorinated biphenyls(PCBs)in agricultural soils from the Siling reservoir watershed
6.1 Introduction
6.2 Material and methods
6.2.1 Sample preparation and analysis
6.2.2 Sample treatment and analysis
6.2.3 Risk assessment
6.2.4 Statistical analysis
6.3 Results and Discussions
6.3.1 Concentrations of OCPs in soils
6.3.2 Cancer risk for OCPs in soil samples
6.3.3 Concentrations of PAHs in soils
6.3.4 Cancer risk for PAHs in soil samples
6.3.5 Concentrations of PCBs in soils
6.3.6 Cancer risk of PCBs in soil samples
6.4 Conclusions
Chapter 7 A preliminary study on the occurrence and dissipation of estrogen in livestock wastewater
7.1 Introduction
7.2 Materials and methods
7.2.1 Wastewater sampling
7.2.2 Wastewater samples pretreatment
7.2.3 Wastewater pretreatment process
7.2.4 Chemical analysis
7.2.5 Bioassays analysis
7.2.6 Statistical anlalysis
7.3 Results and discussion
7.4 Conclusions
Chapter 8 Chemical and bioassay analysis of estrogen pollution in the surface water of the Tiaoxi River,the source river for Taihu Lake
8.1 Introduction
8.2 Material and methods
8.2.1 Water sampling
8.2.2 Water samples pre-treatment
8.2.3 Chemical analysis
8.2.4 Bioassays analysis
8.2.5 Yeast estrogen screen(YES)analysis
8.3 Results and discussion
8.4 Conclusions
Chapter 9 Conclusions and Future Prospects
9.1 Conclusions
9.2 Future Prospects
References
Curriculum Vitae