Spectrophotometer Principles Types and Applications

A spectrophotometer is an analytical instrument used to measure the intensity of light absorbed or transmitted by a sample at specific wavelengths. It operates based on Beer-Lambert’s Law, which relates absorbance to concentration. Key components include a light source, monochromator, sample holder, detector, and data output system. Types of spectrophotometer encompass UV-Vis, infrared (IR), fluorescence, and atomic absorption spectrophotometers, each tailored for distinct applications. These instruments are vital in fields like pharmaceuticals, environmental monitoring, and material analysis, aiding in determining substance concentration, chemical composition, and quality control.