Development of Suppressed Ion Chromatography for the Online Quantification of Cations in Electrochemical Ammonia Synthesis Research.

ABSTRACT: Practical research on the electrochemical nitrogen reduction reaction (eNRR) requires quantitative ammonia trace analysis because production rates are on the order of µg h^-1 in aqueous electrolyte. This challenge is further aggravated by complex sample matrices. Ion chromatography is a powerful analytical technique for the quantitative determination of ammonium down to ppb-concentrations, but requires matrix elimination (ME) for these kinds of sample. We developed a suppressed cation chromatography method using automated matrix neutralization and ME to quantitatively determine ammonium in 0.2 M sulfuric acid electrolyte at µg L^-1 concentrations for use in NRR research. Although direct conductivity detection of cations is less sensitive than unsuppressed indirect condu

SUBMITTER: Bragulla S 

PROVIDER: S-EPMC12864167 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature