High-Performance Liquid Chromatography (HPLC), Gas Chromatography (GC), and Ion-Exchange methods.
The field of analytical chemistry has shifted from "wet" chemical methods (like simple titrations) to sophisticated instrumental techniques. B.K. Sharma’s text is prized for several reasons:
UV-Visible, Infrared (IR), and Raman spectroscopy.
Complex physics and mathematical derivations behind instruments are explained in a way that is accessible to undergraduate and postgraduate students.
The book is famous for its clear, labeled diagrams of spectrometers, detectors, and columns, which are essential for understanding how the "black box" of an instrument actually works.