Nitrogen is one of the major nutrient elements limiting plant growth and development, and soil nitrogen is the main source of nitrogen nutrition for plants. Among them, soil arginine deaminase is also closely related to nitrogen transformation in soil.
This kit utilizes arginine deaminase to hydrolyze arginine, producing NH₃-N. In a strongly alkaline medium, this product reacts with hypochlorite and phenol to form the water-soluble dye indophenol blue. The activity of soil arginine deaminase is determined by measuring the maximum absorption peak of the colored product at 630 nm.