Determination of Nitrate in Aqueous Media
Determining the amount of inorganic ions in aqueous media is important in the food industry and environmentally. In the environment high levels of ions like nitrate, nitrite, and phosphate can lead to unhealthy conditions for aquatic species. Similarly, high levels of nitrate and nitrite can cause health issues in humans. One method for determining nitrate levels in aqueous samples involves reducing the nitrate species to nitrite via a redox reaction with finely divided zinc powder followed by conversion to a diazonium salt and complexation with 1-naphthylamine to form a colored complex. A modified version of the Griess reaction was used to spectrophotometrically determine the amount of nitrate in several water and vegetable samples.
Arauz Tellez, Ebony V. and Rhoten, Melissa, "Determination of Nitrate in Aqueous Media" (2022). Fall Student Showcase 3 Minute Presentation Competition. 8.