This standard specifies a method for determining the presence of ammonium, nitrite, nitrate, and nitrogen in organic nitrogen compounds that can be converted to ammonium under the conditions of the method in a water sample. This method can be applied to the analysis of raw water and contaminated water.
JIS K 0400-45-10:2000 history
2000JIS K 0400-45-10:2000 Water quality -- Determination of nitrogen -- Catalytic digestion after reduction with Devarda's alloy