Speciation is the identification and analysis of the chemical forms (or species) in which elements exist. It is critical to the understanding of the chemistry of environmental and biological systems. This book deals with the methods available to the analytical chemist for speciation, and with details of speciation in particular environments (waters, soils, sludges, plants, animals and man and with the radioactive elements in the environment). A final chapter summarizes the trends and developments in the field. The book provides an authoritative and up-to-date overview of the total problem of speciation and brings together the expertise and experience of scientists working on the various important different aspects of it. This book should be of interest to analytical chemists, environmental chemists, inorganic chemists, and biochemists at graduate level working in academia, environmental consultancies and government or government-funded agencies; geologists and biologists and some advanced chemistry undergraduates.