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A Study on the Development of Analytical Methods and Behaviors of Environmental Pollutants(II) : Optimization for Separation of Alkylphenols by Reversed-Phase Liquid Chromatography
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1994, v.7 no.1, pp.25-31
Lee,
D. W., Lee,
Y., Park,
Y. H., &
Kim,
H.
S.
(1994). A Study on the Development of Analytical Methods and Behaviors of Environmental Pollutants(II) : Optimization for Separation of Alkylphenols by Reversed-Phase Liquid Chromatography. Analytical Science and Technology, 7(1), 25-31.
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Abstract
As for analytes which did not represent the differences of the selectivity on the stationary and mobile phase, secondary chemical equilibrium theory was applied to study pH effects on the separation of alkylphenols. Mobile phase was consisted of an aqueous sodium carbonate-bicarbonate buffer and acetonitrile. The maximum selectivity for adjacent peak pairs was predicted from those values of <TEX>$k^{\prime}_{HA}/k^{\prime}_{A-}$</TEX> and <TEX>${\Delta}pK$</TEX>. The optimum pH determined by this method was 11.18 pH and solvent selectivity were considered at the same time to invoke the full range of selectivity effects possible for separations. Quaternary mixture composed of methanol, acetonitrile, tetrahydrofuran and water was adjusted to optimum pH 11.18. As the statistical simplex technique of an overlapping resolution map (ORM) was used to predict the optimized solvent system. The optimum solvent, which gives complete separation of alkylphenols, was determined as follws MeOH : ACN : THF
- keywords
- RPLC, Alkylphenols, Separation Optimization
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