An updated and unified approach to mass spectral interpretation, emphasizing the application of basic principles Electron ionization (EI) mass spectrometryan analytical tool used by chemists to identify and quantify compounds in a complex mixtureremains an essential technique for measuring low-molecular weight compounds such as drugs, flavor and odor components, pesticides, and petroleum products. The interpretation of EI mass spectra also remains an important skill because attempts to identify compounds using computer databases do not always yield useful results. Understanding Mass Spectra: A Basic Approach, Second Edition presents the introductory-level student with the fundamental concepts of mass spectrometry, providing a useful foundation for solving basic problems in a laboratory setting. Completely revised, the Second Edition includes: A detailed overview of theory and instrumentation Step-by-step descriptions of interpretative strategies Many fascinating real-world case studies and examples Additional skill-building problems with clearly explained answers Easy-to-follow explanations of all important mathematical derivations Convenient lists and tables of information needed to identify unknowns Additional suggested readings Containing problems and examples with a wide range of complexity, Understanding Mass Spectra emphasizes simple, practical treatments of topics such as fragmentation types and underlying mathematical relationships. Mastering these treatments allows for a solid grounding in basic principles and encourages advanced investigation. With this emphasis on comprehension, Understanding Mass Spectra, Second Edition provides a vital introduction to the field for upper-level undergraduates and beginning graduates, as well as a valuable resource for professional chemists working in analytical laboratories.