Chapter 1. Introduction. Chapter 2. Anions in Natural Water. Chapter 3. Anions in Sea Water. Chapter 4. Anions in Estuary and Coastal Waters. Chapter 5. Anions in Aqueous Precipitation. Chapter 6. Anions in Surface, Ground, Mineral, Borehole and Pore Waters. Chapter 7. Anions in Potable Waters. Chapter 8. Anions in Wastewaters. Chapter 9. Anions in Sewage Effluents. Chapter 10. Anions in Trade Effluents. Chapter 11. Anions in High Purity, Boiler-feed and Nuclear Reactor Cooling Waters. Chapter 12. Multi-Anion Analysis, Applications of Ion Chromatography. Chapter 13. Multi-Anion Analysis, Applications of High Performance and Related Liquid Chromatographic Techniques. Chapter 14. Multi-Anion Analysis, Miscellaneous Methods. Chapter 15. Preconcentration Techniques. Chapter 16. On-site Measurement of Anions. Chapter 17. On-line Measurement of Anions. Chapter 18. Sample Preservation Prior to Analysis. Chapter 19. Analytical Quality Control.