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A mixture containing eleven lanthanide ions was separated and detected on an anion exchange co lumn by ion chromatography with indirect photometry detection (IPC).An aqueous solution of 1.5×10 -2 mol/L nitrilotri(methylenephosphonic) acid and 2.5×10 -3 mol/L tiron was used as the eluent in which the former served as complexing agent and eluent,the latter played as color reagent and eluent.The effects of acidity,concentration and composition of eluent on the retention behavior of the analytes and detection sensitivity are discussed.
A mixture containing eleven lanthanide ions was separated and detected on an anion exchange coumn by ion chromatography with indirect photometry detection (IPC). Aqueous solution of 1.5 × 10 -2 mol / L nitrilotri (methylenephosphonic) acid and 2.5 × 10 -3 mol / L tiron was used as the eluent in which the former served as complexing agent and eluent, the latter played as color reagent and eluent.The effects of acidity, concentration and composition of eluent on the retention behavior of the analyzes and detection sensitivity are discussed.