Ammonia Nitrogen (NH₃-N), the amount of ammonia in the water site 2 and 3 were 0.13 mg / L, indicating that at site 1, 2 and 3, the degradation and excretion of waste in the form of ammonia of things. life in the water, because the water is a source of natural forests of Doi Suthep - Pui. Ammonia measurement called total ammonia, in which the total ammonia is composed of ammonia, 2 species of ions Nice ammonium (NH4 +), which is toxic to aquatic life and the ionic Nice ammonia (NH3), which. Toxic to aquatic The proportion of ammonia, both of them. The main factor is the value depends on the pH of the water (pH) and followed by the temperature (pH, high ammonia type. NH3 is greater proportion Which makes ammonia is more toxic).
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