EviroLyzer for nitrate determination

Hi

Does anyone have any information what process does EviroLyzer series II uses for it's nitrate determination. I have contacted Applitek in Belgium with little success. I am looking for any maintenance and troubleshooting tips. If anyone has an operation manual, is it possible to share. I am not able to find anything online.

Taxonomy

• Biological & Chemical Quality
• Chemical Analysis
• Water Quality Management
• Water Quality Training
• Analytical Services & Testing Labs
• Nitrogen

1 Answer

1. 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

   1. 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.

      2 Comment replies

      1. Thanks. I will take a look at the other methods.

      2. 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.