This article throws light upon the top five instrumental techniques used for monitoring industrial pollutants. The techniques are: 1. Atomic Absorption Spectroscopy 2. Nephelometry and Turbidimetry 3. Gas Chromatography 4. Polarography 5. Voltammetry and Chronopotentiometry. Instrumental Technique # 1. Atomic Absorption Spectroscopy: This technique was invented by Alan Walsh in 1950’s for the qualitative determination […]