Measuring Nitrite and Nitrate in Rain and River Water Samples Using a Portable Ion Chromatograph in Step-gradient Mode and High Sensitivity Detection Flow Cell.

ABSTRACT: With the increasing environmental pollution issues, there is a growing need for sensitive and real-time monitoring of pollutants. Nitrite and nitrate are common nutrients that are related to water quality. This study aims to enhance nitrate and nitrite detection capabilities using a portable ion chromatography-based nutrient analyzer, Aquamonitrix. By optimizing it for ultra-low detection limits (LODs), we address challenges in environmental water quality assessment in Tasmania, Australia. Using step-gradient mode with a stereolithography three-dimensional printed flow cell with a 5 cm optical path length, a 300 µL injection loop, and 60 mM KOH as eluent, LODs of 0.004 µg/mL for nitrite and 0.023 µg/mL for nitrate were achieved. Further improving to 0.008 µg/mL for nitrate with a 10 cm opt

SUBMITTER: Mai Y 

PROVIDER: S-EPMC12012291 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature