What does TAN stand for in water quality management?

In water quality management, TAN stands for Total Ammonia Nitrogen. It refers to the total concentration of ammonia in water, which exists in two forms: ionized (ammonium, NH4+) and unionized (ammonia, NH3). Measuring TAN is crucial in aquaculture and aquatic systems because ammonia is toxic to fish and other aquatic organisms, especially in its unionized form. Understanding and managing TAN levels helps ensure a healthy environment for aquatic life, as high levels can lead to stress, reduced growth rates, and even mortality in fish and invertebrates. Regular monitoring of TAN is a key component in maintaining water quality standards and fostering a sustainable aquatic ecosystem.