Not known Factual Statements About chemical oxygen demand test
During the presence of sulfuric acid, silver sulphate, and mercury sulphate, potassium dichromate oxidises the natural and organic matter contained in the h2o sample to make carbon dioxide (CO2) and drinking water (H2O). The quantity of potassium dichromate utilised is set by comparing the volumes of ferrous ammonium sulphate consumed in the course