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Eby, G.N. Principles of Environmental Geochemistry. Kentucky, USA (Thomson, Brooks/Cole). 2004, 514 pp. Price £29.99 (Hardback). ISBN 0-12-229061-5

This is a well produced hardback book. Chapter titles are: Basic principles, Equilibrium thermodynamics and kinetics, Acid-base equilibria, Oxidation-reduction reactions, Carbon chemistry, Isotopes, Environmental mineralogy, The atmospheric environment, The continental environment, The marine environment. Appendices are: Electronic structure and valences of the elements, Standard state (298.1 K, 105 Pa) thermodynamic data (for the elements, ions and solid phases), Ionic radii for different ions and, a Piper diagram outline. Finally there are answers to selected numerical questions posed in the text and a comprehensive index. Lest the purchaser feel short-changed by the above, the inside front cover contains a periodic table and the inside back cover a potpourri of SI units, constants and conversion factors. Individual chapters are clearly written and contain a fair number of black and white diagrams as well as data tables, worked example calculations, case studies illustrating the concepts about which the chapter is concerned and a large number of questions and problems. Refreshingly for an American book the case studies are selected from across the world. Numerical answers for some of the end of chapter problem questions are given at the end of book; a ‘Solutions manual’ containing all solutions and spreadsheets is apparently …