SM 4500-NH3

Nitrogen (Ammonia)

Applicability: SM 4500-NH3 is a standard method for determining ammonia in various water and wastewater samples. It’s applicable to potable water, surface water, saline water, and domestic and industrial wastewaters. The method can be used with or without distillation, depending on the specific procedure and the presence of interferences. It’s important to consider potential interferences like turbidity, color, and high concentrations of calcium and magnesium in seawater.

Purpose: The purpose of Standard Method 4500-NH3 is to provide analytical methods for determining ammonia in water and wastewater samples. This method is used to quantify ammonia concentrations in various water sources, including drinking water, surface water, and industrial wastewater. Different variations of the method (e.g., by selective electrode, automated colorimetry, distillation) are used depending on the concentration range and specific sample characteristics.