Ammonia nitrogen is present in different concentrations in surface water and groundwater. Ammonia occurs as a result of microbiological activity in water and is considered as a chemical sign of water pollution. When it is determined that ammonia is present in the water, the amount of ammonia is determined in order to determine the purpose of use of water and to remove ammonia. Photometric system is used in quantitative ammonia determination method. Potassium and sodium tartrate solution and nessler reagent are added to the water sample to measure the required wavelength in the spectrophotometer and the concentration is determined.

Nitrogen and nitrogenous substances are very important for environmental pollution. Nitrogenous substances are always the first elements to be sought for pollution of air and water and in the management of solid wastes. Nitrogen is a substance that has a natural cycle and is able to form different compounds in different oxidation stages, either consumed by bacteria or chemically. It is an essential nutrient for all living cells to reproduce and survive.

Nitrogen, together with amino acids, is an element that enters the structure of certain organic substances such as nitro, amine and amide compounds, especially proteins derived from them.

The determination of organic and inorganic nitrogen compounds in drinking and drinking water, surface water or contaminated water bodies is important in many ways. Above all, the presence of ammonia in drinking water is the main indicator of sewerage mixing.

In the nitrogen cycle, ammonia nitrogen begins to decrease over time, but nitrite and nitrate begin to increase.

Within the scope of chemical tests in laboratories ammonium nitrogen (Ammonia) amount determination studies are also made. In these studies, the standards prepared by local and foreign organizations are complied with. Here are a few of these standards:

• TS 5874 Water analysis methods - Ammonium determination - Potentiometric method
• TS 5868 Water analysis methods - Ammonium determination - Titrimetric method after distillation
• Methods of water analysis - Determination of ammonium - 7159. Part: Manual spectrophotometric method