Chemodynamics

What happens to a chemical once it enters the natural environment?How do its physical and chemical properties influence itstransport, persistence, and partitioning in the biosphere? How donatural forces influence its distribution? How are the answers tothese questions useful in making toxicological and epidemiologicalforecasts? Environmental Chemodynamics, Second Edition introduces readers tothe concepts, tools, and techniques currently used to answer theseand other critical questions about the fate and transport ofchemicals in the natural environment. Like its critically acclaimedpredecessor, its main focus is on the mechanisms and rates ofmovement of chemicals across the air/soil, soil/water, andwater/air interfaces, and on how natural processes work to mobilizechemicals near and across interfaces--information vital toperforming human and ecological risk assessments. Also consistent with the first edition, EnvironmentalChemodynamics, Second Edition is organized to accommodate readersof every level of experience. The first section is devoted totheoretical underpinnings and includes discussions of mass balance,thermodynamics, transport science concepts, and more. The secondsection concentrates on practical aspects, including the movementbetween bed-sediment and water, movement between soil and air, andintraphase chemical behavior. This revised and updated edition of Louis J. Thibodeaux's 1979classic features new or expanded coverage of: * Equilibrium models for environmental compartments * Dry deposition of particles and vapors onto water and soilsurfaces * Chemical profiles in rivers and estuaries, particles and porousmedia * Fate and transport in the atmospheric boundary layer and withinsubterranean media * Chemical exchange between water column and bed-sediment * Intraphase chemical transport and fate This Second Edition of Environmental Chemodynamics also includestwice as many references and 50% more exercises and practiceproblems.

Reviews existing knowledge in the natural and engineering sciences to determine the rates, lifetimes, routes, and reservoirs of chemicals moving through the environment and to estimate the level of exposure to susceptible living and nonliving targets. Uses simple models and ideas as guides in constructing integrated environmental and ecosystem models for simulating chemical movement and fate. Coverage includes phase equilibrium and transport processes; the interphase and intraphase transport process; movement of inorganic and organic chemicals across the air-water interface; desorption of chemicals from the mud-water interface; volatilization of pesticides from air-soil surfaces; and vertical distribution of dissolved, reactive chemicals in stratified waterbodies. Includes numerous problems from current literature and appendices with chemical, physical, transport, and environmental data.

Partitioning of chemicals in the environment and its modeling is becoming an important field in environmental science and engineering. This book enables students, researchers, and interested laymen to enter the field of environmental modeling in a fast and effective way. The book contains modeling software (CemoS V 1.10), data sets and the CemoS handbook. Each chapter contains examples and exercises.

Reviews existing knowledge in the natural and engineering sciences to determine the rates, lifetimes, routes, and reservoirs of chemicals moving through the environment and to estimate the level of exposure to susceptible living and nonliving targets. Uses simple models and ideas as guides in constructing integrated environmental and ecosystem models for simulating chemical movement and fate. Coverage includes phase equilibrium and transport processes; the interphase and intraphase transport process; movement of inorganic and organic chemicals across the air-water interface; desorption of chemicals from the mud-water interface; volatilization of pesticides from air-soil surfaces; and vertical distribution of dissolved, reactive chemicals in stratified waterbodies. Includes numerous problems from current literature and appendices with chemical, physical, transport, and environmental data.

Provides scientific & technical information that scientists can use along with other materials to develop ecological risk assessment guidance. Highlights important principles & approaches relevant to the ecological risk assessment framework that scientists should consider in preparing guidelines. Covers: biological stressors, ecological recovery, exposures characteristics, & much more. Figures & tables.

This book addresses the mechanism of enrichment of heavy elements in galaxies, a long standing problem in astronomy. It mainly focuses on explaining the origin of heavy elements by performing state-of-the-art, high-resolution hydrodynamic simulations of dwarf galaxies. In this book, the author successfully develops a model of galactic chemodynamical evolution by means of which the neutron star mergers can be used to explain the observed abundance pattern of the heavy elements synthesized by the rapid neutron capture process, such as europium, gold, and uranium in the Local Group dwarf galaxies. The book argues that heavy elements are significant indicators of the evolutionary history of the early galaxies, and presents theoretical findings that open new avenues to understanding the formation and evolution of galaxies based on the abundance of heavy elements in metal-poor stars.

This book updates a successful and widely-used text that is “the most authoritative source in the field of environmental chemodynamics.” Its main focus is on the mechanisms and rates of movement of chemicals across the air/soil, soil/water, and water/air interfaces, and on how natural processes work to mobilize chemicals near and across interfaces—information vital to performing human and ecological risk assessments. The book opens with a logical introduction of the subject and goes on to describe the applications. Included are many examples and problems that illustrate the topics. This new edition will now include more examples, exercises, and case histories. In addition, chapters on the important mechanisms of soil/plant systems and aquatic organisms have been added, as well as coverage of industrial emissions and inorganic chemicals.

This unique book bridges the gap between toxicology and chemistry at a level understandable by a wide spectrum of readers with various interests and a broad range of backgrounds in chemistry, biochemistry, and toxicology. The third edition has been thoroughly updated and expanded to reflect recent advances in important areas of research, including toxicogenetics and toxic effects on various body systems. Toxicological Chemistry and Biochemistry, Third Edition begins by outlining the basic concepts of general chemistry, organic chemistry, and biochemistry needed to understand the topics in the book. The author then presents an overview of environmental chemistry so that you can understand the remainder of the material covered within that framework. He also discusses biodegradation, bioaccumulation, and biochemical processes that occur in water and soil. The new chapter on toxic effects considers toxicities to the endocrine and reproductive systems, and the section on xenobiotics analysis deals with the determination of toxicants and their metabolites in blood and other biological materials. The chapter on the genetic aspects of toxicology discusses the ways in which chemical damage to DNA can cause mutations, cancer, and other toxic effects on specific body systems, and it considers the role of genetics in determining individual susceptibilities to various toxicants. Toxicological Chemistry and Biochemistry, Third Edition retains the basic information and structure that made the first two editions popular with students and industry professionals, while enhancing the usefulness of the book and modernizing it in important areas. Review questions and supplementary references at the end of each chapter round out the third edition of this bestselling work.