The sediment of a lake-its muddy bottom layer-contains relatively high concentrations of nitrogen and phosphorus. These can be released to water, particularly under conditions of low oxygen concentrations. The nutrients in the sediment come from the past settling of algae and dead organic matter.
Potassium permanganate is an inorganic chemical compound with the chemical formula KMnO 4. It is a salt consisting of K+ and MnOâ 4 ions. Formerly known as permanganate of potash or Condy's crystals, it is a strong oxidizing agent.It dissolves in water to give intensely pink or purple solutions, the evaporation of which leaves prismatic purplish-black glistening crystals.In 2000, worldwide production was estimated at 30,000 tonnes.Using sodium hydroxide the end product is not sodium manganate but an Mn(V) compound which is one reason the potassium permanganate is more commonly used than sodium permanganate. Furthermore the potassium salt crystallizes better).
Potassium sorbate is used in a wide variety of products due to its role as a preservative and its ease of manufacturing. Potassium sorbate can be found in a variety of sources, mainly as a preservative in preprocessed foods because it helps to prevent mold, fungi and yeast growth that can cause foods to spoil.This chemical can easily be produced and is quite inexpensive, making it an ideal choice for many industrial applications as well. Potassium sorbate is found in many food products, especially those which are meant to be stored and eaten at room temperature. 2  This helps to ward off particles such as mold or fungus that can cause foods to spoil or make people sick.