A Study on the Retention Behavior of Co(II)-Dithiocarbamate Chelates in Reversed Phase-High Performance Liquid Chromatography

역상 액체크로마토그래피에서 Co(II)-Dithiocarbamate 킬레이트의 머무름 거동에 관한 연구

  • Received : 1999.04.26
  • Published : 1999.10.25

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(${\beta}$) calculated from the slope of $-{\Delta}H^0$ 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, $log\;k^{\prime}=log\;{k_w}^{\prime}-S_{\varphi}$ showed that S index was influenced mainly by the interaction between DTC chelates and the mobile phase.

Keywords

Retention behavior;Co(II)-dithiocarbamate chelate;RPLC

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Acknowledgement

Supported by : 경희대학교