Research on various aspects of the PCB problem has grown and continues to grow with remarkable intensity. Opinions on the importance of these ubiquitously distributed industrial compounds, however, still vary greatly. The authors do not wish to enter this discussion. The main aim of this book is to present a comprehensive summary of the chemistry of chlorobiphenyls. Included are the nomenclature, compositionof technical mixtures, syntheses of individual chlorobiphenyls, chemical reactions, photochemical and metabolic alterations, and spectroscopic properties. Different methods of PCB analysis are presented and evaluated in a separate chapter. Toxicological and general biological effects are frequently referred to but are not a proper topic for this book.Contents1. Introduction2. Commercial PCB preparations: properties and compositions3. Synthesis of chlorobiphenyls4. Other Biphenyl Syntheses5. Chemical reactions of chlorobiphenyls6. Photodegradation of chlorobiphenyls7. Metabolism of chlorobiphenyls8. Mass spectroscopy of chlorobiphenyls9. Nuclear magnetic resonance of chlorobiphenyls10. Ultraviolet spectroscopy of chlorobiphenyls11. Infrared spectrometry of chlorobiphenyls12 Determination of chlorobiphenyls13. Recent developments.