A comparison of differential pulse and d.c. amperometric detection modes for the liquid chromatographic determination of oxalic acid.
Oxalic acid determinations are made using two modes of electrochemical detection, namely, classical d.c. and differential pulse, after separation by ion-pair, ion exchange high performance liquid chromatography. Peak height ratio plots are constructed and compared for uric acid and oxalic acid mixtures using both electrochemical detection modes. The enhanced selectivity realized by use of the differential pulse electrochemical detection mode is demonstrated.
D002853:Chromatography, Liquid / Q000295:instrumentation*; D004553:Electric Conductivity; D010070:Oxalates / Q000032:analysis* / Q000652:urine; D011199:Potentiometry; D014527:Uric Acid / Q000032:analysis
D010070:Oxalates; D014527:Uric Acid