1. Introduction to environmental toxicology -- 2. A framework for environmental toxicology -- 3. An introduction to toxicity testing -- 4. Survey and review of typical toxicity test methods -- 5. Routes of exposure and modes of action -- 6. Factors modifying the activity of toxicants -- 7. Inorganic gaseous pollutants -- 8. Heavy metals -- 9. Biotransformation, detoxification, and biodegradation -- 10. Measurement and interpretation of the ecological effects of toxicants -- 11. Ecological risk assessment.