Typical nitrate tests reduce ...
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Typical nitrate tests reduce the nitrate to nitrite commonly using zinc. The nitrite is then reacted with a reagent that will produce color that is measured by a colormetric technique. There are interferences e.g. caused by excess oxidizing (e.g. chlorine residual) or reducing agents presence. They should tell you all of the details for their method. If not, use another method, there are many on the market.
1 Comment
Joe
There are two or more methods: cadmium reduction and hydrazine. Those I was able to but which one does the EviroLyzer uses. According to Applitek literature, this instrument can be adapted to a number of different tests. Even the literature itself could tell me.
Published by Peter Petersen, Water chemist II (water quality) at Milwaukee Water Works (Retired 2021)
2 Comments
Thanks. I will take a look at the other methods.
Published by Peter Petersen, Water chemist II (water quality) at Milwaukee Water Works (Retired 2021)
EPA lists 38 approved nitrate methods in its EPA 815-B-16-014 Methods document. Most are overlapping. I have no idea which Evirolyzer uses. If they won't help you get another one.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health