People always think that phosphorus is a vitamin, but phosphorus is not a vitamin, it is a mineral. Phosphorus is the second most common mineral in the human body. The first is calcium. Forfor is most commonly found in fats, proteins and sugars. Phosphorus is present in solid form in nature and enters the body of living things through plants and bacteria. Phosphorus is of great importance in the realization of basic vital activities in the body of living things. Phosphorus accounts for about one percent of the human body weight. Phosphorus is the basic building block of DNA molecules in cells. The greatest benefit is that it provides energy to living things. It is also very important in tooth and bone formation.

The main sources of phosphorus in wastewater are domestic and industrial wastes and fertilizer used in agricultural fields. In natural waters and wastewaters, phosphorus is generally present in various forms of phosphate. These phosphate forms can come from a variety of sources. For example, during drinking water treatment, small amounts of condensed phosphate are added to the water. Large amounts of condensed phosphates are added to the water used for cleaning purposes in laundries and cleaning companies. In addition, phosphate compounds are used in the treatment of boiler water. In agricultural areas, phosphate types are given as fertilizer. Organic phosphorus compounds are formed during biological processes and are mixed with domestic wastewater. Phosphorus is mixed with wastewater in all these ways.

Phosphorus is an essential element for the growth of microorganisms. However, it is a nutrient that limits productivity in the water environment. Due to this characteristic of phosphorus, which restricts growth, all wastewater, whether or not increased, enters the surface waters, some microorganisms in the aquatic ecosystem. Therefore, total phosphorus determination in wastewaters should be measured.

Accredited laboratories from national and international accreditation organizations carry out total phosphorus determination measurements within the framework of water and wastewater measurements. During these studies, laboratories comply with TS EN ISO / IEC 17025 standards.