- P-ISSN 1225-0163
- E-ISSN 2288-8985
역상 액체크로마토그래피에서 몇가지 Co(II)-dithiocarbamate(DTC)의 머무름 거동을 고찰하였다. 얻어진 머무름 자료들을 van't Hoff plot하여 킬레이트가 이동상으로부터 정지상으로 전이하는 엔탈피와 엔트로로피를 각각 계산하였다. 엔탈피값에 대한 In k'의 의존성을 조사한 결과 이동상중 유기 용매의 비가 증가할수록 감소하였다. 그리고 <TEX>$-{\Delta}H^0$</TEX>와 In k를 도시한 직선의 기울기로부터 구한 보정 온도(<TEX>${\beta}$</TEX>)는 765.3-888.5 K 범위이었다. 따라서 DTC 킬레이트들의 머무름 거동은 온도변화에 무관하게 일정하며, 주로 소용매성 효과에 영향을 받는다는 사실을 확인하였다. 아울러 머무름 실험식 <TEX>$log\;k^{\prime}
The retention behavior of Cot(II)-dithiocarbamate(DTC) chelates in reversed phase high performance liquid chromatography was investigated. Enthalpy and entropy of chelates transfer from the mobile phase to the stationary phase were calculated from retention data using van't Hoff plots. The dependence of In k' on enthalpy was decreased with increasing organic solvent ratio on the mobile phase. The compensation temperatures(<TEX>${\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}