Ammonia nitrogen reagentApplication in water quality testing
Ammonia nitrogen reagents can be used to measure the ammonia nitrogen content of water on site, control the water quality in a certain state, and avoid affecting the growth of fish due to deterioration of water quality.
The main sources of ammonia nitrogen in water are the decomposition products of nitrogen-containing organic matter in domestic sewage by microbial action, certain industrial wastewater such as coking wastewater and synthetic ammonia fertilizer plant wastewater, farmland drainage, accumulation of excess feed and large amounts of excrement from fish and shrimp in aquaculture water, and excessive fertilization. In addition, in anaerobic environments, nitrite present in water can also be reduced to ammonia by microbial action. In aerobic environments, ammonia in water can also be converted into nitrite or further converted into nitrate.
Ammonia nitrogen in water mainly exists in two forms: free ammonia and ammonium salts. The main cause of harmful effects is free ammonia, which is dozens of times more toxic than ammonium salts and increases with increasing alkalinity. The toxicity of ammonia nitrogen is closely related to the pH value and water temperature of the pool water. Generally, the higher the temperature and pH value, the stronger the toxicity. The harm of ammonia nitrogen to fish and shrimp is similar to that of nitrite. Therefore, it is necessary to control the content of ammonia nitrogen in water, which can help evaluate the pollution and self purification status of water bodies.
