Principles of Instrumental Analysis is a widely used textbook in analytical chemistry that provides a comprehensive introduction to the fundamental principles of instrumental analysis. The book covers a range of topics, including spectroscopy, chromatography, electrochemistry, and more. The 7th edition of the book is a updated and revised version that includes new chapters, examples, and problems.

: Chapters 6–12 (Absorption, emission, and mass spectrometry). Molecular Spectroscopy