Geochemistry: Concepts and Applications [Hardcover]

This book aims to explore basic principles, concepts and applications of geochemistry. Topics include chemical weathering, impacts on living beings and water, geochemical cycles, oxidation and redox reactions in geochemistry, isotopes, analytical techniques, medicinal, inorganic, marine, atmospheric, and environmental applications, as well as case studies. This book helps in understanding the chemical composition of the earth and its applications. It also includes beneficial effects, bottlenecks, solutions, and future directions in geochemistry.

Preface xiii

1 Toxic Geogenic Contaminants in Serpentinitic Geological Systems: Occurrence, Behavior, Exposure Pathways, and Human Health Risks 1
Willis Gwenzi

1.1 Introduction 2

1.2 Serpentinitic Geological Systems 4

1.2.1 Nature, Occurrence, and Geochemistry 4

1.2.2 Occurrence and Behavior of Toxic Contaminants 5

1.2.2.1 Chrysotile Asbestos 5

1.2.2.2 Toxic Metals 5

1.2.2.3 Rare Earth Elements 6

1.3 Human Exposure Pathways 7

1.3.1 Occupational Exposure 7

1.3.2 Non-Occupational Exposure Routes 7

1.3.2.1 Inhalation of Contaminated Particulates 7

1.3.2.2 Ingestion of Contaminated Geophagic Earths 8

1.3.2.3 Ingestion of Contaminated Drinking Water 8

1.3.2.4 Ingestion of Contaminated Medicinal Plants 8

1.3.2.5 Ingestion of Contaminated Wild Foods 9

1.4 Human Health Risks and Their Mitigation 10

1.4.1 Health Risks 10

1.4.1.1 Chrysotile Asbestos 10

1.4.1.2 Toxic Metals 11

1.4.1.3 Rare Earth Elements 11

1.4.2 Mitigating Human Exposure and Health Risks 12

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