Indirect electrochemical detection of cations with cerium(III) in the mobile phase.
Cerium(III) has been used in the mobile phase for indirect electrochemical chromatography of cations. Lithium, sodium, ammonium, and potassium ions have been separated within 4 min and detected with both glassy carbon and Kel-F wax carbon paste electrodes. With a Kel-F wax/graphite electrode at 0.7 V, the detection limit for sodium, ammonium, and potassium ions are 1.5, 1.1, and 2.0 ppm, respectively.
Wangsa
J
J
Department of Chemistry, Miami University, Oxford, OH 45056, USA.
Targove
M A
MA
Danielson
N D
ND