Nitrite is a naturally occurring inorganic form of nitrogen. It is relatively unstable as it is the intermediate species between ammonia and nitrate. Hence, it is usually found in very low concentrations in the environment, less than 0.1 mg/L, and its concentration does not normally exceed 1 mg/L in municipal wastewater.
WHY IS IT IMPORTANT?
Nitrite is the intermediate oxidation state of nitrogen in the oxidation of ammonia to nitrate, and in the reduction of nitrate. Therefore, although it is generally a short-lived compound it provides important information on the kinetics of nitrification and denitrification processes. Due to its high toxicity, a limit of 1 mg/L has been imposed on drinking water.
HOW WE MEASURE NITRITE
Real Tech’s Spectrum sensor uses the absorbance of UV light to measure the concentration of nitrite and nitrate simultaneously. Nitrite and nitrate both absorb in characteristic ways in the UV region, and changes in the spectrum shape indicate changes in both the ratio between the two species and the total concentration. What sets Real Tech’s sensor apart from the competition is the use of a deuterium lamp, which provides unparalleled resolution and stability in the UV region of the spectrum. With measurement capability spanning the entire UV-Visible spectrum, the sensor can also use other regions to compensate for interferences such as natural organic materials (NOM) and turbidity (solids).
ONLINE NITRITE ANALYZER
Real-time nitrite analyzer for water and wastewater.