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A Study on the Retention Behavior of Co(II)-Dithiocarbamate Chelates in Reversed Phase-High Performance Liquid Chromatography
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.5, pp.387-396
Lee,
W., Kim,
E., Ann,
H., &
Lee,
J.
(1999). A Study on the Retention Behavior of Co(II)-Dithiocarbamate Chelates in Reversed Phase-High Performance Liquid Chromatography. Analytical Science and Technology, 12(5), 387-396.
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Abstract
The retention behavior of Cot(II)-dithiocarbamate(DTC) chelates in reversed phase high performance liquid chromatography was investigated. Enthalpy and entropy of chelates transfer from the mobile phase to the stationary phase were calculated from retention data using van't Hoff plots. The dependence of In k' on enthalpy was decreased with increasing organic solvent ratio on the mobile phase. The compensation temperatures(<TEX>${\beta}$</TEX>) calculated from the slope of <TEX>$-{\Delta}H^0$</TEX> vs In k' were in the range of 756.3-888.5 K. From these results. it was found that the retention mechanism of DTC chelates was invariant under the various temperatures and was largely affected by the solvophobie effect. Liniear relationship between S index and log k' in emprical retention equation, <TEX>$log\;k^{\prime}
- keywords
- Retention behavior, Co(II)-dithiocarbamate chelate, RPLC
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