chapter 1 Essentiality and Toxicity of Metals / chapter 2 Analytical Methods for Heavy Metals in the Environment: Quantitative Determination, Speciation, and Microscopic Analysis / chapter 3 In Vitro Toxicological Assessment of Heavy Metals and Intracellular Mechanisms of Toxicity / chapter 4 Radionuclides in the Environment / chapter 5 Metal Carcinogenesis / chapter 6 Arsenic in the Environment: A Global Perspective / chapter 7 Environmental Aspects of Arsenic Toxicity / chapter 8 Cadmium / chapter 9 Chromium and Cancer / chapter 10 Aluminum / chapter 11 Nickel / chapter 12 Lead / chapter 13 Mercury / chapter 14 Molybdenum / chapter 15 Microbial Resistance Mechanisms for Heavy Metals and Metalloids / chapter 16 Genetic Susceptibility to Heavy Metals in the Environment / chapter 17 Selenium in Nutrition and Toxicology / chapter 18 Semiconductors / chapter 19 Bacterial Metal-Responsive Elements and Their Use in Biosensors for Monitoring of Heavy Metals