Diazotization Method for Nitrate and Nitrite

NITRATE inorganic is combined a prevalent nitrogen form of in inorganic ombined nitrogen in water and ordinarily is present in concentrations ranging from a few tenths of a part per million to several parts per million, except in polluted water where concentrations may be greater than 100 ppm. Nitrite is an intermediate product resulting from the oxidation of ammonia or the reduction of the nitrate. Bacterial decomposition of organic materials sometimes introduces the nitrite ion into water. Because nitrite is unstable, its concentration in natural waters rarely exceeds a few parts per million.