The smart Trick of chemical oxygen demand test That No One is Discussing
In the existence of sulfuric acid, silver sulphate, and mercury sulphate, potassium dichromate oxidises the natural matter contained in the h2o sample to create carbon dioxide (CO2) and water (H2O). The amount of potassium dichromate utilised is decided by comparing the volumes of ferrous ammonium sulphate eaten for the duration of blank and sample