Chemical Oxygen Demand (COD) – Definition, Measurement, Importance
Chemical Oxygen Demand (COD) is a way to measure how much oxygen is needed to chemically oxidize organic and some inorganic substances in water that is acidic and has a strong oxidant, like potassium dichromate. It is usually shown in mg O₂ per liter. To find out how much oxidizable material is in a sample, … Read more