Ion-chromatography of metals with post-column ion displacement.
A post-column reagent mixture of Eriochrome Black T and magnesium-EDTA complex is added to the eluent from an ion-chromatograph. Eluted metal cations displace the magnesium, which then forms a complex with the Eriochrome Black T. The absorbance of this complex is measured at 520 nm. Detection limits for several cations are in the mug/ml range.
Bowles
C J
CJ
Department of Chemistry, University of Saskatchewan, Saskatoon, Sask. Canada S7N 0W0.
Bader
L W
LW
Jackson
K W
KW