In situ Spectroscopic Techniques at High Pressure provides a comprehensive treatment of in-situ applications of spectroscopic techniques at high pressure and their working principles, allowing the reader to develop a deep understanding of which measurements are accessible with each technique, what their limitations are, and for which application each technique is best suited. Coverage is also given to the instrumental requirements for these applications, with respect to the high pressure instrumentation and the spectroscopic components of the equipment. The pedagogical style of the book is supplemented by the inclusion of "study questions" which aim to make it useful for graduate-level courses. - Bridges the gap between supercritical fluid science/technology and in-situ spectroscopic techniques - Provides a powerful guide to applying spectroscopic techniques as gainful sensors at high pressure - Highlights the influence of a high pressure environment and high pressure equipment on spectroscopic techniques - Presents a deep understanding of which measurements are accessible with each technique, what their limitations are, and for which application each technique is best suited